Exercise 3-2. Cross-Polarization Jamming EXERCISE OBJECTIVE
|
|
- Dominic Waters
- 6 years ago
- Views:
Transcription
1 Exercise 3-2 Cross-Polarization Jamming EXERCISE OBJECTIVE To introduce the concept of antenna polarization. To demonstrate the effect of crosspolarization jamming on a tracking radar s angular error signal. DISCUSSION All electromagnetic signals, be they in the radio, visible, or infrared frequencies of the spectrum, can be regarded as propagating waves consisting of an oscillating electric and magnetic field. The fields oscillate orthogonal to each other, and to their direction of propagation. All antennas can be characterized by their polarization. That is, the direction in which the electric field of the transmitted signal is vibrating, and the direction in which the electric field of a signal must be vibrating to be properly received by the antenna. An antenna s polarization can either be linear, circular, or elliptical, as shown in Figure The name given to the polarization describes the path traced out by the electric field vector in a plane perpendicular to the direction of propagation of the signal. Antenna polarization agility can be used as a method of signal discrimination to protect the radar from the effects of jamming. A cross-polarized signal, a signal whose polarization is orthogonal to that of the antenna s, is greatly attenuated upon reception. Therefore a radar, by controlling the polarization of its antenna, can suppress the effects of the jamming signal. In theory, an infinite amount of suppression can be achieved if the radar is vertically polarized, and the jammer horizontally polarized. Practically, however, antenna design limitations restrict the actual level of suppression to a finite value. 3-25
2 Figure Types of signal polarization. That is to say, distortions in an antenna s polarization make it able to receive crosspolarized signals of very strong levels. The polarization distortion is especially prominent in reflector-type antennas due to the curvature of the reflector. Because the antenna polarization distortion is a design weakness, the antenna s crosspolarized response (called Condon lobes) is considerably different than its normally polarized (co-polarized) response, as is illustrated in Figure 3-11 (a). An antenna s 3-26
3 polarization distortion is caused by several other phenomenon, such as the curvature of the radome (if any), and diffraction of the received signal at the edges of the antenna. As shown in Figure 3-11 (a), the specific level of polarization isolation that an antenna exhibits between a co-polarized signal, and a cross-polarized signal is proportional to the difference between the co-polarized and cross-polarized gains for the signal. Cross-Polarization Jamming The primary use of cross-polarization jamming is as self-protection against a tracking radar, it is not used as a support jammer technique. As stated in this Unit's Discussion of Fundamentals, cross-polarization jamming is a type of defect jamming. It is generally used against monopulse radars that have antennas exhibiting a significant cross-polarized response. As shown in Figure 3-11 (b), cross-polarization jamming exploits the fact that the antenna s response to cross-polarized signals (Condon lobes) drastically changes the relationship between the actual angletracking error, and the angular error signal produced by the radar s tracking servomechanism. Close examination of the co-polarized and cross-polarized difference patterns in Figure 3-11 (b) reveals that they are the inverse of each other (especially around the antenna beam axis). This can be used against monopulse tracking radars to invert the polarity of the angular error signal produced by the tracking mechanism. By transmitting a cross-polarized repeated signal toward a radar antenna, a jammer can create a significant angular tracking offset, on the order of 5 between the antenna boresight and the target s angular position. Once the repeated signal has captured the radar s tracking gates, the polarity of the radar s angular error signal is inverted for small angular tracking errors. The radar responds by rotating the antenna in the wrong direction until the angular error signal takes on a value of zero again, thus causing an angular tracking offset. 3-27
4 Figure Co-polarized and cross-polarized antenna responses and monopulse difference patterns. 3-28
5 For cross-polarization jamming to be effective, the jammer must provide a high jamming-to-signal (J/S) power ratio, it must be high enough to overcome the victim radar antenna s low-response to cross-polarized signals. The orthogonality of the jamming signal to the radar s must also be as perfect as possible. The slightest deviation from true cross-polarization will allow a component of the jamming signal to be received by the radar antenna via its normal polarization. In general, a bit less than 5 from true cross-polarization is all that is required for the jammer signal to become a beacon for target tracking. However, to satisfy these stringent orthogonality requirements a cross-polarization jammer usually uses a configuration of antennas that enable it to produce cross-polarized jamming independent of the angle of the radar and the jammer, as shown in Figure Figure Cross-polarization jammer antenna configuration. Most jammers employ either circularly polarized, or linearly (slant) polarized jamming antennas that inevitably have large cross-polarized components. Radars equipped with an antenna that is susceptible to cross-polarized jamming signals can defeat the signal s effects by replacing the antenna with a phased-array (flat panel) antenna, that in general has a small cross-polarized response, or by using a polarization screen that prevents entry of cross-polarized signals. Many military radars have the ability to change the polarization of their transmitted signal, and are thus able to defeat a cross-polarized jammer by using polarization agility. Cross-Polarization Jamming Against a Sequential-Lobing Tracking Radar Figure 3-13 illustrates the effect which cross-polarization jamming has on a sequential-lobing tracking radar. 3-29
6 Figure Effect of cross-polarization jamming on a sequential-lobing tracking radar. 3-30
7 The upper part of Figure 3-13 shows the normal-polarization response of the radar antenna for the two positions of the main beam. It also shows the cross-polarization response of the radar antenna. As can be seen, the cross-polarization response differs greatly from the normal-polarization response. The main beam in the normalpolarization antenna response is split into two lobes in the cross-polarization antenna response. Furthermore, the amplitude of these lobes (Condon lobes) in the crosspolarization antenna response is much lower ( 24 db in Figure 3-13) than that of the main beam in the normal-polarization antenna response. These differences between the normal-polarization and cross-polarization responses of the radar antenna drastically change the relationship between the actual angular error and the angular error voltage that is produced by the tracking servomechanism, as shown in the lower part of Figure The angular error voltage obtained with a cross-polarized signal is lower than that obtained with a co-polarized signal. Furthermore, the polarity of the angular error voltage is inverted for low angular errors (up to ±5 in Figure 3-13). This is the key difference that allows crosspolarization jamming to produce angular deception in a tracking radar. When a low angular error occurs, the angular tracking servomechanism rotates the antenna in the wrong direction until the angular error voltage is zero again. This creates a significant angular offset (+5 or 5 in Figure 3-13) between the antenna axis direction and the target angular position. Procedure Summary During the first part of the exercise, you will set up and calibrate the Tracking Radar. You will also position the Target Positioning System with respect to the Tracking Radar. In exercise part two, the Radar Jamming Pod Trainer is set up. A noise jamming signal will be directed toward the Tracking Radar with the Radar Jamming Pod Trainer in horizontal (0 ), slanted (45 ), and vertical (90 ) positions. This will allow you to determine the type of polarization used by the Tracking Radar and Radar Jamming Pod Trainer antennas, as well as to demonstrate radar polarization agility as a method to defeat noise jamming. During the third part of the exercise, you will use a co-polarized noise jamming signal to measure and record the amplitude of the Tracking Radar s angular error signal as a function of the actual position of the Radar Jamming Pod Trainer with respect to the radar antenna axis. You will perform the same measurement with a crosspolarized noise jamming signal. You will then use the recorded data to plot curves of the angular error signal amplitude versus the Radar Jamming Pod Trainer position, that illustrate the radar's response to co-polarized and cross-polarized jamming signals. This will allow you to make conclusions as to the reasons why cross-polarized jamming is efficient against tracking radars. In the final part of the exercise, you will demonstrate the effect which crosspolarization jamming has on angular target tracking. 3-31
8 PROCEDURE Setting Up the Tracking Radar G 1. Before beginning this exercise, the main elements of the Tracking Radar Training System (i.e., the antenna and its pedestal, the target table, the RTM and its power supply, the training modules, and the host computer) must be set up as shown in Appendix A. On the Radar Transmitter, make sure that the RF POWER switch is set to the STANDBY position. On the Antenna Controller, make sure that the MANual ANTENNA ROTATION MODE push button is depressed and the SPEED control is set to the 0 position. Turn on all modules and make sure the POWER ON LED's are lit. G 2. Turn on the host computer, start the LVRTS software, select Tracking Radar, and click OK. This begins a new session with all settings set to their default values and with all faults deactivated. If the software is already running, click Exit in the File menu and then restart the LVRTS software to begin a new session. G 3. Connect the modules as shown on the Tracking Radar tab of the LVRTS software. For details of connections to the Reconfigurable Training Module, refer to the RTM Connections tab of the software. Note: Make the connections to the Analog/Digital Output Interface (plug-in module 9632) only if you wish to connect a conventional radar PPI display to the system or obtain an O-scope display on a conventional oscilloscope. Note: The SYNC. TRIGGER INPUT of the Dual-Channel Sampler and the PULSE GENERATOR TRIGGER INPUT of the Radar Transmitter must be connected directly to OUTPUT B of the Radar Synchronizer without passing through BNC T-connectors. Connect the hand control to a USB port of the host computer. G 4. Make the following settings: On the Radar Transmitter RF OSCILLATOR FREQUENCY CAL. PULSE GENERATOR PULSE WIDTH... 1 ns 3-32
9 On the Radar Synchronizer / Antenna Controller PRF Hz PRF MODE SINGLE ANTENNA ROTATION MODE... PRF LOCK. DISPLAY MODE POSITION On the Dual-Channel Sampler RANGE SPAN m In the LVRTS software System Settings: Log./Lin. Mode Lin. Gain as required Radar Display Settings: Range m G 5. Connect the cable of the target table to the connector located on the rear panel of the Target Controller. Make sure that the surface of the target table is free of any objects and then set its POWER switch to the I (on) position. Place the target table so that its grid is located approximately 1.2 m from the Rotating-Antenna Pedestal, as shown in Figure Make sure that the metal rail of the target table is correctly aligned with the shaft of the Rotating-Antenna Pedestal. Figure Position of the Rotating-Antenna Pedestal and target table. 3-33
10 G 6. Calibrate the Tracking Radar Training System according to the instructions in Appendix B. Set the RF POWER switch on the Radar Transmitter to the STANDBY position. Make sure that the Tracking Radar is adjusted as follows: Operating Frequency GHz Pulse-Repetition Frequency single, 288 Hz Pulse Width ns Observation Range m Signal Polarization G 7. Remove the semi-cylinder target, used for the Tracking Radar calibration, from the target table mast. Turn off the target table. Move the metal rail to either end of the target table. The metal rail will not be used during the exercise. Place the Radar Jamming Pod Trainer support (part number ), provided with the Connection Leads and Accessories, onto the target table. Position it so that it is in the center of the target table grid. G 8. Make sure that a 50- load is connected to the Radar Jamming Pod Trainer COMPLEMENTARY RF OUTPUT. Install the Radar Jamming Pod Trainer onto its support (in the horizontal position) using the long support shaft (part number ). Align the Radar Jamming Pod Trainer so that its horn antennas are facing the Tracking Radar antenna and aligned with the shaft of the Rotating- Antenna Pedestal. The longitudinal axis of the Radar Jamming Pod Trainer should be aligned with the shaft of the Rotating-Antenna Pedestal. Rotate the infrared receiver on the Radar Jamming Pod Trainer toward the direction from which you will use the remote controller. Install the Power Supply (Model 9609) of the Radar Jamming Pod Trainer on the shelf located under the surface of the target table. Connect the Power Supply line cord to a wall outlet. Connect the power cable of the Radar Jamming Pod Trainer to the multi-pin connector located on top of the Power Supply. G 9. On the Radar Transmitter, depress the RF POWER push button. The RF POWER ON LED should start to flash on and off. This indicates that RF power is being radiated by the Dual Feed Parabolic Antenna. 3-34
11 In LVRTS, turn off the AGC of the Radar Target Tracker. Turn on the Power Supply of the Radar Jamming Pod Trainer. Turn the Radar Jamming Pod Trainer on. Note that the Radar Jamming Pod Trainer status indicates that the Repeater is on. Adjust the remote controller settings to match the Radar Jamming Pod Trainer status (the Repeater is on, all else is off). G 10. Make sure the radar antenna axis is aligned with the Radar Jamming Pod Trainer. This can be done by observing the O-Scope Display of the Tracking Radar while adjusting the radar antenna orientation so that the amplitude of the Radar Jamming Pod Trainer's repeated echo signal is the same for both positions of the antenna main beam. G 11. Observing the O-Scope Display, set the Gain of the MTI Processor so that the amplitude of the Radar Jamming Pod Trainer's repeated echo signal is approximately 0.25 V. G 12. Using the remote controller, make the following adjustments to the Radar Jamming Pod Trainer: Noise On Frequency GHz Frequency Bandwidth GHz Frequency Modulation Triangle Attenuation db Attenuation db AM/Blinking Off Repeater Off RGPO Off False Targets (FT) Off The Radar Jamming Pod Trainer is now transmitting a spot noise jamming signal toward the radar antenna. G 13. Adjust the Radar Jamming Pod Trainer Noise Attenuation so that the average amplitude of the noise spikes on the O-Scope Display is approximately 0.25 V. Figure 3-15 is an example of what you should observe on the O-Scope Display once the Attenuation is adjusted. Note: Add persistence to the O-Scope Display while doing this adjustment. 3-35
12 Figure Setting the average amplitude of the noise spikes on the O-Scope Display to approximately 0.25 V. G 14. Loosen the securing device found on the Radar Jamming Pod Trainer underside and rotate the Radar Jamming Pod Trainer into a slanted position of approximately 45, while observing the noise on the O-Scope Display. Tighten the securing device. How does this affect the jamming induced noise? G 15. Loosen, once again, the securing device found on the Radar Jamming Pod Trainer underside and rotate the Radar Jamming Pod Trainer to a vertical position (90 ), while observing the noise on the O-Scope Display. Tighten the securing device. How does this affect the jamming induced noise? 3-36
13 Briefly explain what type of polarization is used by the Radar Jamming Pod Trainer and Tracking Radar antennas, to account for the noise levels observed. Comparison Between the Effect of Cross-Polarized and Co-polarized Jamming G 16. Return the Radar Jamming Pod Trainer to the co-polarized jamming orientation. That is, loosen once again, the securing device found on the Radar Jamming Pod Trainer underside, and rotate the Radar Jamming Pod Trainer to a horizontal position (0 ). Tighten the securing device. G 17. Align the Radar Jamming Pod Trainer horn antennas with the shaft of the Rotating-Antenna Pedestal. The longitudinal axis of the Radar Jamming Pod Trainer should be aligned with the shaft of the Rotating-Antenna Pedestal. Align the radar antenna axis with the Radar Jamming Pod Trainer horn antennas. G 18. On the Radar Transmitter, disconnect the BNC-connector cable from the TRIGGER INPUT of the PULSE GENERATOR. This disables pulse transmission at the Tracking Radar, however reception is maintained. This is done so that the amplitude measurements of the radar s angular error signal, taken later on, will be due to the jamming signal only. The effects of radar clutter are thus eliminated from the measurements. G 19. In LVRTS, disconnect Oscilloscope probes 1 and 2 from TP1 and TP2 of the MTI Processor. Connect Oscilloscope probe 1 to TP27 of the Radar Target Tracker. Make the following settings on the Oscilloscope: Channel V/div Channel Off Time Base ms/div Set the Oscilloscope to Continuous Refresh. The Oscilloscope is now set to display the angular error signal (TP27) produced by the Tracking Radar servomechanism (see Figure 3-16). The amount by which the radar antenna turns to track a target is proportional to the angular error signal voltage. 3-37
14 Notice that the average value (AVG) of the voltage at TP27 (angular error signal voltage) is indicated in the Waveform Data section of the Oscilloscope (see Figure 3-16). This value should fluctuate. Figure Angular error signal (TP27) produced by the Tracking Radar servomechanism. G 20. Familiarize yourself with Table 3-1. This table will be used to record the amplitude of the Tracking Radar s angular error signal maxima, and when it has the value of zero. That is, you will record the average value of the voltage at TP27 (angular error signal voltage), and the Radar Jamming Pod Trainer s X-axis position only when the voltage at TP27 is at a maximum or at a value of zero. In this manner, it will be possible to plot, in Figure 3-17, rough curves of the angular error signal voltage versus the position of the Radar Jamming Pod Trainer, that illustrate the Tracking Radar's response to co-polarized and cross-polarized jamming signals. 3-38
15 NOISE JAMMING POLARIZATION Radar Jamming Pod Trainer X-AXIS POSITION (cm) AVERAGE VALUE OF VOLTAGE AT TP27 (V) Cross-Polarized Co-Polarized Table 3-1. Average value of the voltage at TP27 (angular error signal voltage) as a function of the Radar Jamming Pod Trainer's X-axis position and jamming signal polarization. G 21. Begin the co-polarized noise jamming measurements. While observing the signal at TP27 on the Oscilloscope, slightly slide the Radar Jamming Pod Trainer along the X-axis of the target table so that the average value of the voltage at TP27 is approximately 0.00 V. While sliding the Radar Jamming Pod Trainer, attempt to maintain its target table Y-axis position at 45.0 cm, and the pointing direction of its horn antennas. When the signal at TP27 becomes approximately equal to zero, the transmit horn antenna of the Radar Jamming Pod Trainer should be aligned with the radar antenna axis. Record the average value of the voltage at TP27 and the Radar Jamming Pod Trainer s X-axis position in the first co-polarized row of Table 3-1. G 22. Once again, slide the Radar Jamming Pod Trainer along the X-axis in the direction of increasing values. Stop the displacement when the signal at TP27, being observed on the Oscilloscope, is maximum and has a positive polarity. 3-39
16 Record the average value of the voltage at TP27 and the Radar Jamming Pod Trainer s X-axis position in the second co-polarized row of Table 3-1. G 23. Continue sliding the Radar Jamming Pod Trainer along the X-axis in the direction of increasing values. Stop the displacement when the signal at TP27, being observed on the Oscilloscope, has returned to a value of approximately 0.00 V. Record the average value of the voltage at TP27 and the Radar Jamming Pod Trainer s X-axis position in the third co-polarized row of Table 3-1. G 24. Slide the Radar Jamming Pod Trainer along the X-axis, in the direction of decreasing values. Stop the displacement when the signal at TP27, being observed on the Oscilloscope, is maximum once again and has a negative polarity (you will pass through a positive maximum and a zero before reaching the negative maximum). Record the average value of the voltage at TP27 and the Radar Jamming Pod Trainer s X-axis position in the fourth co-polarized row of Table 3-1. G 25. Continue sliding the Radar Jamming Pod Trainer along the X-axis, in the direction of decreasing values. Stop the displacement when the voltage at TP27 has once again returned to a value of approximately 0.00 V. Record the average value of the voltage at TP27 and the Radar Jamming Pod Trainer s X-axis position in the fifth and final co-polarized row of Table 3-1. G 26. Adjust the Radar Jamming Pod Trainer orientation so as to transmit a crosspolarized noise jamming signal toward the Tracking Radar. That is, loosen the securing device found on the Radar Jamming Pod Trainer underside and rotate the Radar Jamming Pod Trainer to a vertical position (90 ). Tighten the securing device. G 27. Using the remote controller, decrease the Radar Jamming Pod Trainer s Noise Attenuation to 0 db. This adjustment will enable the cross-polarized noise jamming signal to penetrate the radar receiver system. Slowly slide the Radar Jamming Pod Trainer along the X-axis of the target positioning table so that it is aligned with the shaft of the Rotating-Antenna Pedestal. While sliding the Radar Jamming Pod Trainer, attempt to maintain its target table Y-axis position at 45.0 cm, and the pointing direction of its horn antennas. The voltage at TP27 should be approximately 0.00 V. G 28. Begin the cross-polarized noise jamming measurements. While the Tracking Radar's angular error response to a co-polarized jamming signal only had one positive-polarity maximum, one negative- 3-40
17 polarity maximum, and three zeroes (five measurements in all), the Tracking Radar's angular error response to a cross-polarized jamming signal has two positive-polarity maxima, two negative-polarity maxima, and 5 zeroes (nine measurements in all). To make the cross-polarized noise jamming measurements, use a procedure similar to the one outlined in procedure steps 21 to 25 for the co-polarized noise jamming measurements. That is: I. Slightly slide the Radar Jamming Pod Trainer along the X-axis of the target positioning table to find the central zero, record the average value of the voltage at TP27, and the Radar Jamming Pod Trainer's X-axis position. II. Slowly slide the Radar Jamming Pod Trainer along the X-axis, in the direction of increasing values until you locate a negative-polarity maximum, a zero, a positive-polarity maximum, and another zero. Record your measurements. Note: Change the sensitivity setting as required on the Oscilloscope. III. Slowly slide the Radar Jamming Pod Trainer along the X-axis, in the direction of decreasing values to replace the Radar Jamming Pod Trainer to the central zero position found in step I. IV. Slowly slide the Radar Jamming Pod Trainer along the X-axis, in the direction of decreasing values until you locate a positive-polarity maximum, a zero, a negative-polarity maximum, and another zero. Record your measurements. Note: If the Tracking Radar's angular error response to the crosspolarized noise jamming signal is not as expected, carefully readjust the Radar Jamming Pod Trainer orientation so that it is as near as possible to perfect orthogonality, then redo the measurements. G 29. Using the data recorded to Table 3-1, plot the Tracking Radar's angular error response curves to the co-polarized and cross-polarized noise jamming signals in Figure Label the curves as the "radar's angular error response to co-polarized signals" and the "radar's angular error response to cross-polarized signals". 3-41
18 Figure Amplitude of the radar angular error signal (TP27) as a function of the Radar Jamming Pod Trainer's X-axis position for co-polarized and cross-polarized jamming signals. 3-42
19 Note that the response curves which you plot in Figure 3-17 have significant differences between each other. Briefly describe the implications that this dissimilarity has on angular tracking when the radar is confronted with cross-polarized jamming. Cross-Polarization Jamming Demonstrated G 30. Slowly slide the Radar Jamming Pod Trainer along the X-axis, in the direction of increasing values to replace the Radar Jamming Pod Trainer to the central zero position found previously. The radar antenna axis should be aligned with the Radar Jamming Pod Trainer and the voltage at TP27 should be approximately 0.00 V. G 31. Enable the Tracking Radar s track-on-jamming mode by performing the following manipulations: I. Make certain that on the Radar Transmitter, the BNC-connector cable is disconnected from the TRIGGER INPUT of the PULSE GENERATOR. Thus radar pulse transmission is disabled, but reception is maintained. II. In LVRTS, set the Range Lock Disable to On. This disables automatic range tracking. III. Lock the Tracking Radar onto the cross-polarized noise jamming signal produced by the Radar Jamming Pod Trainer while observing the radar antenna. The radar locks onto the noise jamming signal but the antenna axis should be deflected away from the Radar Jamming Pod Trainer. This angular deception is due to the cross-polarized noise jamming signal. Note: If the radar antenna is still correctly aligned once the Tracking Radar is locked onto the jamming signal, slightly move the Radar Jamming Pod Trainer along the X-axis to create a small angular error. This should cause the radar antenna to move in the opposite direction, thereby producing an angular offset of a few degrees between the Radar Jamming Pod Trainer and the antenna axis direction. G 32. Make sure the DISPLAY MODE on the Antenna Controller is set to POSITION. This setting will permit you to quantitatively verify the extent of any jamming induced angle tracking errors. 3-43
20 What is the angular position of the radar antenna axis ( ANT. ) as indicated on the Antenna Controller? ANT. = G 33. Unlock the Tracking Radar and align the antenna axis with the Radar Jamming Pod Trainer. What is the actual angular position of the Radar Jamming Pod Trainer ( POD ) as indicated on the Antenna Controller? POD = What is the value of the angular error ( MEASURED ) induced by crosspolarization jamming? MEASURED = POD - ANT = G 34. Note that in Figure 3-17, the cross-polarized angular error response has zeroes on each side of the central zero. Note that the slope of the curve at the first zero on each side (side zero) of the central zero is of the correct sign for angular tracking. What is the average distance ( X) between each side zero and the central zero? X = cm Knowing that the Radar Jamming Pod Trainer is at a range R ( 1.25 m) from the radar antenna, calculate the angular difference ( CALCULATED ) corresponding to the average distance ( X) between the central zero and the side zeroes in the Tracking Radar's angular error response to crosspolarized signals, as illustrated in Figure CALCULATED = = 3-44
21 Figure Calculating the angular error induced by cross-polarization jamming. 3-45
22 G 35. Compare MEASURED and CALCULATED. Briefly explain what this implies about a radar s angular tracking when confronted by a cross-polarization jamming signal. G 36. Turn off the Tracking Radar and the Radar Jamming Pod Trainer. Disconnect all cables and remove all accessories. CONCLUSION In this exercise, you demonstrated that radar polarization agility is an effective electronic protection against jamming. However, you showed that if the radar antenna has a relatively high response to signals with a cross-polarized component, then it is vulnerable to cross-polarization jamming. Reflector-type antennas, such as the parabolic antenna, are especially vulnerable to this type of jamming. You showed that the angular error response of a radar to cross-polarized signals is significantly different than its response to co-polarized signals. This was done by measuring the amplitude of the Tracking Radar s angular error signal for different positions of the Radar Jamming Pod Trainer, transmitting either a co-polarized or a cross-polarized jamming signal. You demonstrated that when cross-polarization jamming is effective against a tracking radar, it creates a significant angular tracking offset. REVIEW QUESTIONS 1. Briefly describe the concept of polarization. 3-46
23 2. Briefly describe the electronic attack known as cross-polarization jamming. 3. What is radar polarization agility? 4. Does cross-polarization jamming target a specific radar design weakness or a fundamental weakness in all radars? Briefly explain. 5. Could cross-polarization jamming be effectively conducted through the sidelobes of a radar antenna? Briefly explain. 3-47
Exercise 3-3. Multiple-Source Jamming Techniques EXERCISE OBJECTIVE
Exercise 3-3 Multiple-Source Jamming Techniques EXERCISE OBJECTIVE To introduce multiple-source jamming techniques. To differentiate between incoherent multiple-source jamming (cooperative jamming), and
More informationDeceptive Jamming Using Amplitude-Modulated Signals
Exercise 3-1 Deceptive Jamming Using Amplitude-Modulated Signals EXERCISE OBJECTIVE To demonstrate the effect of AM noise and repeater inverse gain jamming, two angular deceptive EA used against sequential
More informationFrequency Agility and Barrage Noise Jamming
Exercise 1-3 Frequency Agility and Barrage Noise Jamming EXERCISE OBJECTIVE To demonstrate frequency agility, a radar electronic protection is used against spot noise jamming. To justify the use of barrage
More informationExercise 1-5. Antennas in EW: Sidelobe Jamming and Space Discrimination EXERCISE OBJECTIVE
Exercise 1-5 Antennas in EW: Sidelobe Jamming EXERCISE OBJECTIVE To demonstrate that noise jamming can be injected into a radar receiver via the sidelobes of the radar antenna. To outline the effects of
More informationExercise 4. Angle Tracking Techniques EXERCISE OBJECTIVE
Exercise 4 Angle Tracking Techniques EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the principles of the following angle tracking techniques: lobe switching, conical
More informationExercise 6. Range and Angle Tracking Performance (Radar-Dependent Errors) EXERCISE OBJECTIVE
Exercise 6 Range and Angle Tracking Performance EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the radardependent sources of error which limit range and angle tracking
More informationExercise 8. Troubleshooting a Radar Target Tracker EXERCISE OBJECTIVE
Exercise 8 Troubleshooting a Radar Target Tracker EXERCISE OBJECTIVE When you have completed this exercise, you will be able to apply an efficient troubleshooting procedure in order to locate instructor-inserted
More informationExercise 4-1. Chaff Clouds EXERCISE OBJECTIVE
Exercise 4-1 Chaff Clouds EXERCISE OBJECTIVE To demonstrate chaff as a method of denying target information to a radar. To verify whether MTI processing is an effective anti-chaff processing technique
More informationStealth Technology: The Quest for Reduced RCS
Exercise 2-3 Stealth Technology: The Quest for Reduced RCS EXERCISE OBJECTIVE To introduce the basic material and design principles associated with radar stealth technology. To use these principles to
More informationExercise 1-3. Radar Antennas EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION OF FUNDAMENTALS. Antenna types
Exercise 1-3 Radar Antennas EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the role of the antenna in a radar system. You will also be familiar with the intrinsic characteristics
More informationExercise 2-6. Target Bearing Estimation EXERCISE OBJECTIVE
Exercise 2-6 EXERCISE OBJECTIVE When you have completed this exercise, you will be able to evaluate the position of the target relative to a selected beam using the A-scope display. You will be able to
More informationThe Discussion of this exercise covers the following points:
Exercise 3-2 Frequency-Modulated CW Radar EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with FM ranging using frequency-modulated continuous-wave (FM-CW) radar. DISCUSSION
More informationExercise 1-4. The Radar Equation EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION OF FUNDAMENTALS
Exercise 1-4 The Radar Equation EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the different parameters in the radar equation, and with the interaction between these
More informationExercise 2-1. Beamwidth Measurement EXERCISE OBJECTIVE
Exercise 2-1 Beamwidth Measurement EXERCISE OBJECTIVE When you have completed this exercise, you will be able to evaluate the -3 db beamwidth of the Phased Array Antenna. You will use a reference cylindrical
More informationThe Discussion of this exercise covers the following points: Filtering Aperture distortion
Exercise 3-1 PAM Signals Demodulation EXERCISE OBJECTIVE When you have completed this exercise you will be able to demonstrate the recovery of the original message signal from a PAM signal using the PAM
More informationCourseware Sample F0
Telecommunications Radar Courseware Sample 28923-F0 TELECOMMUNICATIONS RADAR COURSEWARE SAMPLE by the Staff of Lab-Volt (Quebec) Ltd Copyright 2001 Lab-Volt Ltd All rights reserved. No part of this publication
More informationRadar Training System ( )
Radar Training System 593353 (8096-00) LabVolt Series Datasheet Festo Didactic en 120 V - 60 Hz 01/2019 Table of Contents General Description 2 Topic Coverage 2 Features & Benefits 2 List of Available
More informationExercise 2-1. PAM Signals EXERCISE OBJECTIVE DISCUSSION OUTLINE. Signal sampling DISCUSSION
Exercise 2-1 PAM Signals EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the generation of both natural and flat-top sampled PAM signals. You will verify how the frequency
More informationExercise 2-2. Spectral Characteristics of PAM Signals EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Sampling
Exercise 2-2 Spectral Characteristics of PAM Signals EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the spectral characteristics of PAM signals. You will be able to
More informationRadar Training System
Radar Training System LabVolt Series Datasheet Festo Didactic en 120 V - 60 Hz 06/2018 Table of Contents General Description 2 Topic Coverage 2 Features & Benefits 2 List of Available Training Systems
More informationExercise 2-2. Antenna Driving System EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION
Exercise 2-2 Antenna Driving System EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the mechanical aspects and control of a rotating or scanning radar antenna. DISCUSSION
More informationDepartment of Electrical and Computer Engineering. Laboratory Experiment 1. Function Generator and Oscilloscope
Department of Electrical and Computer Engineering Laboratory Experiment 1 Function Generator and Oscilloscope The purpose of this first laboratory assignment is to acquaint you with the function generator
More information2 Oscilloscope Familiarization
Lab 2 Oscilloscope Familiarization What You Need To Know: Voltages and currents in an electronic circuit as in a CD player, mobile phone or TV set vary in time. Throughout the course you will investigate
More informationINTRODUCTION. Basic operating principle Tracking radars Techniques of target detection Examples of monopulse radar systems
Tracking Radar H.P INTRODUCTION Basic operating principle Tracking radars Techniques of target detection Examples of monopulse radar systems 2 RADAR FUNCTIONS NORMAL RADAR FUNCTIONS 1. Range (from pulse
More informationUsing Frequency Diversity to Improve Measurement Speed Roger Dygert MI Technologies, 1125 Satellite Blvd., Suite 100 Suwanee, GA 30024
Using Frequency Diversity to Improve Measurement Speed Roger Dygert MI Technologies, 1125 Satellite Blvd., Suite 1 Suwanee, GA 324 ABSTRACT Conventional antenna measurement systems use a multiplexer or
More informationExercise 2. The Buck Chopper EXERCISE OBJECTIVE DISCUSSION OUTLINE. The buck chopper DISCUSSION
Exercise 2 The Buck Chopper EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the operation of the buck chopper. DISCUSSION OUTLINE The Discussion of this exercise covers
More informationPolarization. Contents. Polarization. Types of Polarization
Contents By Kamran Ahmed Lecture # 7 Antenna polarization of satellite signals Cross polarization discrimination Ionospheric depolarization, rain & ice depolarization The polarization of an electromagnetic
More informationKULLIYYAH OF ENGINEERING
KULLIYYAH OF ENGINEERING DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING ANTENNA AND WAVE PROPAGATION LABORATORY (ECE 4103) EXPERIMENT NO 3 RADIATION PATTERN AND GAIN CHARACTERISTICS OF THE DISH (PARABOLIC)
More informationExercise 3. Differential QAM (DQAM) EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Review of phase ambiguity
Exercise 3 Differential QAM (DQAM) EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the use of differential encoding, using the ITU-T V.22 bis recommendation, to overcome
More informationExercise 8. The Four-Quadrant Chopper EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. The Four-Quadrant Chopper
Exercise 8 The Four-Quadrant Chopper EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the operation of the four-quadrant chopper. DISCUSSION OUTLINE The Discussion of
More informationExercise 6. The Boost Chopper EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. The boost chopper
Exercise 6 The Boost Chopper EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the operation of the boost chopper. DISCUSSION OUTLINE The Discussion of this exercise covers
More informationP a g e 1 ST985. TDR Cable Analyzer Instruction Manual. Analog Arts Inc.
P a g e 1 ST985 TDR Cable Analyzer Instruction Manual Analog Arts Inc. www.analogarts.com P a g e 2 Contents Software Installation... 4 Specifications... 4 Handling Precautions... 4 Operation Instruction...
More informationOscilloscope Measurements
PC1143 Physics III Oscilloscope Measurements 1 Purpose Investigate the fundamental principles and practical operation of the oscilloscope using signals from a signal generator. Measure sine and other waveform
More informationTelecommunications Radar Courseware Sample
Telecommunications Radar Courseware Sample 38542-F0 Order no.: 38542-00 First Edition Revision level: 08/2015 By the staff of Festo Didactic Festo Didactic Ltée/Ltd, Quebec, Canada 2006 Internet: www.festo-didactic.com
More informationNotes on Experiment #1
Notes on Experiment #1 Bring graph paper (cm cm is best) From this week on, be sure to print a copy of each experiment and bring it with you to lab. There will not be any experiment copies available in
More informationHarmonic Reduction using Thyristor 12-Pulse Converters
Exercise 5 Harmonic Reduction using Thyristor 12-Pulse Converters EXERCISE OBJECTIVE When you have completed this exercise, you will understand what a thyristor 12- pulse converter is and how it operates.
More information1 SINGLE TGT TRACKER (STT) TRACKS A SINGLE TGT AT FAST DATA RATE. DATA RATE 10 OBS/SEC. EMPLOYS A CLOSED LOOP SERVO SYSTEM TO KEEP THE ERROR SIGNAL
TRACKING RADARS 1 SINGLE TGT TRACKER (STT) TRACKS A SINGLE TGT AT FAST DATA RATE. DATA RATE 10 OBS/SEC. EMPLOYS A CLOSED LOOP SERVO SYSTEM TO KEEP THE ERROR SIGNAL SMALL. APPLICATION TRACKING OF AIRCRAFT/
More informationOptical Pumping Control Unit
(Advanced) Experimental Physics V85.0112/G85.2075 Optical Pumping Control Unit Fall, 2012 10/16/2012 Introduction This document is gives an overview of the optical pumping control unit. Magnetic Fields
More informationThe Single-Phase PWM Inverter with Dual-Polarity DC Bus
Exercise 2 The Single-Phase PWM Inverter with Dual-Polarity DC Bus EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the singlephase PWM inverter with dual-polarity dc
More informationIntroduction to Radar Systems. Radar Antennas. MIT Lincoln Laboratory. Radar Antennas - 1 PRH 6/18/02
Introduction to Radar Systems Radar Antennas Radar Antennas - 1 Disclaimer of Endorsement and Liability The video courseware and accompanying viewgraphs presented on this server were prepared as an account
More informationExperiment 1: Instrument Familiarization (8/28/06)
Electrical Measurement Issues Experiment 1: Instrument Familiarization (8/28/06) Electrical measurements are only as meaningful as the quality of the measurement techniques and the instrumentation applied
More informationRadiation characteristics of an array of two dipole antennas
Department of Electrical and Electronic Engineering (EEE), Bangladesh University of Engineering and Technology (BUET). EEE 434: Microwave Engineering Laboratory Experiment No.: A2 Radiation characteristics
More informationGrid-Tied Home Energy Production Using a Solar or Wind Power Inverter without DC-to-DC Converter
Exercise 3 Grid-Tied Home Energy Production Using a Solar or Wind Power Inverter without DC-to-DC Converter EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with grid-tied
More informationExperiment 1: Instrument Familiarization
Electrical Measurement Issues Experiment 1: Instrument Familiarization Electrical measurements are only as meaningful as the quality of the measurement techniques and the instrumentation applied to the
More informationExercise 3-3. Differential Encoding EXERCISE OBJECTIVE DISCUSSION OUTLINE. Phase ambiguity DISCUSSION
Exercise 3-3 Differential Encoding EXERCISE OBJECTIVE When you have completed this exercise, you will e familiar with the technique of differential encoding used with QPSK digital modulation. DISCUSSION
More informationMAKING TRANSIENT ANTENNA MEASUREMENTS
MAKING TRANSIENT ANTENNA MEASUREMENTS Roger Dygert, Steven R. Nichols MI Technologies, 1125 Satellite Boulevard, Suite 100 Suwanee, GA 30024-4629 ABSTRACT In addition to steady state performance, antennas
More informationPart 1: Standing Waves - Measuring Wavelengths
Experiment 7 The Microwave experiment Aim: This experiment uses microwaves in order to demonstrate the formation of standing waves, verifying the wavelength λ of the microwaves as well as diffraction from
More informationessential requirements is to achieve very high cross-polarization discrimination over a
INTRODUCTION CHAPTER-1 1.1 BACKGROUND The antennas used for specific applications in satellite communications, remote sensing, radar and radio astronomy have several special requirements. One of the essential
More informationExercise 3-2. Digital Modulation EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. PSK digital modulation
Exercise 3-2 Digital Modulation EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with PSK digital modulation and with a typical QPSK modulator and demodulator. DISCUSSION
More informationYou will need the following pieces of equipment to complete this experiment: Wilkinson power divider (3-port board with oval-shaped trace on it)
UNIVERSITY OF TORONTO FACULTY OF APPLIED SCIENCE AND ENGINEERING The Edward S. Rogers Sr. Department of Electrical and Computer Engineering ECE422H1S: RADIO AND MICROWAVE WIRELESS SYSTEMS EXPERIMENT 1:
More informationLab 6 Instrument Familiarization
Lab 6 Instrument Familiarization What You Need To Know: Voltages and currents in an electronic circuit as in a CD player, mobile phone or TV set vary in time. Throughout todays lab you will investigate
More informationBe aware that there is no universal notation for the various quantities.
Fourier Optics v2.4 Ray tracing is limited in its ability to describe optics because it ignores the wave properties of light. Diffraction is needed to explain image spatial resolution and contrast and
More informationPGT313 Digital Communication Technology. Lab 3. Quadrature Phase Shift Keying (QPSK) and 8-Phase Shift Keying (8-PSK)
PGT313 Digital Communication Technology Lab 3 Quadrature Phase Shift Keying (QPSK) and 8-Phase Shift Keying (8-PSK) Objectives i) To study the digitally modulated quadrature phase shift keying (QPSK) and
More informationB. Equipment. Advanced Lab
Advanced Lab Measuring Periodic Signals Using a Digital Oscilloscope A. Introduction and Background We will use a digital oscilloscope to characterize several different periodic voltage signals. We will
More informationPractical Antennas and. Tuesday, March 4, 14
Practical Antennas and Transmission Lines Goals Antennas are the interface between guided waves (from a cable) and unguided waves (in space). To understand the various properties of antennas, so as to
More informationPhased Array Polarization Switches
APPLICATION NOTE March 2003 Page 1 of 9 Application Note POL-1 Phased Array Polarization Switches PREPARED BY: EMS TECHNOLOGIES, INC. SPACE AND TECHNOLOGY - ATLANTA 660 ENGINEERING DRIVE P.O. BOX 7700
More informationCAVITY TUNING. July written by Gary Moore Telewave, Inc. 660 Giguere Court, San Jose, CA Phone:
CAVITY TUNING July 2017 -written by Gary Moore Telewave, Inc 660 Giguere Court, San Jose, CA 95133 Phone: 408-929-4400 1 P a g e Introduction Resonant coaxial cavities are the building blocks of modern
More informationWPE 48N USER MANUAL Version1.1
Version1.1 Security instructions 1. Read this manual carefully. 2. Follow all instructions and warnings. 3. Only use accessories specified by WORK PRO. 4. Follow the safety instructions of your country.
More informationPMSM Control Using a Three-Phase, Six-Step 120 Modulation Inverter
Exercise 1 PMSM Control Using a Three-Phase, Six-Step 120 Modulation Inverter EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with six-step 120 modulation. You will know
More informationOscilloscope. 1 Introduction
Oscilloscope Equipment: Capstone, BK Precision model 2120B oscilloscope, Wavetek FG3C function generator, 2-3 foot coax cable with male BNC connectors, 2 voltage sensors, 2 BNC banana female adapters,
More informationCHAPTER 6. Motor Driver
CHAPTER 6 Motor Driver In this lab, we will construct the circuitry that your robot uses to drive its motors. However, before testing the motor circuit we will begin by making sure that you are able to
More informationSwitched Mode Power Supply Measurements
Power Analysis 1 Switched Mode Power Supply Measurements AC Input Power measurements Safe operating area Harmonics and compliance Efficiency Switching Transistor Losses Measurement challenges Transformer
More informationCombinational logic: Breadboard adders
! ENEE 245: Digital Circuits & Systems Lab Lab 1 Combinational logic: Breadboard adders ENEE 245: Digital Circuits and Systems Laboratory Lab 1 Objectives The objectives of this laboratory are the following:
More informationOscilloscope and Function Generators
MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY, JAMSHORO DEPARTMENT OF ELECTRONIC ENGINEERING ELECTRONIC WORKSHOP # 02 Oscilloscope and Function Generators Roll. No: Checked by: Date: Grade: Object: To
More informationThe Oscilloscope. Vision is the art of seeing things invisible. J. Swift ( ) OBJECTIVE To learn to operate a digital oscilloscope.
The Oscilloscope Vision is the art of seeing things invisible. J. Swift (1667-1745) OBJECTIVE To learn to operate a digital oscilloscope. THEORY The oscilloscope, or scope for short, is a device for drawing
More informationPXA Configuration. Frequency range
Keysight Technologies Making Wideband Measurements Using the Keysight PXA Signal Analyzer as a Down Converter with Infiniium Oscilloscopes and 89600 VSA Software Application Note Introduction Many applications
More informationEMG4066:Antennas and Propagation Exp 1:ANTENNAS MMU:FOE. To study the radiation pattern characteristics of various types of antennas.
OBJECTIVES To study the radiation pattern characteristics of various types of antennas. APPARATUS Microwave Source Rotating Antenna Platform Measurement Interface Transmitting Horn Antenna Dipole and Yagi
More informationNow we re going to put all that knowledge to the test and apply your cyber skills in a wireless environment.
We are devoting a good portion of this course to learning about wireless communications systems and the associated considerations, from modulation to gain to antennas and signal propagation. Why? Because
More informationREPORT ITU-R BO Multiple-feed BSS receiving antennas
Rep. ITU-R BO.2102 1 REPORT ITU-R BO.2102 Multiple-feed BSS receiving antennas (2007) 1 Introduction This Report addresses technical and performance issues associated with the design of multiple-feed BSS
More informationNewsletter 4.4. Antenna Magus version 4.4 released! Array synthesis reflective ground plane addition. July 2013
Newsletter 4.4 July 2013 Antenna Magus version 4.4 released! We are pleased to announce the new release of Antenna Magus Version 4.4. This release sees the addition of 5 new antennas: Horn-fed truncated
More informationLecture 3 SIGNAL PROCESSING
Lecture 3 SIGNAL PROCESSING Pulse Width t Pulse Train Spectrum of Pulse Train Spacing between Spectral Lines =PRF -1/t 1/t -PRF/2 PRF/2 Maximum Doppler shift giving unambiguous results should be with in
More informationEE 201 Function / Arbitrary Waveform Generator and Oscilloscope Tutorial
EE 201 Function / Arbitrary Waveform Generator and Oscilloscope Tutorial 1 This is a programmed learning instruction manual. It is written for the Agilent DSO3202A Digital Storage Oscilloscope. The prerequisite
More informationLab 12 Microwave Optics.
b Lab 12 Microwave Optics. CAUTION: The output power of the microwave transmitter is well below standard safety levels. Nevertheless, do not look directly into the microwave horn at close range when the
More informationThe University of Jordan Mechatronics Engineering Department Electronics Lab.( ) Experiment 1: Lab Equipment Familiarization
The University of Jordan Mechatronics Engineering Department Electronics Lab.(0908322) Experiment 1: Lab Equipment Familiarization Objectives To be familiar with the main blocks of the oscilloscope and
More informationSonoma State University Department of Engineering Science Spring 2017
EE 110 Introduction to Engineering & Laboratory Experience Saeid Rahimi, Ph.D. Lab 4 Introduction to AC Measurements (I) AC signals, Function Generators and Oscilloscopes Function Generator (AC) Battery
More informationExercise 1-4. Pulse Dialing
Exercise 1-4 Pulse Dialing When you have completed this exercise, you will be able to demonstrate pulse dialing, an older signaling technique to transmit telephone numbers to central offices using a series
More informationEENG-201 Experiment # 4: Function Generator, Oscilloscope
EENG-201 Experiment # 4: Function Generator, Oscilloscope I. Objectives Upon completion of this experiment, the student should be able to 1. To become familiar with the use of a function generator. 2.
More informationFluke 192/196/199. MS 190 and MA 190. Users Manual Supplement
Fluke 192/196/199 MS 190 and MA 190 Users Manual Supplement 4822 872 00979 April 2000, Rev.2, 9/00 2000 Fluke Corporation. All rights reserved. Printed in the Netherlands. All product names are trademarks
More informationElectromagnetic Effects, original release, dated 31 October Contents: 17 page document plus 13 Figures. Enclosure (1)
Electromagnetic Effects, original release, dated 31 October 2005 Contents: 17 page document plus 13 Figures Enclosure (1) Electromagnetic effects. 1. Purpose. To ensure that the addition of fiber optic
More informationLab 2b: Dynamic Response of a Rotor with Shaft Imbalance
Lab 2b: Dynamic Response of a Rotor with Shaft Imbalance OBJECTIVE: To calibrate an induction position/displacement sensor using a micrometer To calculate and measure the natural frequency of a simply-supported
More informationSampling and Reconstruction
Experiment 10 Sampling and Reconstruction In this experiment we shall learn how an analog signal can be sampled in the time domain and then how the same samples can be used to reconstruct the original
More informationUCE-DSO210 DIGITAL OSCILLOSCOPE USER MANUAL. FATIH GENÇ UCORE ELECTRONICS REV1
UCE-DSO210 DIGITAL OSCILLOSCOPE USER MANUAL FATIH GENÇ UCORE ELECTRONICS www.ucore-electronics.com 2017 - REV1 Contents 1. Introduction... 2 2. Turn on or turn off... 3 3. Oscilloscope Mode... 3 3.1. Display
More informationAntenna Engineering Lecture 3: Basic Antenna Parameters
Antenna Engineering Lecture 3: Basic Antenna Parameters ELC 405a Fall 2011 Department of Electronics and Communications Engineering Faculty of Engineering Cairo University 2 Outline 1 Radiation Pattern
More information10 GHz Microwave Link
10 GHz Microwave Link Project Project Objectives System System Functionality Testing Testing Procedures Cautions and Warnings Problems Encountered Recommendations Conclusion PROJECT OBJECTIVES Implement
More informationLAB I. INTRODUCTION TO LAB EQUIPMENT
1. OBJECTIVE LAB I. INTRODUCTION TO LAB EQUIPMENT In this lab you will learn how to properly operate the oscilloscope Agilent MSO6032A, the Keithley Source Measure Unit (SMU) 2430, the function generator
More informationMICROWAVE OPTICS. Instruction Manual and Experiment Guide for the PASCO scientific Model WA-9314B G
Includes Teacher's Notes and Typical Experiment Results Instruction Manual and Experiment Guide for the PASCO scientific Model WA-9314B 012-04630G MICROWAVE OPTICS 10101 Foothills Blvd. Roseville, CA 95678-9011
More informationCONNECTING THE PROBE TO THE TEST INSTRUMENT
2SHUDWLRQ 2SHUDWLRQ Caution The input circuits in the AP034 Active Differential Probe incorporate components that protect the probe from damage resulting from electrostatic discharge (ESD). Keep in mind
More informationHow to Setup and Use an Oscilloscope
How to Setup and Use an Oscilloscope An oscilloscope is a device that is used to measure voltage with respect to time. Oscilloscopes are essential pieces of test equipment used in the development and testing
More informationIntroduction to Lab Instruments
ECE316, Experiment 00, 2017 Communications Lab, University of Toronto Introduction to Lab Instruments Bruno Korst - bkf@comm.utoronto.ca Abstract This experiment will review the use of three lab instruments
More informationDSTS-3B DEPTHSOUNDER TEST SET OPERATOR S MANUAL
Page 1 1.0 INTRODUCTION DSTS-3B DEPTHSOUNDER TEST SET OPERATOR S MANUAL The DSTS-3B is a full-featured test set designed for use with all types of echo sounders from small flashers to large commercial
More informationAn Introduction to Antennas
May 11, 010 An Introduction to Antennas 1 Outline Antenna definition Main parameters of an antenna Types of antennas Antenna radiation (oynting vector) Radiation pattern Far-field distance, directivity,
More informationIntroduction to the Analog Discovery
Introduction to the Analog Discovery The Analog Discovery from Digilent (http://store.digilentinc.com/all-products/scopes-instruments) is a versatile and powerful USB-connected instrument that lets you
More informationExercise 4. Ripple in Choppers EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Ripple
Exercise 4 Ripple in Choppers EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with ripple in choppers. DISCUSSION OUTLINE The Discussion of this exercise covers the following
More informationExperiment 19. Microwave Optics 1
Experiment 19 Microwave Optics 1 1. Introduction Optical phenomena may be studied at microwave frequencies. Using a three centimeter microwave wavelength transforms the scale of the experiment. Microns
More informationSensitivity of Series Direction Finders
Sensitivity of Series 6000-6100 Direction Finders 1.0 Introduction A Technical Application Note from Doppler Systems April 8, 2003 This application note discusses the sensitivity of the 6000/6100 series
More informationLAB 7: THE OSCILLOSCOPE
LAB 7: THE OSCILLOSCOPE Equipment List: Dual Trace Oscilloscope HP function generator HP-DMM 2 BNC-to-BNC 1 cables (one long, one short) 1 BNC-to-banana 1 BNC-probe Hand-held DMM (freq mode) Purpose: To
More informationGentec-EO USA. T-RAD-USB Users Manual. T-Rad-USB Operating Instructions /15/2010 Page 1 of 24
Gentec-EO USA T-RAD-USB Users Manual Gentec-EO USA 5825 Jean Road Center Lake Oswego, Oregon, 97035 503-697-1870 voice 503-697-0633 fax 121-201795 11/15/2010 Page 1 of 24 System Overview Welcome to the
More informationFMR622S DUAL NARROW BAND SLIDING DE-EMPHASIS DEMODULATOR INSTRUCTION BOOK IB
FMR622S DUAL NARROW BAND SLIDING DE-EMPHASIS DEMODULATOR INSTRUCTION BOOK IB 1222-22 TABLE OF CONTENTS SECTION 1.0 INTRODUCTION 2.0 INSTALLATION & OPERATING INSTRUCTIONS 3.0 SPECIFICATIONS 4.0 FUNCTIONAL
More informationBidirectional PWM DC Motor Drive with Regenerative Braking
Exercise 2 Bidirectional PWM DC Motor Drive with Regenerative Braking EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with two better types of PWM dc motor drives: the buck-boost
More informationENGR 210 Lab 6 Use of the Function Generator & Oscilloscope
ENGR 210 Lab 6 Use of the Function Generator & Oscilloscope In this laboratory you will learn to use two additional instruments in the laboratory, namely the function/arbitrary waveform generator, which
More information