Fixed head Doppler radars

Transcription

1 Weibel Scientific Solvang Allerød Denmark Fixed head Doppler radars Network ready for the future

2 1. Introduction The network ready SL-xxxP family of fixed head Weibel Doppler Radar Systems are highly portable and based on state-of-the-art radar technologies. Transmitting and receiving antennas are microstrip arrays and all electronic components are integrated in the Antenna / Processor unit. The new SL-xxxP family of Doppler Radars can connect directly to your TCP/IP network - and can be accessed and controlled/monitored from any standard PC on the network running the software. This new unique feature enables some new configurations: Easy access to remote un-manned radars through a standard interface. A super user/supervisor can easily assist radar operators in the field. Remote assistance over the internet. Multiple radars and PCs networked together for maximum flexibility. The internal sample memory ensures safe operation on networks with low bandwidth. The fixed head Doppler Radar Systems are based on the renowned SL-520M/W-700 family and are designed to operate under field conditions. The SL-xxxP family incorporates the W-700 signal analyzer functionality into the antenna and a standard PC. The rugged mechanical system design combined with a robust electronic design ensures high reliability and resistance to blast and vibrations from the weapons firing. These radar systems operate on the Doppler principle. The radar antenna transmits a microwave Continuous Wave (CW) signal, receives the echoed signal from the target, and subtracts the transmitted signal from the received signal generating the Doppler signal. The Doppler signal is amplified and digitized in the built-in processor. The digitized Doppler signal are stored in the digital memory. The velocity is calculated using Fast Fourier Transformation (FFT) and digital signal processing. The use of FFT-based calculation enables the system to measure on all types of ammunition and calibers including: Bullets Artillery Mortars Tracers Base bleed ammunition Anti-tank rounds APFSDS Rockets The system is designed to measure velocities from 30 to 3000 m/s with an over-all system accuracy typically better than +/- 0.05%. The system can store over 1000 muzzle velocity results in a non-volatile memory. The Weibel Doppler radar systems incorporate a unique self-calibrating technology as an option. With this option, the system does not need any calibration during its entire life cycle, calibrating itself with the speed of light as a reference. 2. System overview The system consists of the a Doppler radar antenna, with built-in acoustic trigger, processor, and power supply, an optional Muzzle Flash detector FOT-2, peripherals (Power supply, laser printer and Instrumentation Controller) and cables. The Doppler radar system must use all of the Weibel manufactured items; however, the peripherals can be changed. The host controller must be a Windows compatible computer with the control and processing software installed. 2/9

3 2.1. Specifications Fixed Head Doppler Antennas 1 Antenna Antenna Type SL-520P SL-525P SL-15028P SL-30031P Output Power 0.4 ± 0.1 Watt 0.4 ± 0.1 Watt 15 ± 2 Watt 2 30 ± 2 Watt 2 Performance factor 179 ± 2 dbm²/s 185 ± 2 dbm²/s 206 ± 2 dbm²/s 215 ± 2 dbm²/s Tracking range mm projectile 2-4 km 4-6 km 8-12 km km 7.62 mm projectile km km km km Antenna gain 20 ± 1 db 25 ± 1 db 28 ± 1 db 31 ± 1 db Antenna beam 19 x9 ± 1 9 x9 ± 1 9 x4.5 ± x4.5 ± 1 Dimensions 175x175x50 mm 350x175x50 mm 350x350x50 mm 750x350x50 mm Image Rejection No No Yes Yes Weight 4 kg 8 kg 13 kg 23 kg Transmit supply Internal From External Power Supply 4 General Power Supply VDC, 16 Amps max, or 110/220 VAC via external Power Supply Transmitter type Continuous Wave, synthesized solid state Frequency X-band, factory adjustable between and GHz Frequency variation 5 user selectable frequencies, ± 6 MHz around main frequency (optional) Polarization Vertical Receiver number 1 with AGC Noise figure 2.0 db ± 1 db (8.0 db for SL-520P) Phase noise khz offset 5 Trigger source Internal acoustic trigger or optional external muzzle flash detector Selfclibration SeCa: Built-in Velocity calibration generator (Optional) Motion comp. MoCo: Built-in active motion Compensation (Optional) Data acquisition A/D Converter 12 bit Analog to digital converter Anti aliasing filter Software controlled Sampling rate µsec, on 0.2 µsec steps Timing accuracy 1 sample or 10 ppm Trigger source Doppler signal, External Signal memory 128 kbyte to 16 MByte Measuring Modes Single, Multi & Burst 6 Processor Central processor Intel 80386EX Program memory 2 MByte FLASH memory uploaded from the instrumentation controller Signal Processor Analog Devices ADSP Floating Point DSP System interface High Speed RS-422 or optional TCP/IP 10/100TX 7 Environment Humidity 0 to 100%,non condensing Temperature range -20 C to +50 C (operating), -40 C to +65 C (storage) Weibel reserves the right to change the specifications as long as the overall performance is not affected All specifications are typical and can not be guaranteed under all conditions. Not all specifications can be met simultaneously Low Power versions are also available Calculated maximum tracking range under ideal conditions, and no aspect angle Only for high power versions Lower phase noise oscillators are available for long range and flat trajectory applications Up to 10,000 rounds pr minute connection through power supply 3/9

4 2.2. Specifications Minimum specs Processor 1.4 GHz Pentium Memory 128 MByte RAM Hard disc 20 GByte internal Monitor 15 SVGA color monitor Operating system Windows XP or Windows 2000 Back up CD-RW System interface TCP/IP or RS-422 Control software Additional interfaces 1 serial RS-232c, 2 USB ports Power consumption <500 Watt Instrumentation controller 2.3. The function of the sub sections SL-xxxP Block diagram Antenna: Microstrip based Doppler radar antenna including: All microwave components including front end narrow band filter. The narrow band microwave filter ensures that the receiver is not saturated by other radars such as high power pulse radars. The SL-xxxP also includes front end Low Noise Amplifier, I/Q mixer and I/Q low noise base band amplifier Built-in acoustic trigger Trigger system Data acquisition and data processing section for digitization and intermediate storing of the Doppler signal before transfer to the for processing. The hardware and software is based on the renowned W-700 Doppler radar analyzer which has been used worldwide for tests on proving grounds and in private companies. All processing algorithms are the same as used in the W-700. The Doppler signal are digitized and temporarily stored in the internal sample memory during the measurement. The digitized signal are transferred to the IC 700 computer after the measurement for further analysis and permanent storage. This reduces the required bandwidth on the connection to the antenna, and secures against loss of data due to network limitations. 4/9

5 The SL-xxxP software is programmed into non-volatile memory, but the software can be updated via the external interface from the Host-PC without opening the SL-xxxP system box. SeCa: MoCo: FOT-2: CAB-114: CAB-101: Self-calibration, the SL-xxxP system incorporates a unique self-calibration technology, and calibrates the measured velocity with the speed of light as reference. With this optional feature the system does not need regular calibration throughout its entire lifetime. Motion Compensation, the SL-xxxP system includes an optional active motion compensation allowing the system to accurately compensate for the platform motion (i.e. when the system is mounted on a mobile platform), this feature also allows accurate compensation for the actual gun jump when the radar system is installed directly on the gun system. Muzzle flash detector starts the storing of the Doppler signal in the SL-xxxP Radar System. The FOT-2 is optional. Power & communication cable between the SL-xxxP and the, 76 meters. Trigger cable, 20 meters. : : Laser printer: Windows compatible computer controlling the W-700 Doppler analyzer using the Weibel control & analysis program -. Windows based Control & Analysis software. HP Laser printer (or similar). The laser printer is used for printing, plotting, and screen dumps. Because of the structured hardware design and modular software, the system is designed for future modifications and upgrades Configurations The direct network connectivity of the SL-xxxP antennas allows for new flexible configurations including: Multiple radars controlled from a single Multiple radars controlled from multiple over the network Remote operation, with the radar placed at a remote location (i.e. in the hazard zone of the test) Remote supervision and/or diagnostics assistance (i.e. through the internet) Radar 1 Radar 2 Wide Area Network (Internet) Operator 1 Operator 2 (Expert/Supervisor) Advanced configuration - Remote control through internet 5/9

6 Point to Point Configuration Basic - 1 and 1 SL-xxxP radar. - High speed RS-422 or optional connection. Multi users Multi user - 1 SL-xxxP controlled from local (operator). - Data displayed/monitored on second workstation (mission control/supervisor). Operator Supervisor Multi radars Multiple radars - Multiple radars are controlled from single. - For ex. muzzle velocity radar and long range radar. - Can also be configured for multi user/supervisor configuration Radar network Radar 1 Radar 2 Multiple radars in network - Multiple radars controlled from multiple, through standard TCP-IP network - Can also be configured for multi user/supervisor configuration Operator 2 Operator 1 Remote operation Radar 1 Radar 2 Radars accessed through internet or WAN - Remote control of 1 or multiple radars through WAN. - For control of radar placed in danger area - For remote diagnostics/support through Internet Wide Area Network (Internet) Operator 1 Operator 2 (Expert/Supervisor) 6/9

7 3. Control and Analysis software New Windows based Control and Analysis software for Weibel Doppler Radar Systems Main features - All data analysis and curve fitting runs entirely on a standard Windows PC - No processing limitations - 50 % overlap on all measurements - No limitation in FFT size - Calculations based on verified processing software from Doppler analyzer - Same processing as in WinTrack - Fast processing using high-speed computers and interfaces - Spin processing - Setup screen 3.2. Automated measurement flow Reduces user interaction during the measurement and analysis procedure, thus ensuring: - That all data gets saved - That the main data validation screen is shown - Easy to display of the major results of the measured rounds - Easy to load previous series and see results 3.3. User defined graph displays A new multi graph capability allows the software to display several graphs together. The operator can select from a list of predefined layouts or create his own. Validation graphs & session log Multigraph example 7/9

8 3.4. versions & Features list Version Full Lite Features Acquisition control GUI 8 T T Automated measurement flow T T Automated data storage T T Automated session control T T Full session report T T Measure mode: Single, burst & multi T T Advanced curve fitting T T Automated Muzzle velocity calculation T T User specified graphical presentation T T User specified numerical output T T Advanced spin analysis T - Inbore measurement T - Trajectory model T - Drag calculation T - Supported analyzers W-700 and W-700i T T W T T SL-xxxP systems with processor in the Antenna T T W-680i and W-680ii 10 T - W-1000 and W-1000i 7 T - Two versions of the software are available - the Lite version is primarily used with the smaller and less powerful antennas or when the limited features satisfy the user s need Graphical User Interface Through GPIB or serial interface Through Weibel Link (WLINK) interface, USB-WLINK adaptor (optional) 8/9

9 Weibel Scientific Solvang Allerød Denmark NORTH AMERICA: Indian Fields Court Lansdowne, VA USA Phone: Fax: HEADQUARTERS: Solvang Allerød Denmark Phone: Fax: Web: Doc ID: CS Prepared by: FK Date: DEC 2007 Expires: JAN /9