Research Project INTEGRATED SYSTEMS FOR HYDROGEOLOGICAL RISK MONITORING, EARLY WARNING AND MITIGATION ALONG THE MAIN LIFELINES RADAR SYSTEMS FOR LANDSLIDES EARLY WARNING G. Di Massa, S. Costanzo, F. Spadafora, A Raffo, A. Costanzo, L. Morrone, A. Borgia,
UNIVERSITÁ DELLA CALABRIA RADARS for remote sensing of the environments Applications: a) Range detection; b) Velocity determination; c) Measurements of soil moisture and soil composition; d) De embedding of objectto to observe; e) Tomography of one or more (de embedded) object.
UNIVERSITÁ DELLA CALABRIA RADARS for remote sensing of the environments Techniques: a) Pulse Radar; b) Continuous wave Radar; c) Synthetic Aperture Radar, eventually ground based; d) Sparse Antenna Array Design for Radar Sensors.
UNIVERSITÁ DELLA CALABRIA RADARS for remote sensing of the environments Technologies: Low cost technologies like SDR (Software Defined Radar) Integrations of knowledge in Radar techniques, electronic, microwave and model. Integration of several techniques like GNSS, radiometers, etc.
UNIVERSITÁ DELLA CALABRIA RADARS for remote sensing of the environments Parameters Frequency > we see some objects when the wavelength is of the same order Polarization > > we can discriminate the orientation of objects Pixel > the minimum area that we can see (depend essentially from antennas)
WE TALK ABOUT Context; L band Software Defined Radar PON 01503 Landslides Early Warning Introduction to the technology Software Defined Radar System; NI USRP 2920 L band Software Defined Radar Hardware Description Signalprocessing technique Test and Results
Context L band Software Defined Radar PON 01503 Landslides Early Warning The L band Software Defined Radar is a sensor areal developed in the framework of the PON 01_ 01503 NATIONAL ITALIAN PROJECT LANDSLIDES EARLY WARNING, FINANCED BY THE ITALIAN MINISTRY OF UNIVERSITY AND RESEARCH Goal of the project improve the research activities on the Landslides monitoring over the Italian highways
L band Software Defined Radar Context Initial objectives in radar development Ensure the possibility to go over vegetation layer on the mountain Ensure the innovation i technologies Hardware Low cost
L band Software Defined Radar Context Ensure the possibility to go over vegetation layer on the mountain Choose of the L band operating frequencies at 18GHz 1,8GHz Low frequencies high h penetration ti
L band Software Defined Radar Introduction to the technology Ensure the Innovation technologies SOFTWARE DEFINED RADAR SYSTEM The Software Defined Radar (SDRadar) system is a special type of versatile radar in which operations and components, typically realized by specific hardware (i.e., mixers, filters, modulators and demodulators), are implemented in terms of software modules T. Debatty, Software Defined RADAR a state of the art,
L band Software Defined Radar Introduction to the technology Ensure the Innovation technologies SOFTWARE DEFINED RADAR SYSTEM the main idea is the directly digitalization of the incoming radar signal and the totally execution of the signal processing operations via software in a general purpose computer. Ideal Block diagram
L band Software Defined Radar Introduction to the technology Ensure the Innovation technologies Main Advantages Versatile system Possibility to create Multipurpose Radar only changing the software Hardware reuse VeryLow cost system SOFTWARE DEFINED RADAR SYSTEM
L band Software Defined Radar Introduction to the technology Ensure the Innovation technologies NI USRP 2920 SOFTWARE DEFINED RADAR SYSTEM The Platform NI USRP 2920 is a Software Defined radio transceivers designed by NationalInstruments for wireless communications teaching and research. The NI USRP 2920 is the central core of the L band Radar System
L band Software Defined Radar L band Software Defined Radar Hardware Description Block Diagram
L band Software Defined Radar L band Software Defined Radar Hardware Description MXE 5302 Single Board Computer USRP 2920 SDR transceiver Antenna Rotor Scanning system Amplification circuit Power Amplifier GAIN 35dB Low noise Amplifier GAIN 15dB Remote Control system Possibility to control the radar by e mail or sms
L band Software Defined Radar Signal Processing tecnique The radar signal processing adopted is a particular pulse compression technique called Stretch Processor four distinct steps 1) Rx signal is mixed with a replica of the transmitted waveform; 2) Low Pass Filtering (LPF) and coherent detection are performed in order to avoid the high frequency response achieved at the output of the Mixer. 3) Analog to Digital (A/D) conversion 4) Fast Fourier Transform is used to extract the tones proportional to the target range. ALL THE PROCESSING IS PERFORMED VIA SOFTWARE In the SBC MXE5302
Antenna L band Software Defined Radar Elementary square cell sizes are 10cm x 10cm, while the dimensions of the entire array are 80cm x 40cm. Each element has been covered by a thin silver film in order to avoid copper oxidation and the final geometry has been obtained assembling two independent 4x4 square modules
Antenna L band Software Defined Radar E Field Radiation Rditi Ptt Pattern at the frequency f= 1.8GHz 18GH A gain of more than 20dB has been achieved according to a 20% input impedance frequency bandwidth obtained (significantly higher inrespect to the classical rectangular patch). A beam width of 11 in the E Plane and 22 in the H Plane has been achieved in the entire frequency band, in theoretical analysis and in both simulations and measurements.
Antenna L band Software Defined Radar Antennas integrated into the Software Defined Radar System The antenna has been designed, fabricated and tested in the Microwave Lab at University of Calabria
Test and results L band Software Defined Radar Inorder to validate the L Band radar system and signal processing tecnique open In order to validate the L Band radar system and signal processing tecnique open space and anecoich chamber test has been performed.
Test and results L band Software Defined Radar Inorder to validate the L Band radar system and signal processing technique open space and anechoic chamber test has been performed. The aim of the experiments was the detection of a metallic laminate at several distances Radar system response with a target dt detection ti approximately 54m
C BAND STEPPED FREQUENCY CONTINUOUS WAVE RADAR
STEPPED FREQUENCY CONTINUOUS WAVE RADAR
BLOCK DIAGRAM Signal Processor Remote Power Control Source Control TX RX Scatterometer Box Source Selector Box Switch TX Antenna Antennas Box RX Antenna
PWSWITCH Scatterometer Box VGA_MXE 220V AC Copper Mountain Technologies Planar 804/1 Port1 Port2 USB Embedded PC MXE USB SERV_US SB_MXE PWRAmp Cernex CBM06123023 5V 6A DC Traco Power TOP 60252 12V 3A DC ETH RJ45 LNA WBA2080A HDMI HDMI_RASP 240 PTSK Power Rasp Power USB GPIO(0) 1:4) GPIO( 5V 1A DC 5V 1A DC SBC Raspberry USB USB SERV V_USB_RASP 220V AC PWIN TX RX GPIO(1:4) PW_USB_RASP
Box Scatterometro Copper Mountain Technologies Planar 804/1 LNA WBA2080A Traco Power TOP 60252 ON OFF switch PTSK 240 PWR Amp Cernex CBM06123023 Embedded PC MXE Power Rasp SBC Raspberry Power USB
Box Scatterometer PWIN GPIO(1:4) SERV_USB_RASP HDMI_RASP PWSWITCH PW_USB_RASP ON OFF SERV_USB_MXE TX VGA_MXE RX
Complete system PWSWITCH Box Scatterometer PWIN TX RX GPIO(1:4) PW_USB_RASP Huawei E220 HSDPA Modem 220V AC PWIN RFOUT Select_Switch(1:4) Box Switch RFIN Box Antenne
Transmitting Antenna
Receiving i Antenna
Sistema completo Box Antenne Box Switch Box Scatterometer
Test in camera anecoica Setup Box Scatterometro Client setup form Antenna TX Antenna RX
Client Windows SetupForm Range Resolution 30cm
Client Windows Misure Form
Misure 1Target HRRProfile 130cm Picco d misurata d calibrazione = =600 cm 470 cm = = 130cm
Misure 1Target HRRProfile 310cm Picco d misurata d calibrazione = =780 cm 470 cm = = 310cm
Misure 2Target Tg1 Tg2 =80cm Tg1 d=500cm Tg2 d=420cm
Misure 2Target HRRProfile Picco Tg2 d misurata d calibrazione = =890 cm 470 cm = = 420cm Picco Tg1 T1 d misurata d calibrazione = =970 cm 470 cm = = 500cm
Advanced Ground Based SAR switch Frequency conversion ADC Numerical elaboration
Sparse Antenna Array Design for FMCW Radar Sensors FMCW FMCW FMCW Numerical elaboration Integration with: 1) Interferometric techniques; 2) Models of the whole system sstem