Transcript
W-band FMCW Sensors for Remote Detection RF Microwave of Hidden Objects and Persons MMwave Lab (Prof. Y. Pinhasi, Prof. B. Kapilevich, Dr. M. Einat) FMCW Source 15-16 GHz
TX
Multiply x6
Power divider
Antenna
Multiply x6
LO RF
IF DAQ
Mixer
Antenna
LNA
RX
Block-diagram of the sensor
“Solid Works” art-design
Experimental setup
Recorded signal in IF channel before processing
After processing
Transmission parameters: Reception parameters:
Man target Clutte
Receiving antenna gain: 35dBi Base band Low pass filter: 3KHz Video amplifier:10dB 12bit DAQ Sampling rate: 22 KHz Lab view controlling software MATLAB processing program
Synthesizer frequency range: 15-16 GHz, frequency span = 200MHz, multiplication = 6 Transmitted frequencies: 90 -96 GHz Linear FM Frequency deviation:1.2GHz Sweep time: T= 0.25sec Transmission Power: 10mW Transmitting antenna gain: 35dBi
r
B.Kapilevich, Y.Pinhasi, M.Anisimov, B.Litvak, D.Hardon, “FMCW MM-wave Non-Imaging Sensor for Detecting Hidden Objects”, Spain, 2011, IEEE MTT-S, Int. Workshop on MMwave Technologies, pp.664 -667,
Lab-View Interface
target
The offset angle of the radar
Noise floor
Experiments: In-door and Out-door • Gun covered by a fabric
Corner reflector
Adult
• Detecting a person at distance 60m • Detecting electric power line in presence of clutters
Child
MATLAB graphs of reflections from different targets detected within 60-meter from the radar
B. Kapilevich, Y.Pinhasi, M.Anisimov, B.Litvak, D.Hardon, Y.Wool, “Detecting power lines using 330GHz FMCW sensor”, Microwaves, Communications, Antennas and Electronics Systems (COMCAS), 2011 IEEE International Conference on , 2011 , pp.1 – 4, Tel Aviv. Research students: M. Anisimov, Y. Wool, A. Etinger, N. Balal
