fmcw mm wave detection haiden object
TRANSCRIPT
W-band FMCW Sensors for Remote Detection
of Hidden Objects and Persons
(Prof. Y. Pinhasi, Prof. B. Kapilevich, Dr. M. Einat)
Clutte
r
Man target
RX
TX
IF
LO
RF
FMCW
Source
15-16
GHz
DAQ LNA
Power
divider
Mixer
Multiply
x 6
Multiply
x 6
target
The offset angle of the radar
Antenna
Antenna
Block-diagram of the sensor Experimental setup “Solid Works” art-design Recorded signal in IF channel before processing After processing
Reception parameters: 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
Transmission parameters: 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
Lab-View Interface
Experiments: In-door and Out-door
• Detecting a person at distance 60m
• Detecting electric power line in presence of clutters
• Gun covered by a fabric
MATLAB graphs of reflections
from different targets detected
within 60-meter from the radar
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,
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
RF Microwave MMwave Lab
Noise floor
Corner
reflector
Adult
Child