Abstract
A novel microprocessor-controlled automatic clutter-cancellation subsystem, consisting of a programmable microwave attenuator and a programmable microwave phase shifter controlled by a microprocessor-based control unit, has been developed for a microwave life-detection system (L-band 2 GHz or X-band 10 GHz) which can remotely sense breathing and heartbeat movements of living subjects. This automatic clutter-cancellation subsystem is a drastic improvement over the very slow process of adjusting clutter-cancellation manually in the old microwave system; this is very important for some potential applications, which include locating earthquake- or avalanche-trapped victims through rubble. A series of experiments have been conducted to demonstrate the applicability of this microwave life-detection system. The 2-GHz system performs well for remotely detecting human breathing and heartbeat signals through a pile of rubble of up to about 3 ft thick. The automatic clutter canceler may also have a potential application in some CW (continuous wave) radars.
Original language | English |
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Pages | 177-181 |
Number of pages | 5 |
Publication status | Published - 1990 Jan 1 |
Event | IEEE Instrumentation and Measurement Technology Conference - San Jose, CA, USA Duration: 1990 Feb 13 → 1990 Feb 15 |
Other
Other | IEEE Instrumentation and Measurement Technology Conference |
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City | San Jose, CA, USA |
Period | 90-02-13 → 90-02-15 |
All Science Journal Classification (ASJC) codes
- Engineering(all)