Communications: directive radio wave systems and devices (e.g. – Determining velocity
Patent
1992-11-17
1997-08-12
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Determining velocity
342107, 342115, 342132, 342134, 342137, 342145, G01S 1350
Patent
active
056570228
ABSTRACT:
Range-Doppler ambiguity is eliminated from an ultra-wideband radar system by transmitting an ultra-wideband chirped pulse towards a moving target, and mixing it with the doppler-shifted chirped pulse which is received as a target echo return signal. Multioctave radar tracing systems can potentiality track stealth aircraft without ambiguity since pulses containing many frequencies can defeat narrow-band radar absorbing material coatings. The unambiguous range-doppler signal processing method mixes the chirped pulse to yield an instantaneous Doppler frequency (which indicates target velocity) and a rate of change in the instantaneous Doppler frequency (which indicates target acceleration).
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Van Etten Paul
Wicks Michael C.
Auton William G.
Sotomayor John B.
The United States of America as represented by the Secretary of
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