System for the suppression by matching techniques of unwanted ec

Details System for the suppression by matching techniques of unwanted ec System for the suppression by matching techniques of unwanted ec

1978-07-21

1980-08-12

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 7A, G01S 942, G01S 902

Patent

active

042175844

ABSTRACT:
Disclosed is a method for the suppression by complex conjugate cancellation of unwanted radar echoes caused both by obstacles stationary with respect to the radar transmitter as well as obstacles having a relative speed with respect to the radar transmitter. Cancellation is achieved by the use of a conventional type cancelling operator with at one input a constant weight equal to 1 and at the other input a weight variable in such a way as to make the frequency response of the cancelling operator equal to zero instant-by-instant for a Doppler frequency equal to the average frequency of the unwanted echoes.

REFERENCES:
patent: 3882498 (1975-05-01), McGuffin
patent: 3993994 (1976-11-01), Goggins
patent: 3995271 (1976-11-01), Goggins, Jr.
patent: 4031364 (1977-06-01), Wilmot

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