Method and device for the elimination of the intermediate freque

Details Method and device for the elimination of the intermediate freque Method and device for the elimination of the intermediate freque

1995-04-20

1996-11-19

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Clutter elimination

Mti

342162, G01S 13524

Patent

active

055767125

ABSTRACT:
The device for the elimination of intermediate frequency echoes from fixed targets carries out the cancellation of the echoes from the fixed targets by the storage, in the form of amplitude and phase samples, of the response to the first pulse of a burst reduced to video band, the synthesis on the basis of these samples of an intermediate frequency replica of the response to the first pulse of a burst and the subtraction of the synthesized replica from each of the subsequent pulses of the burst. It is of the double cancellation type, the preparation of the replica being done in two steps, a first rough-working step in which a rough replica is prepared and a second refining step in which the modelling error of the rough replica is taken into account.

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Lee R. Moyer, et al., "Analog Clutter Cancellation Algorithms for Dynamic Range Reduction", IEEE Aerospace and Electronic Systems Magazine, Oct. 1993, No. 10, pp. 10-14.

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