Method and device for improving the angular discrimination, particularly the discrimination in azimuth angle, of a radar system in relation to complex targets

摘要

The method comprises the following steps: (a) determination of a target profile (P) consisting of a series of discrete values of the received amplitudes corresponding to the successive recurrences of a given beam for the same small range of distance, (e) determination of the number of changes in the sign of the gradient of the amplitudes of this target profile. The following step is provided between steps (a) and (e): (d) application, to the series of discrete values forming the target profile (P), of spatial low-pass digital filtering, particularly a filtering of the cosine type, for extracting from it a profile envelope (P'), step (e) for determining the number of changes of sign in the gradient of the amplitudes then being applied only to this envelope (P'). IMAGE