Pulse-Doppler radar receiver with an interference suppression circuit

摘要

In order to suppress radially arranged narrowband stationary interfering stations in pulse-Doppler radar receivers with range channels and clutter filters, the characteristic of a Doppler filter comprising n subfilters is modified in subranges in which a specific frequency of the interfering station has been determined by means of a residual clutter diagram following a plurality of antenna rotations. The passband of the Doppler filters is matched to the spectral character of the interference of the associated resolution cell (range channel/angular unit) by interruption of the signal transmission path of the subfilters concerned.