An application of nonlinear spatial filtration methods for improving the small ships observation on the sea clutter background

In the process of synthesizing systems for temporal filtering of signals on a background of passive clutter, created by surface reflections, as a rule, one may use the differences in both distribution laws and spectra of clutter and useful signals, observed in a radar resolution element. The experimental research has allowed one to determine, that the signal, reflected from the sea, is characterized by the presence of a spatial periodic structure. At the same time the sizes of the majority of surface objects do not exceed the size of the radar resolution element and they can be considered as points. So, it is possible to use information about clutter spatial characteristics for improving the radar observation of small sized slow objects on a sea background by applying a spatial auto-compensator. For spatial compensator design it is possible to use the classic principle of matching the signals, separated by some time period. In this paper the possibility of using multiplicative signal multiplexing on the outputs of single-unit compensator channels, realizing different spatial delay, is discussed