METHOD FOR SPATIO-TEMPORAL ADAPTIVE SIGNAL PROCESSING IN A MONOPULSE SHIPBORNE RADAR WITH AN ACTIVE PHASED ANTENNA ARRAY Russian patent published in 2020 - IPC G01S7/36 G01S13/28 H01Q3/26 

FIELD: radar ranging and radio navigation.

SUBSTANCE: invention is intended for suppression in the main beam and side lobes of antenna beam pattern (ABP) of combined interference (mix of active and passive jamming) in radar systems (ship-based radars) having active phased antenna arrays (APAR). Method provides two-stage processing of three-dimensional data stream from elements (subarrays) of receiving antenna (N spatial channels on M received pulses and K of range resolution elements) for the purpose of step-by-step formation of adaptive weight coefficients of spatial minima created for different directions of active interference and Doppler frequency values in different range elements.

EFFECT: application of the derived weight coefficients to the data stream enables to form a set of independent beam patterns, control them in space and process them both in space, and in time to increase detection and measurement of coordinates of location of surface and air objects in conditions of uncertainty of interference environment; invention increases degree of suppression of active and passive interference in monopulse shipborne radars with APAR by not less than 15 %; simultaneously, the signal processing algorithm is simplified and time for suppression of active and passive jamming in shipborne radars is reduced by more than 2 times.

4 cl, 3 dwg