APPLICATION OF DBF TECHNIQUE TO RADAR SYSTEMS

This paper describes a DBF (Digital Beamforming) technique as a spatia l filtering in the radar systems. DBF for a beamformer and an adaptive processor are discussed. An architecture for the beamformer is propos ed. The beamformer discussed consists of systolic arrays that can form beams arbitrarily. Antenna radiation patterns measured in an open sit e are shown. For the adaptive processor, Gram-Schmidt transformation m ethod is attained by using systolic arrays. Proposed is a means to pre vent target signals from being suppressed in cells of the systolic arr ays and.to achieve the convergent characteristics independent of the m agnitude of undesired signal power. In order to demonstrate the perfor mance of the proposed processor, a test model of the adaptive processo r was developed and tested in multiple undesired signal environment. T est results are indicated.