Polarization Discrimination between Modulation Polarization Decoy and Radar Target
Shi Longfei · Signal Processing · 2008
The repeater decoy using DRFM technology is a great threat to radar increasingly. It' s an available approach which discriminate and eliminate decoy by using the different polarization character of target and decoy. But actual polarization discrimination methods are available only for the decoys with invariable polarization state in the pulse-width. Discrimination method between modulation polarization decoy and radar target is studied in the paper. At first,a new polarization processing manner is proposed which based on ten- sor product receiving of the incident wave vector. After this process,the target echo vectors are transformed to one point in the four-di- mensional space,but the decoy vectors diffuse in the space desultorily. With this difference,the discrimination Algorithm is designed u- sing the divergence of matrices. The simulation results and analysis conclusion demonstrate the method in this paper is effective on the discrimination of radar target and modulation polarization decoy.