A new method of ship and chaff polarization recognition under rain and snow cluster

In Warfare on the sea, passive interferences include not only chaff but also surrounding atmosphere such as rain and snow, these factors will influence final recognition of targets. This paper solves the problem by polarization theory. This method is based on the radar which can receive both left and right circularly polarized wave and obtain the full polarization information of echoes. Firstly, the path influence of rain and snow from polarization power matrix is eliminated in order to correct the power matrix of targets. Secondly, the distinguishing rate of targets from chaff is increased employing non-linear polarization transformation to increase the polarization range ratio of echoes. Finally, Simulation experiments show the method is effective.