Polarization Purity, Jamming Power and Time-Sharing Analysis for Cross Polarization Jamming

Amplitude-comparison monopulse radars use a single pulse to make angular measurements by comparing the amplitudes of four sub-beams. The polarization characteristics of the waves reaching the radar receiver antenna play a crucial role in the angular measurement capability of the monopulse radar. Therefore, cross-polarization jamming is used in monopulse radars to generate angular error in the angular tracking loop. In this paper, the relationship between the polarization purity and output power of the jamming output antenna and the angular error of the monopulse radar angle processor is investigated in detail. In addition, a time-sharing cross-polarization jamming analysis is performed on two radars to determine the relationship between the radar beam width and time-sharing ratios.