Analysis of cooperative jamming against pulse compression radar based on CFAR

One important issue in radar jamming is the effect of inaccuracies in the radar position, which leads to a number of false targets entering the reference window of the constant false alarm ratio (CFAR) detector to reduce greatly. In this paper, two cooperative jamming methods specifically developed for a pulse compression radar with a CFAR detector are proposed with the aim of increasing the number of false targets when there is uncertainty regarding the radar position. First, several key parameters of the false targets are derived based on the principle of CFAR detection. Then, the principle, which takes advantage of two cooperative jamming methods to achieve a distribution of multiple false targets, is described. Finally, the influence of radar's uncertain position on the two cooperative jamming methods is simulated and analyzed in detail. The simulation result shows that both jamming methods can effectively reduce the radar's recognition rate, but there is a large difference when different interference modes are used by jammers. The obtained conclusion provides guidance for the practical application of cooperative jamming against pulse compression radar.