Target Detection for Multistatic Radar in the Presence of Deception Jamming

Abstract

This study investigates the target detection problem of multistatic radar in the presence of deception jamming. A detection algorithm based on non-coherent integration is presented to determine whether a target exists in each probed spatial resolution cell (SRC). This algorithm can suppress the jamming to some extent because the spatial divergence of the jamming signal inhibits the effective energy accumulation for detection. However, a jamming signal influences more SRCs than a target. Given that the power of deception jamming is usually larger than that of the target, the global statistics of the SRCs can still exceed the detection threshold with a certain probability, which leads to many false targets. Therefore, a discriminator is presented to distinguish the jamming signals from the target echoes and noises. Subsequently, a joint target detection and deception jamming suppression method that can simultaneously detect targets and suppress the jamming is derived to eliminate the interference in the relative SRCs. Simulation results show that the proposed algorithm can suppress the deception jamming while accurately detecting multiple targets.