Power Allocation Method for Coexistence of Multicarrier Radar and Jamming System

Abstract

To achieve the integration of radar and jammer, we explore the power allocation problem of multicarrier waveform frequency points to improve the spectral efficiency of the radar and jammer systems coexisting in the same bandwidth. First, the conditional mutual information of random target impulse response and echo signal, and the output signal-to-jamming-noise ratio of the enemy radar under suppressed jamming are established as indicators of the detection and jamming performance of the integrated system, respectively. Then, with the constraint on the total power, the optimization problem, which simultaneously considers the conditional MI for radar and SJNR for jamming, is designed and solved. The designed waveform outperforms the conventional equal power allocation waveform under the limited transmit power. Finally, the effectiveness of the designed waveform is verified by several simulated experiments.