A Novel Radar-communication Joint Beam-forming Based on Optimal SINR

Abstract

In traditional radar-communication electronic warfare, independent radar and communication systems can seriously affect the performance of combat platforms due to spectrum overlap. A joint beam-forming algorithm which can be used to transmit and receive radar and communication signals at the same time is proposed to solve this problem. In this approach, the power for the radar and communication are optimally allocated under the signal-to-interference-plus-noise-ratio (SINR) constraint of communication firstly. Then combined with the linearly constrained minimum variance (LCMV) algorithm, the joint beam-forming is optimized using Lagrange multiplier method. The simulation results show that the proposed method can obtain a higher SINR of radar echo and suppress the jamming effectively in other directions.