雷达信号I/Q通道幅相误差校正的新方法

A Novel Method of Radar Signal I/Q Channel Amplitude-phase Error Correction

提出了一种新的基于信号时域统计特性的的雷达信号I/Q通道幅相误差的校正方法,给出了实际校正网络框图.仿真结果表明,存在幅相误差的信号经该网络校正后,主信号和镜象信号功率之比达到了60dB以上,可以满足后续信号处理系统对弱小目标检测和目标识别的要求.

This paper proposes a new correction method of the amplitude-phase error in I/Q channel based on the signal statistical characteristics in time domain, and gives the block diagram of correction network. Simulation shows that the power ratio of the main signal to the mirror signal can be up to 60dB when the signal with amplitude-phase error is corrected by the network. Therefore, it can be widely used for the signal processing system, especially the weak signal detection and the target recognition system.