基于相位补偿的单通道接收阵列测向方法

Direction Finding Based on Phase Compensation in Single Receiver System

多通道阵列测向系统存在硬件量大、造价高及多通道间不一致时性能恶化等诸多不足,因而提出一种基于相位补偿的单通道接收阵列测向方法。所有阵元共用一个接收通道,通过切换开关分时选通各阵元,各阵元的感应信号在时域上是错开的,无法进行超角分辨测向。在频域上补偿各切换时延引入的附加相位后,使得各路信号在时域对齐,此时可进行超角分辨测向。计算机仿真实验说明了此系统模型和信号处理方法的正确性。

Multiple-sensor array direction finding system has much disadvantages ,such as large hardware,high cost and deterioration of performance because of the difference during multiple channels.A mono-channel array signal processing method which is based on equalizing the phase of the signals from every antenna is put forward.All antenna has a monochannel and every antenna is separately selected every time,so array signal processing for directing finding can＇t go ahead.After phase equalization in frequency domain,all signals occur at the same time,then direction finding can be carried out.The results of experiments prove the rightness of the new method.