基于相位匹配原理的宽带信号接收方法

Wideband Signal Interception Method Based on Principle of Signal Matched-Phase

针对传统数字信道化侦察接收结构难以采用简单方法对宽带跨信道信号进行无失真重构,以及存在兔耳效应的问题,提出了一种基于相位匹配原理的宽带信号接收方法。该方法采用改进的相位匹配算法对多通道延迟欠采样信号解频域模糊进而获取子信道信号。由于其任意相邻子频带可无缝拼接,所以该宽带信号接收方法能无失真重构宽带跨信道信号,同时避免了兔耳效应问题。仿真结果证明了该方法的有效性。

In conventional digital channelized structure, aside from rabbit-ear effect, there is no simple way to reconstruct the wideband cross-channel signal without distortion. Based on the improved algorithm of signal matched-phase, a wideband signal interception method is presented, where the sub-channels can be seamlessly combined. The method uses signal matched-phase to solve frequency ambiguity in the case of multi-channel undersampled signals. It can reconstruct the wideband cross-channel signal with neither distortion nor rabbit-ear effect. The simulation results show the effectiveness of the presented method.