中文摘要：

提出了一种利用相位匹配直接提取接收数据中的目标回波以进行主动声纳混响抑制、回波检测的新方法。该方法首先构造子阵化的直接数据域波束形成，得到期望信号方向的若干波束输出序列；然后利用序列中信号相位与目标方位的依从性，直接解算出回波序列；再通过设计对应的检测量进行目标检测。区别于传统相关接收和空时自适应处理（space-time adaptive processing, STAP）的方法，该方法无需考虑混响与信号的相关性和统计特性。通过试验分析，新方法较传统方法具备更好的检测性能。

英文摘要：

A new method is proposed to extract the echo of targets from the receiving data with phase matching for the case of reverberation suppression and echo detection of active sonars. First, the sub-arrayed direct data domain beam-forming is constructed to obtain the output time sequences in signal orientation. Second, the echo of targets is calculated by using the relationship between signal phase and object orientation from output sequences. Then, some special functions are designed for detection in this scene. Unlike the traditional correlation techniques and space-time adaptive processing （STAP） methods, the proposed method does not need to know the statistical properties and correlation between signals and reverberation. By the analysis of experimental data, it is verified to be more efficient than the conventional process.