峰值能量检测及其在被动声纳显示中的应用

本文介绍子带峰值能量检测方法及其在被动声纳显示和检测中的应用2-4]，同时提出了波束域宽带峰值能量检测算法。新的波束域算法是在已有波束形成的基础上进行处理，不需对原系统进行较大的修改。通过波束域宽带峰值能量检测处理，可以改善声纳显示效果，更加清晰地显示目标方位。相对于高分辨率波束形成算法，两种峰值能量检测算法的运算量都比较低，具有一定的工程应用前景。通过计算机仿真和实测数据处理，验证了所述两种峰值能量算法在提高显示清晰度，减小测向模糊度方面的优点。

Peak energy detection with application to passive sonar display

Sub-band Peak Energy Detection and its application in passive sonar display are discussed in this paper. In addition, a new algorithm, Beam-domain broadband Peak Energy Detection, is proposed. The new algorithm is implemented based on the existing beam-forming system and so eliminates the necessity for significant system modification. Compared with the conventional high-resolution beam-forming algorithms, the peak energy detection algorithms have the advantage of better display performance, higher precision of target azimuth estimation and lower computation cost. Comparison between these two algorithms is also conducted in this paper. Computer simulation and field-data experiment verify the feasibility of the technique.