波束锐化技术在多波束测深声呐中的应用  

Application of beam narrowing technique in multi-beam bathymetric sonar

作　　者：魏波[1,2] 沈嘉俊[1,2] 周天[1,2] 李海森[1,2] 

机构地区：[1]哈尔滨工程大学水声技术重点实验室,黑龙江哈尔滨150001 [2]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《声学技术》2016年第2期167-173,共7页Technical Acoustics

基　　金：自然科学基金(41327004;41306038;41376103);中国高等学校博士点基金(20112304130003)资助项目

摘　　要：针对常规波束形成器的分辨性能和旁瓣性能间的矛盾,研究了超波束形成器的波束特征以及空间分辨性能。通过计算机仿真验证了加权超波束形成器既有较高的空间分辨力,又有良好的旁瓣特性。通过对外场实验数据的处理,验证了该算法对于多波束测深声呐测量结果中存在的"隧道效应"假象具有明显的抑制作用。针对算法实现结构进行了优化,进一步减小了算法复杂度。利用DSP进行了算法实现,算法具有较好的实时性和工程实用性。For conflict existing between resolution and sidelobe influence in the conventional beamformer （CBF）, the article mainly studies beam features and spatial resolution of hyper-beamformer （HBF）. Computer simulation results demonstrate that HBF can synchronously improve spatial resolution and reduce sidelobe. Processing results of the sea trial data verify that the algorithm can restrain the tunnel effect illusion in multi-beam bathymetric results effectively, and the algorithm has low computational load, good real-time performance and practicability. The algorithm has been evaluated on the platform of DSP and proved to be useful and real-time.

关 键 词：波束锐化 超波束 分辨力 隧道效应 

分 类 号：P715.5[天文地球—海洋科学]