一种估计主动声纳回波扩展时间的有效方法

摘要

针对主动声纳探测中目标回波扩展时间实时测量的难点,提出将累积和检验算法用于估计回波扩展时间.设计了算法流程,研究了累积和检验算法非线性量的计算方法.在验证估计精度时,和传统的搜索最大检验统计量法进行了对比,并利用仿真和海试数据进行了验证,结果表明:传统方法搜索速度慢,易出现误判,而累积和检验算法在完成检测的同时,能有效平滑混响,能以较高精度和效率确定回波扩展时间,并且可以实现在线处理.%In active sonar detection,it is difficult to realize the real-time measurement of the target echo spreading time.The Page Test was proposed to evaluate the spreading time in this paper. The new algorithm flow was designed and the nonlinearity was calculated.It was compared with the traditional method of searching the maximal statistic.The simulation and experiment on the sea prove that the Page Test can smooth reverberation and evaluate the target echoes spreading time efficiently along with the implementation of detection,relatively to die slow searching speed and high error ratio of the traditional method. It can also realize real-time processing.