摘要
研究了主动声纳抗多途信号处理方法——累积和检验算法的门限确定方法。采用矩阵法计算其虚警性能,推导了门限计算公式,在非时变的假设下,论证了计算门限所设定的最低可检测信噪比10dB的合理性,分析了当回波序列中目标处实际信噪比与设定的最低可检测信噪比不符合时,该算法虚警性能的变化。仿真和海试数据验证了这种门限确定方法的有效性。
The threshold calculation method of the Page Test for detecting multipath signals is studied. The matrix method is used to analyze the false alarm performance. The threshold calculation formula is deduced. With the time-unvarying assumption, the rationality of SNR （10dB） which is designed as the lowest detectable signal-to-noise ratio is demonstrated for the calculation of the threshold, and the variation of the false alarm performance is analyzed when the designed SNR is mismatched with the true SNR of the target in active sonar echoes. The efficiency of the method is proved by simulations and the experiments on the sea.
出处
《声学技术》
CSCD
2009年第3期303-306,共4页
Technical Acoustics
关键词
累积和检验
多途检测
门限
page test
multipath detection
threshold.
