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检测多回路主动声纳回波信号是水声信号处理的核心问题。文章研究新的解决方法——频谱分析在主动声纳的数据检测中的应用,频谱分析的不固定灵敏度被应用于发展宽频带信号和噪声的门限检测器。水流和噪声的检测精度不作要求。通过理论分析将信噪比和时频宽特性用函数式表达出来,并且通过计算机模拟检验结果,显示出此方法对传统的检测器有着更为良好的适应性。
Detecting multi-loop active sonar echo signals is the key issue of underwater acoustic signal processing. The article studies the new solution - the application of spectrum analysis in active sonar data detection, and the unsteady sensitivity of spectrum analysis has been applied to the development of threshold detectors for wideband signals and noise. Water and noise detection accuracy is not required. Through the theoretical analysis, the signal-to-noise ratio (SNR) and time-frequency bandwidth (FWHM) characteristics are expressed functionally, and the result of computer simulation shows that this method has a better adaptability to the traditional detector.