海洋中存在大量的噪声及混响干扰，为进一步提高船舶声呐系统的探测距离，需要从干扰背景中，对信号进行有效检测，为此运用水声信号处理技术中的快速捕获算法。明确水声信号的传播特性，了解并掌握信号的捕获原理。通过对经典捕获算法的分析发现，它们在实际应用中存在不足，以现有的算法为基础，提出一种改进算法。经验证该算法在深海船舶低频水声信号捕获中具有良好的适用性，捕获速度快，灵敏度和精度高。
The ocean is a relatively complex environment, in which there is a large amount of noise and reverberation interference. In order to further improve the detection distance of the ship sonar system, it is necessary to effectively detect the signal from the interference background. At this time, it is necessary to use the underwater acoustic signal. Processing technology mutual fast capture algorithm. Based on this, it is necessary to clarify the propagation characteristics of underwater acoustic signals, and to understand and master the principle of signal capture. Through the analysis of classical capture algorithms, it is found that they are insufficient in practical applications. Based on the existing algorithms, an improved algorithm is proposed. It has been verified that the algorithm has good applicability in the capture of low-frequency underwater acoustic signals of deep-sea ships, with fast capture speed, high sensitivity and precision.
2022,44(6): 102-105 收稿日期：2021-11-01
DOI：10.3404/j.issn.1672-7649.2022.06.021
分类号：TP274
作者简介：张高勤(1972-)，女，硕士，实验师，主要研究方向为土木工程计算机应用
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