An Automatic Detection Algorithm Based on Wideband Spatial Spectrum of Passive Sonar

被引：0
|
作者：
Liu S. [1 ]
Yao Z. [1 ]
Lu D. [1 ]
Yuan J. [1 ]
机构：
[1] College of Electronic Engineering, Naval Engineering University, Hubei, Wuhan
来源：
Binggong Xuebao/Acta Armamentarii | 2023年 / 44卷 / 06期
关键词：
automatic detection; beam interpolation; local peak detection; sorted truncation average; wideband target detection;
D O I：
10.12382/bgxb.2022.0170
中图分类号：
学科分类号：
摘要：
In passive sonar boardband target detection, detection based on the fixed threshold cannot adapt to the fluctuating background, and it is easy to detect sidelobes or miss weak targets when detecting strong and weak targets coexisting in the scenario. In addition, the targets occupying multiple beams in the detection results can easily generate beam selection bias for accurate direction finding. To solve these problems, the broadband spatial spectrum is used as the test statistic, and the sorted truncation average algorithm, local peak detection and beam interpolation algorithm are combined. Through theoretical and Monte Carlo experiments, the parameters affecting the estimated threshold value are analyzed, and an automatic parameter selection scheme is designed. A detection threshold adaptive method and an integrated scheme of automatic detection and accurate direction finding are developed. The simulations and sea trials have verified the effectiveness of the proposed algorithm and have strong engineering application value. © 2023 China Ordnance Society. All rights reserved.
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页码：1764 / 1774
页数：10
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