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兵工学报 ›› 2019, Vol. 40 ›› Issue (1): 143-152.doi: 10.3969/j.issn.1000-1093.2019.01.017

• 论文 • 上一篇    下一篇

一种基于双极性脉冲信号的沉底及掩埋小目标探测方法

岳雷   

  1. (昆明船舶设备研究试验中心,云南 昆明 650051)
  • 收稿日期:2018-05-14 修回日期:2018-05-14 上线日期:2019-03-12
  • 作者简介:岳雷(1988—),男,工程师。E-mail:yuelei750@foxmail.com

A Detection Method Based on Bipolar Pulse for Undersea and Buried Small Targets

YUE Lei   

  1. (Kunming Shipbuilding Equipment Research and Test Center, Kunming 650051, Yunnan, China)
  • Received:2018-05-14 Revised:2018-05-14 Online:2019-03-12

摘要: 针对沉底及掩埋小目标探测需求,设计低频双极性脉冲信号,提出基于双极性脉冲信号的空间与时间(简称空时)联合探测方法。分别从频谱、模糊度函数分析探测信号,根据声纳方程分析探测沉底及掩埋目标信混比情况,并搭建试验平台,完成了探测沉底小目标的试验验证。理论分析、仿真计算及试验结果表明:低频、窄波束、小掠射角方式有利于探测沉底及掩埋小目标;低频双极性脉冲信号及空时联合探测方法作为一种新型探测信号及处理方法,可提高沉底及掩埋小目标的空间分辨能力及混响抑制性能。

关键词: 沉底及掩埋小目标, 双极性脉冲, 空间与时间联合探测, 试验验证

Abstract: A low-frequency bipolar pulse is designed and a space-time joint detection method is proposed for detecting the undersea and buried small targets. The detected signals are analyzed from spectrum and wideband ambiguity function, respectively. A signal-to-reverberation ratio of detecting undersea and buried small target is analyzed based on sonar equation. The test verification of small target was completed by a test platform. Theoretical analysis, simulation calculation and test results show that the low frequency, narrow beam and small grazing angle are favorable for detecting the undersea and buried small target. Low-frequency bipolar pulse and space-time joint detection method can be used as a new detecting signal and method, respectively, which can improve the spatial resolution and the performance of reverberation suppression for undersea and buried small targets. Key

Key words: underseaandburiedsmalltarget, bipolarpulse, space-timejointdetection, testverification

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