| 一种基于DOA分布信息熵加权的线谱目标检测方法 |
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| 引用本文： | 王学成,王鲁军,洪常委.一种基于DOA分布信息熵加权的线谱目标检测方法[J].声学技术,2021,40(1):117-122. |
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| 作者姓名： | 王学成 王鲁军 洪常委 |
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| 作者单位： | 声呐技术重点实验室, 浙江杭州 310012;杭州应用声学研究所, 浙江杭州 310012;声呐技术重点实验室, 浙江杭州 310012;中国船舶集团有限公司军工部, 北京 100097 |
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| 摘 要： | 针对常规宽带能量检测方法对低信噪比线谱目标检测性能较差的不足，文章在分析目标线谱波达方向（Direction of Arrival，DOA）估计分布信息熵的基础上，提出一种基于DOA分布信息熵加权的线谱目标检测方法。通过仿真对比分析了该方法的检测性能，并利用海上实验数据验证了其有效性。结果表明，当目标方位较为稳定时，该方法可有效检测低信噪比线谱目标，并可适用存在多个同频线谱目标的情况。
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| 关 键 词： | 线谱目标 检测方法 信息熵 波达方向估计 |
| 收稿时间： | 2020/6/22 0:00:00 |
| 修稿时间： | 2020/7/21 0:00:00 |
A linear spectrum target detection method based on DOA distribution information entropy weighting |
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| WANG Xuecheng,WANG Lujun,HONG Changwei.A linear spectrum target detection method based on DOA distribution information entropy weighting[J].Technical Acoustics,2021,40(1):117-122. |
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| Authors: | WANG Xuecheng WANG Lujun HONG Changwei |
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| Affiliation: | Science and Technology on Sonar Laboratory, Hangzhou 310012, Zhejiang, China;Hangzhou Applied Acoustics Research Institude, Hangzhou 310012, Zhejiang, China;Science and Technology on Sonar Laboratory, Hangzhou 310012, Zhejiang, China;Military Industry Department, China State Shipbuding Corporation Limited, Beijing 100097, China |
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| Abstract: | In view of the poor performance of conventional wideband energy detection methods for detecting low signal to noise ratio (SNR) line spectrum targets, a linear spectrum target detection method based on target DOA distribution information entropy weighting is proposed in this paper. The detection performance of this method is analyzed through simulation and its effectiveness is verified by the offshore experimental data. The results show that, when the target orientation is relatively stable, this method can effectively detect line spectrum targets with low SNR, and can be applied in the case of multiple line spectrum targets at the same frequency. |
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| Keywords: | line spectrum target detection method information entropy direction of arrival (DOA) estimation |
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