密集杂波背景下雷达微弱海面目标的修正Hough变换TBD检测新方法

doi:10.12263/DZXB.20201031

电子学报 ›› 2022, Vol. 50 ›› Issue (7): 1735-1743.DOI: 10.12263/DZXB.20201031

密集杂波背景下雷达微弱海面目标的修正Hough变换TBD检测新方法

包中华¹, 卢建斌¹, 田永华², 田树森¹

^1.海军工程大学电子工程学院，湖北武汉 430033
^2.航天科工集团二院二十三所，北京 100854

收稿日期:2020-09-20 修回日期:2021-04-07 出版日期:2022-07-25
- 作者简介:
- 包中华男，1985年出生，安徽庐江人.分别于2005年、2007年和2010年在海军工程大学获得学士、硕士和博士学位.现为海军工程大学电子工程学院讲师.主要研究方向为雷达海面目标检测与识别、X波段导航雷达海态反演技术等.E-mail: baozh_nue@yeah.net
  卢建斌男，1980年出生，河南光山人.博士.海军工程大学电子工程学院副教授.主要研究方向为雷达海面目标检测与识别、相控阵雷达资源调度与优化等.
- 基金资助:
- 国家自然科学基金 (61501486)

A Novel Radar TBD Detection Approach for Weak Marine Targets in Dense Clutter Based on Modified Hough Transform

BAO Zhong-hua¹, LU Jian-bin¹, TIAN Yong-hua², TIAN Shu-sen¹

^1.School of Electronic Engineering, Naval University of Engineering, Wuhan, Hubei 430033, China
^2.The 23th Research Institute of CASIC, Beijing 100854, China

Received:2020-09-20 Revised:2021-04-07 Online:2022-07-25 Published:2022-07-30
- Supported by:
- National Natural Science Foundation of China (61501486)

摘要/Abstract

摘要：

针对密集杂波背景中雷达微弱海面目标检测问题，提出一种基于修正Hough变换的检测前跟踪（Track Before Detect，TBD）新方法.在传统两级检测器的基础上增加点迹筛选环节，提出一种基于单帧观测数据的修正单帧Hough变换（Modified Single Hough Transform，MSHT）算法，在MSHT空间引入连续多帧共线和速度约束条件，实现对密集杂波点迹的有效抑制；针对海面多目标同时检测需要，改进传统批处理Hough变换算法，使观测空间原点自适应筛选后点迹数据，得到数据匹配Hough变换算法（Data-Matched Hough Transform，DMHT），以提升参数空间多目标分辨与检测能力.基于游程分布理论推导得到新检测器检测性能解析表达式.仿真和实测数据处理结果验证了本文方法的有效性，表明本文方法在密集杂波背景下具有良好检测性能.

关键词: 检测前跟踪, Hough变换, 密集杂波, 雷达微弱目标检测

Abstract:

Focusing on radar dim targets detection in dense clutter environment, we propose a novel track-before-detect(TBD) method based on modified Hough transform. On the basis of traditional two-stage TBD detector framework, an additional plot censoring stage was designed and a single frame observation based modified Hough transform(MSHT) was presented. By inspecting the SMHT results over several consecutive scans with the constrains of multi-scan collinear and maximum expected velocity, most of the clutter-derived plots were effectively eliminated. To detect multi targets simultaneously, the traditional block-based Hough transform was improved to be a form named as data-matched Hough transform(DMHT), which automatically adapts the original of the observation space according to the censored plots, and can significantly prompt the resolution and detection ability of multi targets in the parametric space. The analytic expression of the new detector's detection performance was given based on the random run distribution theory. Tests on both the simulated and measured data sets show the effectiveness and good detection performance of the proposed method, especially in dense clutter environments.

Key words: track before detect(TBD), Hough transform, dense clutter, radar weak target detection

中图分类号:

TN953

包中华, 卢建斌, 田永华, 田树森. 密集杂波背景下雷达微弱海面目标的修正Hough变换TBD检测新方法[J]. 电子学报, 2022, 50(7): 1735-1743.

BAO Zhong-hua, LU Jian-bin, TIAN Yong-hua, TIAN Shu-sen. A Novel Radar TBD Detection Approach for Weak Marine Targets in Dense Clutter Based on Modified Hough Transform[J]. Acta Electronica Sinica, 2022, 50(7): 1735-1743.

图/表 14

图1 MHT-TBD方法原理框图

图2 MHT-TBD检测器虚警概率随门限变化关系

图3 MHT-TBD检测器的检测性能(M=3)

图4 不同N,λ和M条件下MHT-TBD检测器性能比较

图5 积累检测周期内预检测输出点迹集仿真结果

图6 基于共线和速度约束后点迹筛选处理结果

图7 自适应Hough变化参数空间积累平滑结果

图8 门限检测与凝聚处理后结果

图9 航迹恢复与点迹提取结果

图10 点迹筛选前后单帧观测杂波点迹密度对比

图11 不同杂波点迹密度下目标航迹正确发现概率

图12 不同杂波点迹密度下点迹提取性能

图13 实测数据原始回波图像

图14 实测数据处理结果

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密集杂波背景下雷达微弱海面目标的修正Hough变换TBD检测新方法

A Novel Radar TBD Detection Approach for Weak Marine Targets in Dense Clutter Based on Modified Hough Transform

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