航空学报 > 2022, Vol. 43 Issue (5): 325255-325255   doi: 10.7527/S1000-6893.2021.25255

临近空间伴有尾流高超声速目标检测定位算法

薄钧天, 王国宏, 于洪波, 张翔宇   

  1. 海军航空大学 信息融合研究所, 烟台 264001
  • 收稿日期:2021-01-12 修回日期:2021-02-08 发布日期:2021-02-24
  • 通讯作者: 薄钧天 E-mail:752284662@qq.com
  • 基金资助:
    国家自然科学基金(61731023,61701519,61671462,61971432);山东省自然科学基金(ZR2020MF015)

Algorithm for detecting and positioning hypersonic targets with wakes in near space

BO Juntian, WANG Guohong, YU Hongbo, ZHANG Xiangyu   

  1. Institute of Information Fusion, Naval Aeronautical University, Yantai 264001, China
  • Received:2021-01-12 Revised:2021-02-08 Published:2021-02-24
  • Supported by:
    National Natural Science Foundation of China (61731023,61701519,61671462,61971432); Shandong Provincial Natural Science Foundation (ZR2020MF015)

摘要: 临近空间高超声速目标由于尾迹的产生使雷达散射截面积(RCS)存在突增现象。为解决在此状态下的目标检测及本体定位问题,首先,提出圆台模型模拟尾迹多散射点分布范围,采用密度峰值聚类筛选本体及尾迹量测点;然后,采用修正Hough变换筛选目标航迹,根据运动目标坐标间的数学关系进行本体定位;最后,输出结果。仿真结果显示:算法对2个不同尾迹长度的目标均保持近90%的检测概率,对2个目标全部检测的概率具有近80%的检测概率,且检测概率不随RCS差、尾迹长度和信杂比的变化而产生较大变化,具有一定的应用前景。

关键词: 临近空间, 高超声速目标, 圆台模型, 密度峰值聚类, Hough变换, 扩展散射点

Abstract: The Radar Cross Sectional (RCS) area of hypersonic targets in near space increases suddenly due to the generation of wakes. To solve the problem of target detection and body positioning in this state, a truncated cone model is first proposed to simulate the distribution range of multiple scattering points in the wake. The body and wake measurement points are selected by density peak clustering. Then, a modified Hough transform is used to filter the target track, position the body according to the mathematical relationship between the coordinates of the moving target, and finally output the result. The simulation results show that the algorithm maintains a detection probability of nearly 90% for each of the two targets with different wake lengths and a detection probability of nearly 80% for the both of the each of the two targets, and the detection probability does not change greatly with the changes of RCS, wake length and signal-to-clutter ratio, demonstrating certain application prospects.

Key words: near space, hypersonic target, truncated cone model, density peak clustering, Hough transform, extended scatter point

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