系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (11): 3428-3436.doi: 10.12305/j.issn.1001-506X.2023.11.08

• 传感器与信号处理 • 上一篇    下一篇

SAR图像辅助的雷达目标距离像检测识别

周剑雄1, 朱永锋1,*, 陈冀1, 吴宏铭2, 吴堃3, 张永杰3   

  1. 1. 国防科技大学电子科学学院, 湖南长沙 410073
    2. 火箭军61基地 96813部队, 安徽黄山 242700
    3. 北京遥感设备研究所, 北京 100854
  • 收稿日期:2022-01-17 出版日期:2023-10-25 发布日期:2023-10-31
  • 通讯作者: 朱永锋
  • 作者简介:周剑雄(1977—), 女, 教授, 博士, 主要研究方向为高分辨雷达成像、目标特性分析与识别
    朱永锋(1979—), 男, 副研究员, 博士, 主要研究方向为雷达波形设计、雷达信号处理、雷达抗干扰与目标识别
    陈冀(1993—), 男, 硕士研究生, 主要研究方向为毫米波主动寻的制导目标检测
    吴宏铭(1993—), 男, 助理工程师, 硕士, 主要研究方向为毫米波主动寻的制导目标识别
    吴堃(1986—)男, 高级工程师, 硕士, 主要研究方向为雷达系统、雷达信号处理
    张永杰(1980—), 男, 研究员, 博士, 主要研究方向为高分辨雷达系统与目标检测识别

HRRP detection and recognition of radar targets based on assistant SAR images

Jianxiong ZHOU1, Yongfeng ZHU1,*, Ji CHEN1, Hongming WU2, Kun WU3, Yongjie ZHANG3   

  1. 1. College of Electronics Science and Technology, National University of Defense Technology, Changsha 410073, China
    2. Unit 96813 of the PLA, Rocket Force Base 61, Huangshan 242700, China
    3. Institute of Beijing Remote Sensing Device, Beijing 100854, China
  • Received:2022-01-17 Online:2023-10-25 Published:2023-10-31
  • Contact: Yongfeng ZHU

摘要:

高分辨距离像在轻小型雷达平台探测识别目标中有重要应用, 准确的目标和环境先验信息是提高距离像检测识别性能的关键因素。本文提出以离线或在线合成孔径雷达(synthetic aperture radar, SAR)图像作为先验信息来源, 提取目标二维散射中心并向距离像视线方向投影获得一维散射中心特征模板, 在此基础上设计了距离像检测、识别以及要害部位选择算法流程, 采用电磁计算和外场实测地面目标数据进行了试验验证。结果表明: SAR图像辅助的距离像检测识别算法不仅具有较高的检测和识别率, 在姿态、频段、分辨力等观测条件变化的情况下也具有较高的稳定性, 具有较好的实用价值。

关键词: 距离像, 目标检测, 目标识别, 合成孔径雷达图像

Abstract:

High resolution range profile (HRRP) has important applications in target detection and recognition in small radar platforms. Accurate target and environment information is a key factor for improving the detection and recognition performance by HRRP. We propose to use the synthetic aperture radar (SAR) images on-line or off-line as prior information, extract 2D scattering centers from the SAR image and project them to the line sight of 1D imaging to obtain the 1D scattering center templates. The detection, recognition and key structure selection algorithms are designed and tested by both electromagnetic simulation and field data of ground targets. Results show that the SAR image based HRRP detection and recognition method has high detection and recognition rate, and has adaptability to varying conditions such as pose, frequency and resolution, which is important in practical applications.

Key words: high resolution range profile, target detection, target recognition, synthetic aperture radar (SAR) image

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