系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (4): 1040-1048.doi: 10.12305/j.issn.1001-506X.2023.04.13

• 传感器与信号处理 • 上一篇    

机载雷达地面静止目标二维检测算法

孟自强1, 高伟2, 李晓明1,*   

  1. 1. 中国航空工业集团公司雷华电子技术研究所, 江苏 无锡 214063
    2. 西安电子科技大学雷达信号处理国家重点实验室, 陕西 西安 710071
  • 收稿日期:2021-05-31 出版日期:2023-03-29 发布日期:2023-03-28
  • 通讯作者: 李晓明
  • 作者简介:孟自强(1988—), 男, 高级工程师, 博士, 主要研究方向为宽带雷达信号处理、雷达/电子战/通信多功能一体化综合
    高伟(1984—), 男, 高级工程师, 博士, 主要研究方向为雷达目标检测、阵列信号处理
    李晓明(1981—), 男, 研究员, 博士, 主要研究方向为雷达系统设计

Two-dimensional ground stationary target detection algorithm for airborne radar

Ziqiang MENG1, Wei GAO2, Xiaoming LI1,*   

  1. 1. Leihua Electronic Technology Institute, Aviation Industry Corporation of China, Wuxi 214063, China
    2. National Key Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China
  • Received:2021-05-31 Online:2023-03-29 Published:2023-03-28
  • Contact: Xiaoming LI

摘要:

针对机载宽带雷达由于地面目标距离向扩展、距离徙动等现象导致传统检测手段存在检测虚警高、算法适应度低的问题, 提出了一种基于多帧联合的机载雷达地面静止目标二维检测算法。采用“初筛选+精检测”的两步处理思路, 首先在距离压缩和走动校正后提取雷达主杂波数据, 通过广义内积(generalized inner pro-duct, GIP)值计算及排序完成回波数据的初筛选; 随后联合方位多帧设置二维检测窗及检测门限, 完成地面作战目标的快速精细化检测。最后,通过仿真及机载试飞实测数据验证了方法的有效性。该方法能够有效降低检测虚警、提高数据处理效率, 且操作简单、易于实现。

关键词: 机载宽带雷达, 地面静止目标, 目标检测, 广义内积, 多帧联合处理

Abstract:

For airborne wide-band radar, ground target expands in range direction, and range cell migrates in its echo data, which result in such problems as high false alarm and poor adaptability when applying traditional detection methods. This paper presents a two-dimensional ground stationary target detection algorithm for airborne radar based on multi-frame joint processing. This method adopts preliminary selection and accurate detection. Firstly, the radar main clutter data is extracted after range pulse the concept of compression and walk correction. Then, preliminary selection of echo data is achieved through calculation and sort of generalized inner product (GIP). Then, two-dimensional detection window and threshold are configured based on multi-frame joint processing, followed by the fast and fine detection of ground combat target. Finally, the experiments with both simulation and airborne flight test data validate the effectiveness of the proposed algorithm. The proposed algorithm can reduce detection false alarm effectively and improve processing efficiency and it is simple to operate and easy to implement.

Key words: airborne wide-band radar, ground stationary target, target detection, generalized inner product (GIP), joint multi-frame processing

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