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应用科学学报 ›› 2009, Vol. 27 ›› Issue (4): 370-374.

• 信号与信息处理 • 上一篇    下一篇

非均匀环境下雷达动目标检测的空时自适应处理

龚清勇 朱兆达   

  1. 南京航空航天大学信息科学与技术学院，南京210016
  • 收稿日期:2008-03-26 修回日期:2009-06-16 出版日期:2009-07-30 发布日期:2009-07-30
  • 作者简介:龚清勇，博士生，研究方向：动目标检测和雷达信号处理，E-mail: gqy_lover@163.com；朱兆达，教授，博导，研究方向：雷达信号检测与处理等，E-mail: zzdee@nuaa.edu.cn
  • 基金资助:
    国家自然科学基金(No.60502030)；航空基金(No.05D52027)资助项目

Space-Time Adaptive Processing for Detection of Moving Radar Target in Heterogeneous Environments

  1. College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics,Nanjing 210016, China
  • Received:2008-03-26 Revised:2009-06-16 Online:2009-07-30 Published:2009-07-30

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1779

被引次数

1

摘要：

 研究一种非均匀环境下地面动目标检测的STAP算法. 该算法将直接数据域内基于正弦曲线幅相估计的检测算法从空域维扩展到空时二维，提高目标回波幅度的估计精度，改善输出信杂噪比，有效地克服了原算法对弱目标检测性能差和虚警率高等缺陷. 仿真结果验证了这种方法的有效性.

关键词:  非均匀, 空时自适应, 目标检测, 正弦曲线幅度相位估计

Abstract:

A moving ground target detection method based on space-time adaptive processing (STAP) is studied in a heterogeneous environment. By extending the amplitude and phase estimation of a sinusoid (APES) method from the space domain to the space-time processing in the direct data domain, this approach improves the accuracy of target amplitude estimation and the output signal-to-clutter-and-noise ratio (SCNR), and overcomes shortcomings of traditional methods such as insensitivity to weak targets and high false alarm probability. Simulation results demonstrate validity of this improved method.

Key words: heterogeneous, space-time adaptive processing (STAP), target detection, amplitude and phase estimation
of a sinusoid（APES）

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