Clutter Suppression Method for Airborne Bistatic Radar with Range Ambiguity Based on Maximum Likelihood Estimation

ZHANG Bai-hua; XIE Wen-chong; WANG Yong-liang; ZHANG Yong-shun

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Clutter Suppression Method for Airborne Bistatic Radar with Range Ambiguity Based on Maximum Likelihood Estimation

更新时间：2025-07-16

- Clutter Suppression Method for Airborne Bistatic Radar with Range Ambiguity Based on Maximum Likelihood Estimation
- Acta Electronica Sinica Vol. 39, Issue 12, Pages: 2836-2841(2011)
- 作者机构：
  
  1. 空军工程大学导弹学院,陕西三原,713800
  2. 空军雷达学院重点实验室,湖北,武汉,430019
  3. 空军工程大学导弹学院陕西三原,713800
  4. 空军雷达学院重点实验室湖北武汉,430019
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957.51
- Published：2011
- 稿件说明：
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ZHANG Bai-hua, XIE Wen-chong, WANG Yong-liang, et al. Clutter Suppression Method for Airborne Bistatic Radar with Range Ambiguity Based on Maximum Likelihood Estimation[J]. Acta Electronica Sinica, 2011, 39(12): 2836-2841.
DOI：

ZHANG Bai-hua, XIE Wen-chong, WANG Yong-liang, et al. Clutter Suppression Method for Airborne Bistatic Radar with Range Ambiguity Based on Maximum Likelihood Estimation[J]. Acta Electronica Sinica, 2011, 39(12): 2836-2841. DOI：

摘要

针对存在距离模糊情况下机载双基地雷达杂波抑制的难题

本文分析了存在距离模糊时机载双基地雷达的杂波特性

提出了一种基于最大似然估计的机载双基地雷达距离模糊杂波抑制方法.该方法首先通过最大似然估计对训练样本所包含的各个模糊距离环的杂波幅度进行估计

然后通过非均匀采样重构待检测距离门及其模糊距离环的杂波数据

再由重构的杂波数据得到待检测距离门的杂波协方差矩阵

最后求得空时自适应处理权值

完成杂波抑制.仿真结果表明该方法具有较好的机载双基地雷达距离模糊杂波抑制性能.

Abstract

In this paper

the clutter characteristics of airborne bistatic radar with range ambiguity are analyzed

and a novel clutter suppression method based on maximum likelihood estimation is proposed.Firstly

the amplitude of various training samples including ambiguous ranges are estimated using maximum likelihood estimation.Secondly

clutter of cell under test (CUT) and the corresponding ambiguous ranges are rebuilt by non-uniform frequency sampling.Thirdly

the clutter covariance matrix of CUT is obtained from the rebuilt clutter data.Finally

clutter suppression is achieved by space-time adaptive processing weight from clutter covariance matrix.The simulation results show that the proposed method is more effective than the traditional method for clutter suppression of airborne bistatic radar with range ambiguity.

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