Space-Time Adaptive Monopulse Angle Estimation Approach for Airborne Radar Based on Space-Time Joint Constraint

CHEN Gong; XIE Wen-chong; WANG Yong-liang

doi:10.3969/j.issn.0372-2112.2015.03.011

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Space-Time Adaptive Monopulse Angle Estimation Approach for Airborne Radar Based on Space-Time Joint Constraint

更新时间：2025-07-16

- Space-Time Adaptive Monopulse Angle Estimation Approach for Airborne Radar Based on Space-Time Joint Constraint
- Acta Electronica Sinica Vol. 43, Issue 3, Pages: 489-495(2015)
- 作者机构：
  
  1. 空军预警学院,湖北,武汉,430019
  2. 电子信息控制重点实验室,四川,成都,610036
  3. 空军预警学院,湖北,武汉,430019
  4. 电子信息控制重点实验室,四川,成都,610036
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.60925005, No.61102169)
- DOI：10.3969/j.issn.0372-2112.2015.03.011
  CLC： TN959.73
- Published：2015
- 稿件说明：
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CHEN Gong, XIE Wen-chong, WANG Yong-liang. Space-Time Adaptive Monopulse Angle Estimation Approach for Airborne Radar Based on Space-Time Joint Constraint[J]. Acta Electronica Sinica, 2015, 43(3): 489-495.
DOI：

CHEN Gong, XIE Wen-chong, WANG Yong-liang. Space-Time Adaptive Monopulse Angle Estimation Approach for Airborne Radar Based on Space-Time Joint Constraint[J]. Acta Electronica Sinica, 2015, 43(3): 489-495. DOI： 10.3969/j.issn.0372-2112.2015.03.011.

摘要

对现有STAP(Space-Time Adaptive Processing)单脉冲角度估计方法存在单脉冲比失真及目标多普勒失配时角度估计性能严重下降的问题

本文从数学上分析了常规STAP单脉冲方法的失效机理

并基于机载雷达杂波的空时耦合特性

将差波束约束条件扩展到空时二维空间

提出了基于空时联合约束的STAP单脉冲角度估计方法

将单脉冲曲线延伸为单脉冲曲面

通过空时联合约束显著提高了目标角度估计的精度和稳健性.计算机仿真结果验证了本文方法的有效性.

Abstract

Because a monopulse ratio is distorted and a Doppler mismatch may occur

the performance of the existing space-time adaptive monopulse angle estimation is degraded severely.This paper gives mathematical analysis of the failure mechanism of the conventional space-time adaptive monopulse method.In view of the space-time coupling characteristic of airborne radar clutter

this paper expands a constraint for difference beam to a space-time domain.A novel space-time adaptive monopulse angle estimation approach based on the space-time joint constraint is proposed

and a monopulse curve is extended to a monopulse surface.The accuracy and robustness of angle estimation are improved by the space-time joint constraint.Simulation results verify the validity of the novel method.

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