Frequency-Doppler Domain Wideband Long CPI STAP Method for Multichannel SAR System

CHANG Yu-lin; ZHOU Hong; HUANG Xiao-tao; ZHOU Zhi-min

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Frequency-Doppler Domain Wideband Long CPI STAP Method for Multichannel SAR System

更新时间：2025-07-16

- Frequency-Doppler Domain Wideband Long CPI STAP Method for Multichannel SAR System
- Acta Electronica Sinica Vol. 39, Issue 6, Pages: 1245-1252(2011)
- 作者机构：
  
  国防科学技术大学电子科学与工程学院,湖南,长沙,410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN959.73TN959.1
- Published：2011
- 稿件说明：
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CHANG Yu-lin, ZHOU Hong, HUANG Xiao-tao, et al. Frequency-Doppler Domain Wideband Long CPI STAP Method for Multichannel SAR System[J]. Acta Electronica Sinica, 2011, 39(6): 1245-1252.
DOI：

CHANG Yu-lin, ZHOU Hong, HUANG Xiao-tao, et al. Frequency-Doppler Domain Wideband Long CPI STAP Method for Multichannel SAR System[J]. Acta Electronica Sinica, 2011, 39(6): 1245-1252. DOI：

摘要

在频率-多普勒域

提出了一种适合多通道SAR系统的宽带长CPI(Coherent Processing Intervals) STAP(Space Time Adaptive Processing)方法.该方法突破了传统STAP方法"距离走动不能超过一个距离分辨单元"的限制

能够适应运动目标沿时间维/空间维的跨距离单元走动

从而能够利用长的相干积累时间和长基线

其运动目标检测和速度估计性能远远优于传统的GMTI (Ground Moving Target Indication)方法.

Abstract

A new STAP method is proposed suitable for multi-channel SAR system:the frequency-Doppler domain wideband long CPI STAP method.The introduced method can adapt to the range walk along slow time and space dimension

so it can make use of both long CPI and long baseline.By utilizing the large bandwidth of the SAR system

the proposed method can eliminate the blind speed introduced by long sparse baseline.The introduced method can detect moving targets even with small non-zero range velocities or non-zero azimuth velocities

and can estimate their range and azimuth velocities.

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