面向地面运动目标检测的SAR图像分辨率选取

doi:10.3969/j.issn.0255-8297.2012.05.009

应用科学学报 ›› 2012, Vol. 30 ›› Issue (5): 493-497.doi: 10.3969/j.issn.0255-8297.2012.05.009

面向地面运动目标检测的SAR图像分辨率选取

蔚婧1，杨志伟2，李亚安1

1. 西北工业大学航海学院，西安710072
2. 西安电子科技大学雷达信号处理国家重点实验室，西安710071

收稿日期:2011-06-21 修回日期:2011-12-19 出版日期:2012-09-24 发布日期:2012-09-25
通信作者: 蔚婧，博士后，研究方向：地面运动目标检测、阵列信号处理、目标跟踪等，E-mail：yujing@nwpu.edu.cn； E-mail:yujing@nwpu.edu.cn；
作者简介:蔚婧，博士后，研究方向：地面运动目标检测、阵列信号处理、目标跟踪等，E-mail：yujing@nwpu.edu.cn；李亚安：教授，博导，研究方向：智能信号处理、雷达、声呐信号处理，E-mail：liyaan@nwpu.edu.cn
基金资助:
国家自然科学基金（No.51179158）资助

SAR Image Resolution Selection for Ground Moving Target Indication

YU Jing1, YANG Zhi-wei2, LI Ya-an1

1. College of Marine, Northwestern Polytechnical University, Xi’an 710072, China
2. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Received:2011-06-21 Revised:2011-12-19 Online:2012-09-24 Published:2012-09-25

摘要/Abstract

摘要：

在合成孔径雷达地面运动目标检测技术中，SAR图像分辨率的选取直接影响运动目标的检测性能. 为此，该文提出一种适合于运动目标检测的SAR图像分辨率选取方案. 结合感兴趣的目标大小从运动目标检测概率的角度出发，对不同SAR图像分辨率情况下运动目标的检测性能进行分析，以一种具有典型反射截面积的运动目标为例，给出不同目标尺寸条件下的最佳SAR图像分辨率. 该方案可广泛应用于工程实践.

关键词: 地面运动目标检测, 合成孔径雷达, 图像分辨率, 沿航向干涉, 检测概率

Abstract:

In the technique of ground moving target indication using SAR (SAR-GMTI), the image resolution has great impact on the target detection performance. A SAR image resolution selection scheme is proposed in this paper. Performance of target detection at different image resolutions is analyzed in view of the detection probability. Based on the analysis and taking a target with classical RCS as an example, optimal SAR resolution for different target size is given. Simulation results indicate that the scheme can be widely used in engineering practice.

Key words: ground moving target indication (GMTI), synthetic aperture radar (SAR), image resolution, along-track interferometry (ATI), detection probability

中图分类号:

TN95

蔚婧1，杨志伟2，李亚安1. 面向地面运动目标检测的SAR图像分辨率选取[J]. 应用科学学报, 2012, 30(5): 493-497.

YU Jing1, YANG Zhi-wei2, LI Ya-an1. SAR Image Resolution Selection for Ground Moving Target Indication[J]. Journal of Applied Sciences, 2012, 30(5): 493-497.

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面向地面运动目标检测的SAR图像分辨率选取

SAR Image Resolution Selection for Ground Moving Target Indication

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