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J4  2011, Vol. 45 Issue (9): 1576-1581    DOI: 10.3785/j.issn.1008-973X.2011.09.011
计算机技术﹑电信技术     
基于MMSE-T的合成孔径雷达图像超分辨率重建
朱正为1,2,周建江1
1.南京航空航天大学 信息科学与技术学院,江苏 南京 210016;2.西南科技大学 信息工程学院,四川 绵阳 621010
MMSE-T based super-resolution reconstruction of
synthetic aperture radar image
ZHU Zheng-wei1,2, ZHOU Jian-jiang1
1. College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics,
Nanjing 210016, China;2. School of Information Engineering, Southwest University of Science and Technology,
Mianyang 621010, China
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摘要:

针对雷达目标图像,提出一种基于阈值最小均方误差(MMSE-T)的超分辨率重建方法,并对其性能进行了分析、比较和评估.介绍和分析了雷达成像模型及常用的超分辨方法.以及MMSE-T改进算法及其具体实现方法.以MSTAR合成孔径雷达(SAR)实测图像为例,给出其超分辨结果,同时基于输出信噪比(SNR)指标,对其性能进行了比较与评估.实验表明:MMSE-T超分辨率方法在无须事先已知原始场景先验知识的情况下,可实现对原始场景的准确重建,同时具有较好的噪声抑制作用,可用于高分辨率一维距离像、合成孔径雷达、逆合成孔径雷达及实波束成像等雷达图像目标信息的开发.

Abstract:

A radar image super-resolution reconstruction approach based on thresholded minimum mean-square error (MMSE-T) technique was given, and its super-resolution performance was analyzed, compared and assessed. Radar imaging model and several common super-resolution algorithms were introduced. Then an improved MMSE-T super-resolution algorithm and its realization method were described. The algorithm was demonstrated using MSTAR synthetic aperture rodar (SAR) measured images, and its performance was assessed and compared by the index-the output signal-to-noise ratio (SNR). The experimental results indicate that the MMSE-T approach can accurately reconstruct the original scene without prior knowledge, and has good effect of noise suppression. The method can be applied to exploit target information from the radar images produced by high-resolution range profile, SAR inverse SAR or real beam imaging radar.

出版日期: 2011-09-01
:  TP 391  
基金资助:

中电集团第14研究所院士基金资助项目(2008041001);装备预研重点基金资助项目(N0601-041).

通讯作者: 周建江,男,教授.     E-mail: zjjee@nuaa.edu.cn
作者简介: 朱正为(1973-),男,博士生,从事雷达图像处理及目标识别研究. E-mail: zhuzwin@163.com
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引用本文:

朱正为,周建江. 基于MMSE-T的合成孔径雷达图像超分辨率重建[J]. J4, 2011, 45(9): 1576-1581.

ZHU Zheng-wei, ZHOU Jian-jiang. MMSE-T based super-resolution reconstruction of
synthetic aperture radar image. J4, 2011, 45(9): 1576-1581.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.09.011        https://www.zjujournals.com/eng/CN/Y2011/V45/I9/1576

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