ESPRIT超分辨ISAR成像  

ESPRIT Super Resolution ISAR Imaging

作　　者：吴强[1] 王国林[1] 许荣庆[1] 

机构地区：[1]哈尔滨工业大学电子工程技术研究所

出　　处：《系统工程与电子技术》1999年第7期33-36,共4页Systems Engineering and Electronics

基　　金：国家863高技术计划资助

摘　　要：提高图像分辨率一直是ＩＳＡＲ研究的重要内容，常规的ＩＳＡＲ成像算法在这方面存在着不足。将普遍运用于方向估计中的旋转不变参数估计技术（ＥｓｔｉｍａｔｉｏｎｏｆＳｉｇｎａｌＰａｒａｍｅｔｅｒｖｉａＲｏｔａｔｉｏｎａｌＩｎｖａｒｉａｎｃｅＴｅｃｈｎｉａｑｕｅｓ，ＥＳＰＲＩＴ）与ＩＳＡＲ成像的基本原理相结合，提出了ＥＳＰＲＩＴ超分辨ＩＳＡＲ成像算法。从实验结果看，这种超分辨算法显著提高了图像分辨率。It is always the emphasis to improve the resolution for reconstructing target reflectivity in research of inverse synthetic aperture radar(ISAR)imaging.The conventional ISAR imaging algorithms can not solve the problem effectively.Estimation of signal parameter via rotational invariance techniques(ESPRIT)is combined with the fundamental principles of ISAR which is often used to estimate the direction of arrival(DOA),so ESPRIT super resolution ISAR imaging algorithm is presented in this paper.The results of experiments show that the higher resolution may be obtained by super resolution algorithm.

关 键 词：合成孔径雷达 分辨率 雷达成像 参数估计 ESPRIT 

分 类 号：TN957.52[电子电信—信号与信息处理] TN958[电子电信—信息与通信工程]