| SAR目标属性散射中心特征提取与分析 |
| |
| 引用本文： | 张静克,计科峰,邢相薇. SAR目标属性散射中心特征提取与分析[J]. 雷达科学与技术, 2011, 9(3): 207-212 |
| |
| 作者姓名： | 张静克 计科峰 邢相薇 |
| |
| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙,410073 |
| |
| 摘 要： | 散射中心是高频区雷达目标电磁散射的基本特征,对SAR图像解译、目标识别等具有重要意义。与经典的理想点散射中心模型相比,属性散射中心模型通过引入散射响应对频率、方位角的依赖因子,可更精确地建模高分辨SAR图像目标的散射特性,但与此同时,由于特征参数的维数更高,因此相应的特征提取方法也更复杂。提出了一种基于CLEAN思想的图像域区域解耦合的近似最大似然估计(RD-AML-CLEAN)高分辨SAR图像目标属性散射中心特征提取方法,并通过仿真SAR图像数据的实验结果对算法性能进行了定性、定量的分析与评估。
|
| 关 键 词： | 高分辨SAR图像 属性散射中心模型 特征提取 克拉美罗界 |
Feature Extraction and Analysis of Attributed Scattering Centers on SAR Targets |
| |
| ZHANG Jing-ke,JI Ke-feng,XING Xiang-wei. Feature Extraction and Analysis of Attributed Scattering Centers on SAR Targets[J]. Radar Science and Technology, 2011, 9(3): 207-212 |
| |
| Authors: | ZHANG Jing-ke JI Ke-feng XING Xiang-wei |
| |
| Affiliation: | ZHANG Jing-ke,JI Ke-feng,XING Xiang-wei(School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
| |
| Abstract: | Scattering center is the essential electromagnetic scattering characteristic of the radar targets in high frequency region,which is of great importance for SAR imagery interpretation and target recognition.Compared with classical ideal point scattering center model,attributed scattering center model is more accurate in modeling the scattering characteristic of the high resolution SAR imagery targets.However,because of its high dimensionality,the method of attributed scattering center extraction is more comp... |
| |
| Keywords: | high resolution SAR imagery attributed scattering center model feature extraction Cramer-Rao bound |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《雷达科学与技术》浏览原始摘要信息 |
|
点击此处可从《雷达科学与技术》下载全文 |
|
