| 沿航向运动误差对SAR回波特性的影响 |
| |
| 引用本文： | 王彦华,姚迪,曾涛.沿航向运动误差对SAR回波特性的影响[J].北京理工大学学报,2011,31(12):1445-1450. |
| |
| 作者姓名： | 王彦华 姚迪 曾涛 |
| |
| 作者单位： | 北京理工大学信息与电子学院,北京,100081 |
| |
| 基金项目： | 国家自然科学基金资助项目(61001189) |
| |
| 摘 要： | 分析了合成孔径雷达(SAR)平台沿航向运动误差对回波信号时域及频域特性的影响.建立了带有沿航向运动误差的时域回波信号模型,得到了回波时域误差的计算公式;利用级数反转原理,推导了回波频域误差的表达式,为SAR系统分析及成像算法设计提供了理论依据.理论分析和计算机仿真表明,回波频域特征对沿航向运动误差更为敏感.
|
| 关 键 词： | 合成孔径雷达(SAR) 沿航向运动误差 级数反转 |
| 收稿时间： | 2011/1/16 0:00:00 |
Effect of Along-Track Motion Error on SAR Raw Echo |
| |
| WANG Yan-hu,YAO Di and ZENG Tao.Effect of Along-Track Motion Error on SAR Raw Echo[J].Journal of Beijing Institute of Technology(Natural Science Edition),2011,31(12):1445-1450. |
| |
| Authors: | WANG Yan-hu YAO Di and ZENG Tao |
| |
| Affiliation: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | This paper concerns the time and frequency domain analysis of the along-track motion error in synthetic aperture radar (SAR). The signal model with motion error is established. The effects on the range migration and azimuth modulation are obtained. Based on the series reversion laws, the two dimensional point target spectrum is derived. Then, the error features are formulated. Analysis and simulation results show that the echo characteristics in frequency domain are more sensitive to the motion error. Above-mentioned study provides a theoretical basis for system analysis and imaging algorithm design of SAR. |
| |
| Keywords: | synthetic aperture radar (SAR) along track motion error series reversion |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
|
点击此处可从《北京理工大学学报》下载全文 |
|
