| 星载SAR相控阵天线热变形误差分析 |
| |
| 引用本文： | 陈杰,周荫清.星载SAR相控阵天线热变形误差分析[J].北京航空航天大学学报,2004,30(9):839-843. |
| |
| 作者姓名： | 陈杰 周荫清 |
| |
| 作者单位： | 北京航空航天大学 电子信息工程学院, 北京 100083 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)，中国博士后科学基金 |
| |
| 摘 要： | 根据星载SAR相控阵天线结构特点,建立了天线热变形误差的数学模型,定义了阵面不平整度指标.基于成对回波畸变理论,推导了天线阵面存在热变形误差时的方向图函数表达式,导出了单频热变形误差分量与模糊度之间的统计关系,提出了定量分析星载SAR相控阵天线热变形误差对模糊性能影响的有效方法.基于L波段星载SAR天线进行了计算机仿真,验证了分析方法的正确性.
|
| 关 键 词： | 合成孔径雷达 相控阵天线 性能分析 |
| 文章编号： | 1001-5965(2004)09-0839-05 |
| 收稿时间： | 2003-06-04 |
| 修稿时间： | 2003年6月4日 |
Ambiguity performance analysis of spaceborne SAR with thermal mechanism errors in phased array antenna |
| |
| Chen Jie,Zhou Yinqing.Ambiguity performance analysis of spaceborne SAR with thermal mechanism errors in phased array antenna[J].Journal of Beijing University of Aeronautics and Astronautics,2004,30(9):839-843. |
| |
| Authors: | Chen Jie Zhou Yinqing |
| |
| Institution: | School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
| |
| Abstract: | To analyze the ambiguity performance of spaceborne synthetic aperture radar (SAR) with onboard thermal mechanism errors in phased array antenna, a mathematical model for thermal mechanism errors was established, based on the characteristics of spaceborne SAR antenna. The formula of the antenna pattern with thermal mechanism errors were presented, on the basis of paired echo distortion theory. The statistical model for ambiguity performance analysis of thermal mechanism errors in phased array antenna was proposed. The maximum boundary of ambiguity performance requirement was educed. The computer simulation results of a L-band spaceborne SAR was proposed, by which the conclusion was validated. |
| |
| Keywords: | synthetic aperture radar phase array antennas performance analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京航空航天大学学报》浏览原始摘要信息 |
| 点击此处可从《北京航空航天大学学报》下载免费的PDF全文 |
