| 一种改进的星载聚束SAR子孔径ECS算法 |
| |
| 引用本文： | 曾海彬,曾涛,孟晓东.一种改进的星载聚束SAR子孔径ECS算法[J].电讯技术,2006,46(3):96-99. |
| |
| 作者姓名： | 曾海彬 曾涛 孟晓东 |
| |
| 作者单位： | 北京理工大学,雷达技术研究所,北京,100081;北京跟踪与通信技术研究所,北京,100094;北京理工大学,雷达技术研究所,北京,100081;空军第五研究所,北京,100085 |
| |
| 摘 要： | 在分析原有ECS算法的基础上，提出了一种适合于星栽聚束SAR成像的子孔径ECS算法。该算法对数据进行子孔径划分，可降低系统对PRF及运算存储量的要求。距离压缩采用斜视等效距离模型，实现精确的距离徙动校正。方位压缩采用方位scaling和频谱分析来实现，并分析推导了合理的方位scaling因子取值。最后，通过仿真验证了算法的有效性。
|
| 关 键 词： | 合成孔径雷达 子孔径 聚束式 ECS算法 |
| 文章编号： | 1001-893X（2006）03-0096-04 |
| 收稿时间： | 2005-07-15 |
| 修稿时间： | 2005-07-152005-10-11 |
An Improved Spaceborne Spotlight SAR Sub-aperture ECS Algorithm |
| |
| ZENG Hai-bin,ZENG Tao,MENG Xiao-dong.An Improved Spaceborne Spotlight SAR Sub-aperture ECS Algorithm[J].Telecommunication Engineering,2006,46(3):96-99. |
| |
| Authors: | ZENG Hai-bin ZENG Tao MENG Xiao-dong |
| |
| Affiliation: | 1. Radar Research Lab, Beijing Institute of technology, Beijing 100081 ,China; 2. Beijing Institute of Tracking and Telecommunication Technique, Beijing 100094, China; 3. The 5th Institute of Air Force,Beijing 100085 ,China |
| |
| Abstract: | Based on the analysis of the existing extended chirp scaling(ECS) algorithms,a sub-aperture ECS algorithm is proposed for spaceborne spotlight SAR imaging.The algorithm divides echo-wave data into several sub-apertures data to reduce demands of PRF and memory of system.Squinted equivalent range model is used in range impulse impressing to achieve range migration correction accurately.Azimuth scaling and SPECAN methods are used in azimuth impulse impressing,and rational value of azimuth scaling factor is analyzed.Finally,the validity of the algorithm is testified by computer simulations. |
| |
| Keywords: | synthetic aperture radar(SAR) sub-aperture spotlight ECS algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电讯技术》浏览原始摘要信息 |
|
点击此处可从《电讯技术》下载全文 |
|
