电子科技大学学报2012，Vol.41Issue(1)：25-30,6.DOI:10.3969/j.issn.1001-0548.2012.01.005
基于多维编码信号星载MIMO-SAR的回波分离方法
Waveform Diversity Extraction in Spaceborne MIMO-SAR System Based on Multidimensional Waveform Encoding
摘要
Abstract
Spaceborne multi-input multi-output SAR (MIMO-SAR) system combined with multidimensional waveform encoding can obtain wider unambiguous swath width and higher azimuth resolution than traditional spaceborne SAR system. However, the mount of data of waveform diversity extraction method based on traditional digital beam-forming (DBF) techniques is seriously high and the great receive antenna gain loss from topography occurs with the recent presented scan-on-receive (SCORE) technique. A new waveform diversity extraction approach taking advantages of the SCORE technique via sub-array antennas and posterior space time processing (STP) is proposed in this paper. This approach can reduce the high date rate of SAR systems and the receiveing antenna gain loss from topography in the SCORE technique. Furthermore, this approach remains some useful information of multi-channel in elevation for other applications and it is easy to be realized. Simulation results validate the presented approach is better than the waveform diversity extraction method based on the SCORE technique.关键词
数字波束形成/多发多收合成孔径雷达/多维编码信号/SCORE/回波分离Key words
digital beamforming/MIMO-SAR/multidimensional waveform encoding/scan-on-receive/waveform diversity extraction分类
信息技术与安全科学引用本文复制引用
徐伟,邓云凯..基于多维编码信号星载MIMO-SAR的回波分离方法[J].电子科技大学学报,2012,41(1):25-30,6.基金项目
中国科学院青年创新促进会基金 （）
