文献类型：会议

作　　者：王国栋

作者单位：北京交通大学电子信息工程学院电磁兼容实验室

会议文献：2004 4～(th) International Conference on Microwave and Millimeter Wave Technology Proceedings

会议名称：第四届国际微波与毫米波技术会议

会议日期：20040800

会议地点：Beijing,China

主办单位：Chinese Institute of Electronics(CIE)

出版单位：PublisherChineseInstitute...

出版日期：20040800

学会名称：中国电子学会

语　　种：中文

摘　　要：＜正＞In the condition of beam pointing steered spaceborne spotlight Synthetic Aperture Radar （SAR） antenna model and imaging model are found. The math analysis confirms that beam pointing steered results in echo amplitude being modulated and causes infinite pairs of echoes. So beam pointing steered may deteriorate image quality. Besides, based on the analyses of trade-off relation of beam pointing steered ratio, spot area azimuth width and image dynamic extension, the fundamental principle of designing beam pointing steered ratio is presented. Finally, point target simuhtion is given and simulation result tests the validity of theoretical analysis.

关 键 词：Synthetic Aperture Radar  Radar imaging  Image quality  Beam point steering  

分 类 号：TN957.2]