双频段多通道SAR宽幅成像技术研究  

A Study on Technology of Wide-swath Imaging for Two Bands and Multi-channels SAR

作　　者：贺彩琴[1] 孟喆[1] 雷万明[1] 刘光焱[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2015年第11期27-31,共5页Modern Radar

摘　　要：现代星载海洋监视雷达既需要高分辨率,又要有大成像幅宽能力。但分辨率和成像幅宽在常规合成孔径雷达成像模式下往往不能同时兼顾。文中分析了二者之间存在矛盾的原因,提出一种能兼顾的双频段多通道解决方案,对其在工程实施中存在的关键技术进行了重点阐述,明确了技术实施途径。通过机载实验试飞,验证了关键技术工程实施的有效性和可行性。Modern spaceborne ocean surveillance radar has the requirements of high resolution and wide-swath imaging functions, but these two features can＇t be addressed at the same time on synthetic apel^ture radar nomlal imaging modes. The reason for this di- lemma is analyzed in this paper,and a solution of two bands and multi-channels to this problem is presented, the key techniques on its engineering realization are described in detail and the implementing methods are proposed. The imaging results of live data by flight test demonstrate the feasibility and validity of these realizable techniques.

关 键 词：高分辨率宽幅 合成孔径雷达 方位模糊 频谱重构 多通道 偏置相位中心天线 

分 类 号：TN957.52[电子电信—信号与信息处理]