数字式波束形成在星载双基和多基SAR中的优越性  

Bistatic SAR and Multistatic SAR with Beamforming Technique

作　　者：张直中[1] 

机构地区：[1]南京电子技术研究所,江苏省南京市210013

出　　处：《电子工程师》2007年第9期1-2,9,共3页Electronic Engineer

摘　　要：在单一发收卫星SAR(合成孔径雷达)系统中,地面成像幅宽受天线长度限制,而载荷重量受发射条件的限制,发射大天线的SAR卫星是困难的。因此,将发和收分开成双基SAR,并在接收天线的高度上和/或方位上采用数字波束形成就有明显好处。若采用多接收卫星组合则单星SAR天线可做得很小,有利于降低成本。In a single spaceborne T/R SAR, the unambiguous swath width is limited by the antenna length. By seperating the T and R into two spaceborne SAR and using the technique of digital beamforming, the problem is solved. By using multistatic SAR, the antenna can be very small and much cheaper.

关 键 词：数字波束形成 星载双基SAR 星载多基SAR 多接收卫星SAR 

分 类 号：TN953[电子电信—信号与信息处理]