%0 Journal Article
%T Removal of Azimuth Ambiguities with Bi-satellite by Multiple Transmitting and Multiple Receiving<br>双星同中心频率多发多收的方位解模糊
%A Jing Wei
%A Xing Meng-dao
%A Bao Zheng
%A <br>井 伟
%A 邢孟道
%A 保 铮
%J 电子与信息学报
%D 2007
%I 
%X To achieve wide-swath and full azimuth resolution in space-borne Synthetic Aperture Radar (SAR), the satellite can take low Pulse Repetition Frequency (PRF) and small aperture in azimuth. Then azimuth ambiguities is inevitable. The constellation of small satellites can be used to remove azimuth ambiguities. In this paper, two satellites fly in a line is used to settle the problem. Both of the satellites transmit a Linear Frequency Modulation (LFM) signal of the same center frequency, but one is positive frequency modulation, the other is negative frequency modulation. The three phase centers resulted from the two satellites can be used to remove three azimuth ambiguities through space-time processing. An innovative method is proposed to simplify the calculating of the filter weight vector. Simulations show the validity of these methods.
%K Distributed micro-satellites
%K Spaceborne synthetic aperture radar
%K Azimuth ambiguity<br>分布式小卫星
%K 星载SAR
%K 方位模糊
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=1ACF54435709034E&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=94C357A881DFC066&sid=E6E6318AC4BCBFDB&eid=FA63B973BAB5E93D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=18