收稿日期: 2014-12-05
修回日期: 2015-04-24
网络出版日期: 2015-11-15
基金资助
国家自然科学基金(61271422)资助
System parameter estimation for airborne interferometric synthetic aperture radar with three-baseline
Received date: 2014-12-05
Revised date: 2015-04-24
Online published: 2015-11-15
马萌 , 李道京 , 潘舟浩 , 杜剑波 . 机载三基线干涉合成孔径雷达的系统参数估计[J]. 中国科学院大学学报, 2015 , 32(6) : 783 -789 . DOI: 10.7523/j.issn.2095-6134.2015.06.009
This work investigated the parameter estimation problem for airborne interferometric synthetic aperture radar with rigid three-baseline. The considered system parameters are baseline orientation angle and interferometric phase offsets. So the least number of ground control points can be reduced to two. The effect of phase noise on the estimation accuracy is analyzed and a novel method called three-baseline union parameter estimation is proposed. The proposed method employed Newton optimal algorithm to solve the nonlinear estimation equations and used weighting process to deal with elevation accuracy difference of each baseline. Elevation difference between any two baselines is used to evaluate the efficiency of parameter estimation method. Simulation results indicate that the proposed method can obtain higher estimation accuracy than the conventional single baseline parameter estimation method.
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