Optimal Incidence Angle Pair Selection for Dual-aspect Compensation in High Resolution SAR Data
WANG Guo-jun1,2, SHAO Yun1, WAN Zi1,3, ZHANG Feng-li1
1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3. Zhejiang Water Conservancy Estuary Institute, Hangzhou 310020, China
Abstract：In the dual-aspect compensation procedure, the best compensated result occurs under the condition of optimal incidence angle pair, which varies with terrain. Nevettheless, the problem as to how to obtain this pair remains unsolved. To solve this problem, this paper proposes a new method in search for the optimal incidence angle pair based on simulation. Firstly, DEM data are used to produce the layover and shadow mask images at different incidence angles from two different aspect directions respectively. Then from these images, the optimal incidence angle pair was searched out to obtain the best compensating result. On such a basis, the best incidence angle pairs in three areas of different topographic condition for the "dual-aspect compensation" method were given by experiment and the effects were analyzed. The results show that, with this method, the incidence angle pair could be obtained easily and effectively. The method can therefore guide the users to order the best SAR data when they use the dual-aspect compensation in mountainous areas, and this is the essential step in dual-aspect compensation.
王国军, 邵芸, 万紫, 张风丽. 双视向补偿最佳入射角组合研究[J]. 国土资源遥感, 2012, 24(4): 48-54.
WANG Guo-jun, SHAO Yun, WAN Zi, ZHANG Feng-li. Optimal Incidence Angle Pair Selection for Dual-aspect Compensation in High Resolution SAR Data. REMOTE SENSING FOR LAND & RESOURCES, 2012, 24(4): 48-54.
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2012, Vol. 24 
