SAR图像适配区选择方法  

The method for selecting matching area of SAR image

作　　者：任三孩[1] 常文革[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2012年第1期115-122,共8页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(61072116)

摘　　要：为选择具有高匹配概率和高匹配精度特点的SAR适配区,结合SAR成像特点,分析了惯导及成像参数误差对适配区的影响,设计了多种适配性评价参数,提出了一种由粗到细的适配区层次性选择方法。该方法充分考虑了适配区在总体和细节上的需求,层次性选择有效避开了构造预测函数的难题。试验结果表明该方法可在SAR图像匹配系统中选出高性能的适配区,且所选适配区匹配概率可达97%以上。In order to select SAR matching areas with high matching accuracy and matching probability, the current study analyzed the error influence of INS and imaging parameters on the matching area, designed several kinds of rules for suitability analysis, and proposed a coarse-to-fine selecting method. The method fully considers the macroscopic and microcosmic requirements, and keeps it away from the difficulty of constructing predicting functions. Experiment results indicate that the method can select good matching areas in the SAR image matching system, and achieve an over 97% matching probability of the selected matching area.

关 键 词：适配区选择 合成孔径雷达(SAR) 基准图 导航 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]