摘要
景象匹配精度与正确匹配概率是决定组合导航系统精度的重要指标。建立了新的求解图像独立象元数的方法,在进行景像匹配过程的同时由独立象元数、信噪比和相关函数统计值得到匹配精度及正确匹配概率。理论推导和仿真分析表明,本文的景象匹配精度分析方法合理,结果符合工程背景,文中的结论可以用于景象匹配辅助导航系统性能的精确分析。
Scene matching precision and acquisition probability are important indexes for determining precision of integrated navigation system.This paper proposes a new method for calculating the number of independent pixels.Matching precision and acquisition probability are gained through the number of independent pixels,signal noise ratio and the statistic of correlation functions in the process of scene matching.Theoretical analysis and simulation suggest that this method is reasonable and the result conforms to t...
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2007年第6期1698-1703,共6页
Journal of Astronautics
基金
国家自然科学基金资助项目(60572136)
航天支撑技术基金项目(2006-HT-GFKD-02)
关键词
景象匹配
独立象元
匹配精度
正确匹配概率
Scene matching
Independent pixel
Matching precision
Acquisition probability
