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互相关景象匹配系统的正确匹配概率研究
引用本文:张国忠,沈林成,常文森,关世义. 互相关景象匹配系统的正确匹配概率研究[J]. 宇航学报, 2002, 23(1): 30-33
作者姓名:张国忠  沈林成  常文森  关世义
作者单位:1. 国防科技大学机电工程与自动化学院,长沙,410073
2. 航天机电集团公司三院,北京,100074
摘    要:
首先阐述了景象可导航性分析的定义,指出正确匹配概率是评价景象可导航性的重要指标;接着假定预处理后的基准图和附加噪声是零均值随机场。然后从图像的内容性质和其统计特性两个方面出发进行了,给出了基于景象灰度相关匹配的自主导航系统的正确匹配概率的一个估计模型。通过遥感图像的大量试验结果表明:该匹配概率的估计模型优于一般的仿真模型,从而为景象匹配自主导航系统的设计提供理论和应用基础。

关 键 词:景象可导航性分析 景象匹配 正确匹配概率 飞行器 导航系统
文章编号:1000-1328(2002)01-0030-04
修稿时间:2001-04-03

Research on acquisition probability of cross correlation scene matching systems
ZHANG Guo zhong ,SHEN Lin cheng ,CHANG Wen sen ,GUAN Shi yi. Research on acquisition probability of cross correlation scene matching systems[J]. Journal of Astronautics, 2002, 23(1): 30-33
Authors:ZHANG Guo zhong   SHEN Lin cheng   CHANG Wen sen   GUAN Shi yi
Affiliation:ZHANG Guo zhong 1,SHEN Lin cheng 1,CHANG Wen sen 1,GUAN Shi yi 2
Abstract:
The definition of scene navigability is given,and acquisition probability is regarded as an important mark of scene navigability.The preprocessed reference map and additional noise are supposed as independent random field with zero mean.An estimation model of acquisition probability on Cross Correlation Scene Matching Systems is derived by analyzing context and statistical characteristics of reference image.Many experiments with satellite images demonstrate the validity of the proposed acquisition probability model,which provides a theoretical and practical basis for design of self guided systems using scene matching.
Keywords:Scene navigability  Scene matching  Acquisition probability
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