中文摘要：

景象匹配定位是精确制导的重要技术，随着武器系统日益精确化，影响匹配制导精度的匹配区选择得到了广泛的关注。基于景象信息量、稳定性和区域唯一性对景象特征指标进行了分析研究，讨论了各特征参数对匹配性能的影响；给出了由粗到细的分层选取方案，并对特征指标进行了量化；提出了一种由粗到细的分层多尺度匹配区选取方法。实验结果表明该方法具有较大的抗鲁棒性，能够在复杂基准图上有效地选取出满足要求的景象匹配区。

英文摘要：

Scene matching location is an important technique in precision control and guide system. The suitability of the scene matching area is very important in scene matching of the navigation of unmanned vehicle. Make a further study for the scene feature index based on scene information, stability and similarity, and systematically study the parameters which can affect the ability of scene matching. The coarse-to-fine scheme is given,and the feature index is quantified. A hierarchical and multi-scale selection method of matching area is proposed. The experimental results show that this method holds the capability of flexibility and selects the matching areas from complex reference image to satisfy the requirements of the system.