为了提取包含丰富特征信息的特征矢量，本文提出了一种新的特征重叠抽取技术。
A novel method of overlap feature extraction technology is be proposed to pick-up feature vector which has rich information.
同时分别引入了特征重叠特征抽取技术和可控的最优搜索算法之后，定位效果有了进一步的提高。
The performance of localization is improved due to use of overlap feature extraction method and the under-control best search localization algorithm.
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