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d-star-lite-simulation's Introduction

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D* Lite 算法采用典型的动态规划思路实现,对比传统的A*算法,在遇到之前规划中未遇到的障碍物时,需要重新进行路径选择。此时,A*算法需要重新更新所有节点,然后生成路径。而D* Lite 算法避免了对所有节点的重复更新,只对动态障碍物影响区域的节点进行更新,从而提高了效率。

Figure_3

1. The first Version of D* Lite

2. The Second Version of D* Lite

The second version of D* Lite, uses a search method derived from D* to avoid having to reorder the priority queue. The heuristics $h(s, s')$ now need to be nonnegative and forward-backward consistent.

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