破片群测速过程点匹配算法研究

为了解决接触式破片群速度测试方法中多目标匹配问题，在一致点漂移算法的基础上提出了广泛性点匹配算法。该算法首先将点集进行约简；然后利用约简后点集的重要性质，采用多重EM迭代策略求得全局最优解；最后，找到不同测试面中测得的点集一一对应关系。通过仿真分析并与其他算法进行对比，证明提出的算法能够更好的解决破片群测速问题。该算法解决了破片群测试模型中难以将各个破片速度匹配的问题，极大的提高了破片群速度测试精度。

Research on point matching algorithm in fragment group velocity measurement process

In order to solve the problem of multi objective matching in the speed testing method of contact fragment, we proposed a wide point set matching algorithm based on the uniform point drift algorithm. Our algorithm first reduces the point set, and then the global optimal solution is obtained by using multiple EM iterative strategies and the important properties of the reduced points set. Finally, we can find the corresponding relationship of the point set measured in different test surface. Through the simulation analysis and comparison with other algorithms, it is proved that the algorithm proposed in this paper can solve the problem of burst speed.Our algorithm solves the problem that it is difficult to match the speed of each fragment in the fragment test model, which greatly improves the speed test accuracy of the chip group.