国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

A composite positioning system is proposed, including roughly positioning and high-precision positioning. The system can realize timely rescue and personnel management by performing real-time monitoring of the location of workers. Due to the constantly change position of the workers, the position information in the process of information collection process has a lag. Then, a huge challenge is brought to fast and continuous positioning. Therefore, a roughly positioning method based on hierarchical clustering is proposed, which predicts the actual position by information fusion and redundant removal of the existing complete data and the possible position of the target. Then, the current existing high-precision positioning equipment is deployed in the range of roughly positioning to achieve high-precise positioning. The simulation results show that the proposed composite positioning system can reduce the positioning range from 15km to 500m, and can achieve 100% topology prediction accuracy.