Scatterer information based indoor NLOS multiple base station cooperative localization algorithm
In indoor environments, the localization accuracy of existing line of sight (LOS) solutions will deteriorate severely in non-line-of-sight (NLOS) environment.In order to solve this problem, an scatterer information based indoor NLOS multiple base stations cooperative localization algorithm was propo...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2021-05-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021070/ |
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| Summary: | In indoor environments, the localization accuracy of existing line of sight (LOS) solutions will deteriorate severely in non-line-of-sight (NLOS) environment.In order to solve this problem, an scatterer information based indoor NLOS multiple base stations cooperative localization algorithm was proposed, which could realize localization when no LOS path was available.Firstly, the target NLOS area and scatterer blur area were collaboratively determined through multiple AP and joint scene prior information.Secondly, the areas of scatterer were further constrained according to the angle of arrival.Then, an error minimization equation based on the differential time of flight was established by employing angle, scatterer and time.Finally, a hybrid algorithm using genetic algorithm and Levenberg Marquardt algorithm was proposed to solve the objective equation.Simulation and measurement results show that the proposed algorithm can localize the target with only NLOS paths. |
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| ISSN: | 1000-436X |