一种UWB协作式定位方法  

A UWB cooperative positioning method

作　　者：欧阳文 蒋理兴[1] 罗豪龙 郑凯 李雪强 OUYANG Wen;JIANG Lixing;LUO Haolong;ZHENG Kai;LI Xueqiang(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450000,China;Troops 61618,Beijing 100080,China)

机构地区：[1]信息工程大学地理空间信息学院,郑州450000 [2]61618部队,北京100080

出　　处：《导航定位学报》2020年第4期20-25,38,共7页Journal of Navigation and Positioning

基　　金：国家重点研发计划项目(2017YFF0206001)。

摘　　要：针对超宽带(UWB)定位过程中,易出现基站距离信息不足无法准确定位的问题,提出1种适用于UWB定位的集中式解算方法:介绍3种UWB定位估计算法并比较其优缺点,然后分析并推导2种定位模型的解算方程,最后提出协作式定位解算策略。实验结果表明,在基站距离信息不足的情况下,采用协作定位模型仍然能解算出坐标,而相比单点定位方法,精度由厘米级下降到分米级。Aiming at the problem that it is liable to inadequate distance information of base stations for UWB positioning,leading to lower location accuracy,the paper proposed a centralized solution method suitable to UWB positioning:three UWB positioning estimation algorithms were comparatively introduced,and two solution equations of location models were analyzed and derived,then the cooperative positioning solution strategy was given finally.Experimental result showed that when the distance information of base stations is not enough,the coordinates could still be calculated by using the proposed method,meanwhile,compared with the single-point positioning method,the accuracy would drop from the centimeter level to the decimeter level.

关 键 词：超宽带 协作定位 到达时间 最大似然估计 定位模型 

分 类 号：P228[天文地球—大地测量学与测量工程]