非视距误差改正的超宽带定位模型研究  

Research on ultra-wideband positioning model for non-line-of-sight error correction

作　　者：盛坤鹏 王坚 李晨辉 李孝恭 SHENG Kunpeng;WANG Jian;LI Chenhui;LI Xiaogong(School of Geomatics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 102616,China;School of Geomatics,Liaoning Technical University,Fuxin,Liaoning 123000,China)

机构地区：[1]北京建筑大学测绘与城市空间信息学院,北京102616 [2]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘科学》2021年第3期40-47,共8页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41874029)。

摘　　要：针对超宽带系统在非视距环境下存在定位偏移的问题,该文采集多组距离下的非视距测距值,分析测距误差的变化规律,提出了一种顾及UWB脉冲信号入射角度的建模方法,其主要思想是将测距值假定为斜边,将其拆分成两个直角边,实现测距值由线状数据分析向面状结构的转换,可以较好地描述测距值与测距误差间的函数关系,建立多面函数拟合模型改正测距值实现定位解算。实验结果表明,该方法能够降低测距误差,提高超宽带系统的定位精度。In order to solve the problem of positioning offset in UWB system in non-line-of-sight environment,this paper collected non-line-of-sight ranging values under multiple groups of distance,and analyzed the variation law of ranging error.In this paper,a modeling method considering the incident angle of UWB pulse signal was proposed.The main idea was to assume the ranging value as an oblique edge and divided it into two right angle edges to realize the conversion of the ranging value from linear data analysis to surface structure.It could better describe the functional relationship between the ranging value and the ranging error,and established the multi-surface function fitting model to correct the ranging value to realize the positioning solution.The experimental results showed that this method could reduce the ranging error and improve the positioning accuracy of UWB system.

关 键 词：超宽带 非视距 测距误差 多面函数拟合模型 静态定位 

分 类 号：P228[天文地球—大地测量学与测量工程]