高技术通讯2024，Vol.34Issue(7)：705-713,9.DOI:10.3772/j.issn.1002-0470.2024.07.004
基于精度因子与距离残差的加权最小二乘算法在DTMB辅助北斗定位中的应用
The weighted least squares algorithm based on precision factor versus distance residue in the application of DTMB assisted BeiDou positioning
摘要
Abstract
The construction of the BDS3(BeiDou Narigation Satellite System 3)has been completed,which can provide more accurate positioning information in open areas.But the BeiDou signal is obscured in the urban canyon area.When the number of BeiDou satellites that can provide effective positioning information gradually decreases,the de-viation of the positioning results obtained by using the BeiDou satellites will gradually increase.In view of the above problems,based on the use of the digital terrestrial multimedia broadcast signal to assist the BeiDou,the weighted least squares algorithm based on the precision factor and the distance residual is used for positioning.Compared with the positioning using the least squares algorithm,its positioning accuracy is improved by about 40％to 50％.The algorithm proposed in this paper is useful for resolving the problem of adding different types of base stations to the auxiliary positioning when the number of base stations is insufficient.关键词
改进的加权最小二乘算法/精度因子/距离残差/辅助定位Key words
improved weighted least squares algorithm/precision factor/distance residual/auxiliary localization引用本文复制引用
李旋,杨海效,李济源,翟悦峰,吴虹..基于精度因子与距离残差的加权最小二乘算法在DTMB辅助北斗定位中的应用[J].高技术通讯,2024,34(7):705-713,9.基金项目
国家自然科学基金面上项目(61571244)和国家自然科学基金联合基金(U2031208)资助项目. （61571244）
