摘要
城市复杂环境下,由于建筑物的遮挡,卫星定位严重受到非视距信号的影响。测量值随机误差加权模型是卫星定位的关键环节,它能够合理地分配各卫星在解算中所起作用的大小。因此,加权模型常用于缓解非视距信号对卫星定位的影响。本文针对目前主流的多种加权模型进行了系统总结和阐述,比较和分析了城市复杂环境下不同加权模型对卫星动态单点定位的影响。试验结果表明,各加权模型均能够在一定程度上提高定位精度,其中综合加权模型具有最优的性能表现。
In complex urban environment,satellite positioning is seriously affected by non⁃line⁃of⁃sight signals(NLOS)due to the occlusion of buildings.The weighted model of random error of measured value is the key link of satellite positioning,which can reasonably distribute the role of each satellite in the calculation.Therefore,the weighted model is often used to alleviate the influence of NLOS signals on satellite positioning.This paper systematically summarizes and expounds the current mainstream weighted models,and compares and analyzes the influence of different weighting models on satellite dynamic single point positioning(SPP)in the complex urban environment.The experimental results show that all the weighted models can improve the positioning accuracy to a certain extent,and the comprehensive weighted model has the best performance.
作者
付红波
FU Hongbo(Jiangsu Province Surveying and Mapping Engineering Institute,Nanjing 210013,China)
出处
《测绘通报》
CSCD
北大核心
2023年第3期139-143,共5页
Bulletin of Surveying and Mapping
