复杂环境下BDS/GPS紧组合高精度定位方法  

High-accurate positioning method of BDS/GPS tight combination under complicated environment

作　　者：隋心[1] 李玉星 沈佳琦 张涵[1] 杨东辉[1] SUI Xin;LI Yuxing;SHEN Jiaqi;ZHANG Han;YANG Donghui(School of Geomatics,Liaoning Technical University,Fuxin,Liaoning 123000,China)

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《导航定位学报》2019年第1期83-87,共5页Journal of Navigation and Positioning

基　　金：国家重点研发计划项目(2016YFC0803102);辽宁省教育厅辽宁省高等学校基本科研项目(LJ2017QL007);大学生创新创业训练计划项目(201710147000190);大学生创新创业训练计划项目(201710147000194)

摘　　要：针对由于在复杂观测环境下每个GNSS系统只能观测到较少的几颗卫星,采用标准双差模型很难实现整周模糊度固定,导致定位精度降低的问题,提出一种紧组合的BDS/GPS系统间双差模型,利用该模型计算出BDS/GPS的系统偏差。实验结果表明复杂环境下BDS/GPS紧组合表现良好,相较于传统的松组合可将定位精度提高20%。Aiming at the problem that it is difficult to fix the ambiguity for the standard double-difference model because each GNSS can observe only a small number of satellites under complicated environment,leading to the low positioning accuracy,the paper proposed a double-difference model of BDS/GPS tight combination to calculate the inter-system bias between BDS and GPS.Experimental result showed that the proposed model could well implement the positioning under complicated environment with a higher 20%improvement of accuracy.

关 键 词：北斗卫星导航系统 全球定位系统 复杂观测环境 紧组合 系统偏差 

分 类 号：P228[天文地球—大地测量学与测量工程]