NeQuick2模型在星载单频GPS实时定轨中的应用  

Application of NeQuick2 in Space-Borne GPS Single-Frequency Real-Time Orbit Determination

作　　者：王甫红[1,2] 王军 郭磊 WANG Fuhong1,2, WANG Jun3, GUO Lei1(1School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;2 Collaborative Innovation Center for Geospatial Technology, 129 Luoyu Road, Wuhan 430079, China; 3 Beijing Unistrong Science ＆ Technology Co Ltd, 10 Jiuxianqiao Road,Beijing 100015,Chin)

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]地球空间信息技术协同创新中心,武汉市珞喻路129号430079 [3]北京合众思壮科技股份有限公司,北京市酒仙桥路10号100015

出　　处：《大地测量与地球动力学》2018年第4期370-373,413,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41374035)~~

摘　　要：在星载单频GPS实时定轨中引入NeQuick2三维电离层延迟改正模型,首先利用GIM对Klobuchar和NeQuick2模型进行精度评估,然后使用不同电离层改正方法模拟仿真星载单频GPS实时定轨实验。结果表明,当卫星轨道低于500km时,相比于传统的改进Klobuchar改正的定轨精度,利用NeQuick2改正的定轨精度提高0.2m左右,与双频伪距法定轨精度相当。In this paper, a three-dimensional ionosphere model-NeQuick2 is introduced. We firstly evaluate the precision of Klobuchar and NeQuick2 using global ionosphere maps and then perform the SADODS simulation experiments in different methods, using different ways to eliminate the influence of ionosphere. The results demonstrate that the orbital accuracies using NeQuick2 are improved by 0.2 m compared to the traditional method using modified Klobuchar.

关 键 词：实时定轨 单频 电离层 NeQuick2 

分 类 号：P228[天文地球—大地测量学与测量工程]