中国区域的GNSS电离层模型精度评估  

Precision Evaluation of GNSS Ionospheric Model in the Region of China

作　　者：陈秀德 贾小林[2] 朱永兴[2] 程娜 Chen Xiude Jia Xiaolin Zhu Yongxing Cheng Na(School of Geology Engineering and Geomatics, Chang＇an University, Xi＇an 710054, China Xi＇an Research Institute of Surveying and Mapping, Xi＇an 710054, China Xi＇an Aerospace Data Technology Co. Ltd. , Xi＇an 710100,China)

机构地区：[1]长安大学地质工程与测绘工程学院,陕西西安710054 [2]西安测绘研究所,陕西西安710054 [3]西安航天天绘数据技术有限公司,陕西西安710054

出　　处：《测绘科学与工程》2016年第4期7-12,共6页Geomatics Science and Engineering

摘　　要：电离层延迟是全球导航卫星系统（Global Navigation Satellite System，GNSS）中的主要误差之一，单频用户主要采用广播电离层模型来修正电离层延迟。本文根据中国及其周边区域10个IGS站的观测数据，采用提取不同时刻穿刺点（IPP）天顶方向电离层信息的方法，评估了GPS Klobuchar、北斗Klobuchar、CODE Klobuchar和Galileo NeQuick2四种广播电离层模型在中国及其周边区域的精度，得出了一些有益结论。Ionospheric delay is one of major errors in Global Navigation Satellite System （GNSS） , and single - frequency users mainly use broadcast ionospheric model to revise the delay. Based on observations from China and other 10 IGS stations of sunrounding regions, the precision of broadcast ionospheric models of GPS Klobuchar, BeiDou Klobuchar, CODE Klobuchar, and Galileo NeQuick2 are evaluated by extracting ionospheric information of ionospheric pierce points （IPP） in zenithal direction at different time, and some beneficial conclusions are reached in this paper.

关 键 词：Klobuchar NeQuick 穿刺点 载波相位平滑伪距 

分 类 号：P223[天文地球—大地测量学与测量工程]