NeQuick电离层模型在中国地区的应用  

Application of a new ionospheric model-NeQuick in China

作　　者：王军[1] 党亚民[1] 薛树强[1] 

机构地区：[1]中国测绘科学研究院,北京100039

出　　处：《测绘科学》2007年第4期38-40,共3页Science of Surveying and Mapping

摘　　要：电离层延迟是影响GPS绝对定位精度的主要因素,对单频接收机尤为明显,Galileo系统广播星历拟采用NeQuick模型作为其电离层模型。本文介绍了NeQuick模型及其模型最优化,给出了利用NeQuick模型计算电离层总电子含量(TEC)的方法,利用国内部分观测台链提供的北京和武汉的TEC,并与NeQuick模型所给出的结果进行对比分析,最后给出NeQuick模型在中国地区使用的初步结论。Ionospheric delay is the main source to influence the accuracy of the GPS absolute positioning, especially for the single frequency user. The NeQuick model is the ionospheric model that will be used by the Galileo single frequency user to compute ionospheric corrections. This paper introduces the model and the optimization of the model. The basic method to compute the total electron content (TEC) is given. To obtain TEC over China, the web sites of IGGCAS and NeQuick model are both used. The results of the comparisons are analyzed. At last conclusions about application of NeQuick in China have been summed up.

关 键 词：电离层模型 NeQuick 伽利略系统 

分 类 号：P228[天文地球—大地测量学与测量工程]