基于GPS数据的近海区域电离层建模及其精度评估  

Coastal Regional Ionospheric Modeling Based on GPS Data and Its Accuracy Assessment

作　　者：吴显兵[1,2] 徐天河[1,2] 李施佳[3] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054 [2]西安测绘研究所,陕西西安710054 [3]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《海洋测绘》2015年第3期29-31,42,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41204020)

摘　　要：电离层模型精度严重影响GPS单频用户的定位精度,而海洋区域的电离层建模精度受到布站条件的严重制约。基于日本海周边的GPS观测数据,利用多项式函数进行日本海区域电离层建模,同时对频间硬件延迟进行估计。利用IGS提供的格网模型和频间硬件延迟数据,对所建立的日本海区域电离层模型精度及频间硬件延迟精度进行了评估。The ionospheric model error has a impact on the single frequency application of GPS, but the accuracy of coastal regional ionospheric model is restricted by the distribution of the monitoring stations.The paper utilizes the polynomial function and multi-station data from the costal region to establish regional ionospheric model. Simultaneously, the inter-frequency hardware delay bias is estimated. The grid model data and inter-frequency hardware delay bias data from IGS are used as a reference to assess the precision of regional ionospheric model.

关 键 词：GPS 区域电离层模型 格网模型 电离层延迟 频间硬件延迟偏差 

分 类 号：P228.4[天文地球—大地测量学与测量工程]