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.
出处
《海洋测绘》
CSCD
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)
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
GPS
regional ionospheric model
grid ionospheric model
ionospheric delay
inter-frequency hardware delay
