中文摘要：

区域电离层模型对实现GNSS高精度定位具有重要意义。本文基于SDCORS数据自动处理及分析系统,利用SDCORS双频数据,同时解算总电子含量和差分码偏差,对比分析IAACs最终的差分码偏差、电离层格网产品,并应用于单频精密单点定位。结果表明,卫星差分码偏差、电离层格网产品与CODE结果的一致性最相符,卫星差分码偏差差值在0.15ns内,其它的在0.2ns左右,山东范围内总电子含量差值的RMS值在2.2TECU内,其它的在1.2~5.4TECU;静态PPP单天解的N、E方向偏差20cm,U方向30cm左右。

英文摘要：

Regional Ionospheric Model has a great significant to the implement of the precise point positioning based on single-frequency GNSS.Based on Shandong CORS Data Auto-processing Management and Analysis System,Double-frequency datas were used for calculating Total Electron Content and Differential Code Bias in this paper.the results were contrasted with those made in IAACs and were also applied to Single frequency Precise Point Positioning.The results shows that the Differential Code Bias and Ionospheric grid products consistent with the CODE excellently.The difference of Satellites＇ Differential Code Bias is within 0.15 ns and others is about 0.2ns.The RMS of Total Electron Content difference in Shandong is within 2.2TECU and others is 1.2to 5.4TECU;The static PPP single-day bias is 20 cm in the N and E direction,while about 30 cm in the U direction.