CALCULATION OF IONOSPHERIC VTEC BY USING SINGLE EPOCHGPS DUAL FREQUENCY CARRIER-PHASE
Lin Jian 1,2,3) ;Wu Yun 1,2) ;Zhou Yiyan 1,2) ;Shi Shunying 1,2) ; and Xing Lelin 1,2)
1)Institute of Seismology, CEA, Wuhan 4300712)Crustal Movement Laboratory , Wuhan 4300713)School of Geodesy and Geomatics,Wuhan University,Wuhan 430079
摘要 探索了一种新的基准站上空垂直电离层电子浓度（vertical total electron content，VTEC）计算方法,即从单历元整周模糊度和双频观测值入手计算VTEC。结果表明：用此方法计算得到的VTEC与IGS（International GNSS Service）提供的VTEC随时间变化趋势一致，且内符合精度良好，能反映电离层活动随时间和纬度的变化规律。
Abstract：A new calculation method of VTEC(Vertical Total Electron Content) of the vertical space above fiducial station is presented, in which the single integer ambiguity and dual frequency observations are directly used to calculate VTEC. The result shows that the change tendency of the calculated VTEC is consistent with the provided data by IGS（International GNSS Service）,and its inner precision is so good that can reflect the ionospheric activity in some extent.
