...密测轨；电离层改正 [gap=530]Key words: ionospheric delay; Satellite Precise Orbit Determination; ionospheric correction ...
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Iono Correction（电离层改正） Ambiguity resolution pass（解算整周未知数阶段的控制） Correction: Iono free/None（改正方法：采用消除电离层延迟的观测...
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电离层折射改正 [地物] ionospheric refraction correction
利用单层电离层改正模型就GPS卫星高度角对测距的影响作了探讨。
The single ionospheric layer correction model is used to delete the effects (l) on GPSranging, and the average ionospheric height is generally used in the calculation.
结论为：（1）实时实地地测量电离层参数并以同一时间尺度对观测数据作电离层改正是评比各种方法的依据。
The main conclusions are: (1) The criteria to compare various methods are that the ionospheric parameters must be measured in real time and position as the observation of individual radio source;
最后把上述多参考站网络电离层误差改正模型应用于VRS技术，对VRS位置的电离层改正数进行实时的模拟和计算。
Finally the above model is applied in VRS technique to generate the local simulated error correction for the user.
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