飞行中的阶段中心全球放的系统的错误系统(GPS ) 接收装置天线是为用双频率的 GPS 改进精确轨道决心的精确的主要限制。剩余途径从地面刻度是为 GPS 接收装置天线阶段中心变化(PCV ) 的飞行中的刻度的有效方法之一。在这份报纸,由卫星转菠的 GPS 接收装置天线阶段中心的修正模型列在后面,没有电离层的 PCV 能被减少的动态轨道决心的没有电离层的搬运人阶段 fit 以后剩余直接估计。由重力恢复和气候实验(优雅) 卫星处理的数据,下列结论被得出。第一,从不同时期的没有电离层的搬运人阶段 fit 以后剩余的分布有类似的系统的特征。第二,模拟证明为轨道决心上的没有电离层的 PCV 的阶段剩余评价的影响能到达厘米水平。最后,它被处理那的飞行中的数据显示出当前的时期的阶段剩余评价不能仅仅为过去和当前的时期的 GPS 接收装置天线阶段中心被用于刻度,而且在未来时期被用于没有电离层的 PCV 的预报,并且轨道决心的精确性能很好被改进。
In-flight phase center systematic errors of global positioning system(GPS) receiver antenna are the main restriction for improving the precision of precise orbit determination using dual-frequency GPS.Residual approach is one of the valid methods for in-flight calibration of GPS receiver antenna phase center variations(PCVs) from ground calibration.In this paper,followed by the correction model of spaceborne GPS receiver antenna phase center,ionosphere-free PCVs can be directly estimated by ionosphere-free carrier phase post-fit residuals of reduced dynamic orbit determination.By the data processing of gravity recovery and climate experiment(GRACE) satellites,the following conclusions are drawn.Firstly,the distributions of ionosphere-free carrier phase post-fit residuals from different periods have the similar systematic characteristics.Secondly,simulations show that the influence of phase residual estimations for ionosphere-free PCVs on orbit determination can reach the centimeter level.Finally,it is shown by in-flight data processing that phase residual estimations of current period could not only be used for the calibration for GPS receiver antenna phase center of foretime and current period,but also be used for the forecast of ionosphere-free PCVs in future period,and the accuracy of orbit determination can be well improved.