GEO与IGSO卫星星间差分的精密定轨
Precise orbit determination (POD) for the satellites is limited by the geographic distribution of regional tracking stations. Independent time synchronization (TS) system is developed to supplement the regional tracking network, and satellite clock errors and orbit data may be obtained by simultaneously ...
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Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://crea tivecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original ...
由于每个历元最优几何构型的叠加也是最优的,因此几何信息中决定北斗卫星定轨精度的3个影响因子为测站数量,测站覆盖范围和分布密度。理想几何构型条件就是测站数量越多,覆盖范围越广,分布密度越均匀,则式(11) 越小,定轨精度越高。 3 卫星定轨地面测站的离散概率密度 ...
由于每个历元最优几何构型的叠加也是最优的,因此几何信息中决定北斗卫星定轨精度的3个影响因子为测站数量,测站覆盖范围和分布密度。理想几何构型条件就是测站数量越多,覆盖范围越广,分布密度越均匀,则式(11) 越小,定轨精度越高。 3 卫星定轨地面测站的离散概率密度 ...
图1 参与北斗UPD估计的参考站的全球分布图Fig. 1 The distribution of stations to estimate BDS UPDs 图选项 图2给出了北斗GEO, IGSO和MEO卫星2017年1月15日—2017年1月30日的改正伪距偏差前后的WL UPD结果。可以看出, 未改正伪距偏差时, 由于宽巷模糊度中存在与高度角相关的系统偏差, 从而导致估计得到的北斗...
The accuracy of precision orbit determination (OD) for COMPASS using regional and global monitoring stations data are compared to evaluate the impact of monitoring stations' distribution on the accuracy of satellite OD. Satellite Leaser Range (SLR) residuals are adopted to assess the satellite orbit ...
The accuracy of precision orbit determination (OD) for COMPASS using regional and global monitoring stations data are compared to evaluate the impact of monitoring stations' distribution on the accuracy of satellite OD. Satellite Leaser Range (SLR) residuals are adopted to assess the satellite orbit ...
Actually, the MSE of observation equations follows a Chi-square Distribution, and the residual of the pseudo-range follows a Normal Distribution. The MSE values in the normal condition are all in the confidence interval with a 95.44% (2σ) confidence coefficient. The residual of pseudo-range ...