کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1764130 | 1020043 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Galileo orbit and clock quality of the IGS Multi-GNSS Experiment
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
The Multi-GNSS Experiment (MGEX) of the International GNSS Service (IGS) aims at the data collection and analysis of all available satellite navigation systems. In particular the new global and regional satellite navigation systems are of interest, i.e., the European Galileo, the Chinese BeiDou, the Japanese QZSS as well as satellite based augmentation systems. This article analyzes the orbit and clock quality of the Galileo products of four MGEX analysis centers for a common time period of 20Â weeks. Orbit comparisons of the individual analysis centers have a consistency at the 5-30Â cm level. Day boundary discontinuities range from 4 to 28Â cm whereas 2-day orbit fit RMS values vary between 1 and 7Â cm. The accuracy evaluated by satellite laser ranging residuals is on the one decimeter level with a systematic bias of about â5Â cm for all analysis centers. In addition, systematic errors on the decimeter level related to solar radiation pressure mismodeling are present in all orbit products. Due to the correlation of radial orbit errors with the clock parameters, these errors are also visible as a bump in the Allan deviation of the Galileo satellite clocks at the orbital frequency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 55, Issue 1, 1 January 2015, Pages 269-281
Journal: Advances in Space Research - Volume 55, Issue 1, 1 January 2015, Pages 269-281
نویسندگان
Peter Steigenberger, Urs Hugentobler, Sylvain Loyer, Felix Perosanz, Lars Prange, Rolf Dach, Maik Uhlemann, Gerd Gendt, Oliver Montenbruck,