Workshop 2018
Rolf Dach - estimating-satellite-antenna-calibration-in-a-multi-gnss-environment - October 29, 2018 • 104 Views
CODE, the Center for Orbit Determination in Europe, is contributing with a consistent five-system solution to the Multi-GNSS Extension (MGEX) of the International GNSS Service (IGS), containing GPS, GLONASS, Galileo, BeiDou, and QZSS since several years. Whereas for Galileo and QZSS the satellite antenna corrections are published by the system providers, the offsets for GPS and GLONASS have been adjusted to the scale of the IGS14 reference frame. Additionally to the offset, the nadir-dependent variations for GPS and GLONASS have been estimated a long time ago and are used within the IGS community. For BeiDou the situation is different. There are several papers on their satellite antenna corrections, which vary between the different studies, and up to now no antenna patterns are provided by the IGS. After numerous orbit modelling updates in CODE’s MGEX (COM) solution implemented during the last year(s), a reprocessing of the COM solution for the last two years was performed. Based on this solution the adjustment of the satellite antenna corrections is revisited. The corrections for the Galileo- and QZSS-satellites could be used as a reference where the uncertainty of the ground receiver antenna calibration for the E5/L5 signals needs to be considered.

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