Group delay variations of GPS transmitting and receiving antennas

Group delay variations of GPS transmitting and receiving antennas GPS code pseudorange measurements exhibit group delay variations at the transmitting and the receiving antenna. We calibrated C1 and P2 delay variations with respect to dual-frequency carrier phase observations and obtained nadir-dependent corrections for 32 satellites of the GPS constellation in early 2015 as well as elevation-dependent corrections for 13 receiving antenna models. The combined delay variations reach up to 1.0 m (3.3 ns) in the ionosphere-free linear combination for specific pairs of satellite and receiving antennas. Applying these corrections to the code measurements improves code/carrier single-frequency precise point positioning, ambiguity fixing based on the Melbourne–Wübbena linear combination, and determination of ionospheric total electron content. It also affects fractional cycle biases and differential code biases. Journal of Geodesy Springer Journals

Group delay variations of GPS transmitting and receiving antennas

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Springer Berlin Heidelberg
Copyright © 2017 by The Author(s)
Earth Sciences; Geophysics/Geodesy; Earth Sciences, general
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