On the accuracy of the GPS L2 observable for ionospheric monitoring

On the accuracy of the GPS L2 observable for ionospheric monitoring The introduction of the unencrypted global positioning system (GPS) L2 civil (L2C) signal has the potential to improve measurements made with the L2 frequency, an important observable in GPS-based ionospheric research and monitoring. Recent work has shown significant differences between the legacy L2P(Y) and L2C-derived total electron content rate of change index (ROTI). This difference is observed between L2P(Y) and L2C-derived ROTI with certain receiver models and between zero-baseline receiver pairs. We discuss the likely cause for these differences: L1-aided tracking used to track both the L2P(Y) and L2C signals. We also present L2C data that are confirmed to be from tracking independent of L1. Using the ionospheric-free linear combination, we show that the independently tracked carrier phase dynamics are significantly more accurate than the L1-aided observables. This result is confirmed by comparing the behavior of the L2C and L2P(Y) carrier phase observables upon a sudden antenna rotation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png GPS Solutions Springer Journals

On the accuracy of the GPS L2 observable for ionospheric monitoring

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Earth Sciences; Geophysics/Geodesy; Atmospheric Sciences; Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) ; Automotive Engineering; Electrical Engineering
ISSN
1080-5370
eISSN
1521-1886
D.O.I.
10.1007/s10291-017-0688-4
Publisher site
See Article on Publisher Site

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