GPS carrier phase and precise point positioning time scale comparisons using different software packages

authored by: T. Feldmann, A. Bauch, D. Piester, H. Esteban, J. Palacio, F. J. Galindo, T. Gotoh, H. Maeno, U. Weinbach, S. Schön
Abstract: Precise point positioning (PPP) software combines dual frequency code and phase GPS observation data with precise information about the satellite clocks and orbits provided by the International GNSS Service (IGS). It is also a very interesting method for time metrology. Error sources like tropospherical path delay and site displacements have to be modeled or estimated, while the error induced by the first order ionosphere terms can be canceled due to the usage of both GPS frequencies. In case of long baselines the atmospherical effects dominate. Here the physical correction models become important. In this work we compare several precise point positioning (PPP) software packages and study not only the clock solution but also other estimated parameters like positions and zenith tropospheric zenith path delays in order to find the software that is most suitable for time transfer. Especially the repeatability of the position could be a good indicator for quality. We use Dicom GTR50 time and frequency transfer receivers connected to local time scale realizations on baselines with different lengths.
Organisation(s): Institute of Geodesy
External Organisation(s): Japan National Institute of Information and Communications Technology
National Metrology Institute of Germany (PTB)
Spanish Navy Observatory (ROA)
Type: Conference contribution
Pages: 120-125
No. of pages: 6
Publication date: 21.07.2009
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Hardware and Architecture, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
Electronic version(s): https://doi.org/10.1109/FREQ.2009.5168154 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{d8c9ed8f8d134c4fa8154d2c75c3cb25,
title = "GPS carrier phase and precise point positioning time scale comparisons using different software packages",
abstract = "Precise point positioning (PPP) software combines dual frequency code and phase GPS observation data with precise information about the satellite clocks and orbits provided by the International GNSS Service (IGS). It is also a very interesting method for time metrology. Error sources like tropospherical path delay and site displacements have to be modeled or estimated, while the error induced by the first order ionosphere terms can be canceled due to the usage of both GPS frequencies. In case of long baselines the atmospherical effects dominate. Here the physical correction models become important. In this work we compare several precise point positioning (PPP) software packages and study not only the clock solution but also other estimated parameters like positions and zenith tropospheric zenith path delays in order to find the software that is most suitable for time transfer. Especially the repeatability of the position could be a good indicator for quality. We use Dicom GTR50 time and frequency transfer receivers connected to local time scale realizations on baselines with different lengths.",
author = "T. Feldmann and A. Bauch and D. Piester and H. Esteban and J. Palacio and Galindo, {F. J.} and T. Gotoh and H. Maeno and U. Weinbach and S. Sch{\"o}n",
year = "2009",
month = jul,
day = "21",
doi = "10.1109/FREQ.2009.5168154",
language = "English",
isbn = "9781424435104",
series = "Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum",
pages = "120--125",
booktitle = "2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum",
note = "2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum ; Conference date: 20-04-2009 Through 24-04-2009",
}