Validation of tropospheric slant path delays derived from single and dual frequency GPS receivers

authored by: Zhiguo Deng, Michael Bender, Florian Zus, Maorong Ge, Galina Dick, Markus Ramatschi, Jens Wickert, Ulrich Lhnert, Steffen Schön
Abstract: In order to increase the spatial resolution of tropospheric delays derived from GPS observations, existing GPS networks assembled from dual frequency (DF) receivers must be densified. For economic reasons, low-cost single-frequency (SF) receivers are considered for the densification. The Satellite-specific Epoch-differenced Ionospheric Delay model (SEID) was developed at the German Research Centre for Geosciences (GFZ) to derive the ionospheric corrections for SF GPS receivers. Those corrections allow synthesizing a L2 observable for SF receivers, and existing GPS processing packages can analyze the resulting observables (L1 and synthesized L2) using the same methodology as with DF receivers. The SEID model has already been successfully applied to tropospheric Zenith Total Delay (ZTD) and station coordinates estimation. To assess the possibility of densifying an existing GPS network with low-cost SF GPS receivers, observations from 258 German DF GPS stations are treated as observations from SF GPS stations (only L₁ GPS observations are used). While in a previous study ZTD products were validated, in this study Slant Total Delay (STD) and Slant Water Vapor (SWV) products, derived from SF data and the SEID model, are validated using tropospheric products derived from DF data, a Water Vapor Radiometer (WVR) and a numerical weather model.
Organisation(s): Institute of Geodesy
External Organisation(s): Helmholtz Centre Potsdam - German Research Centre for Geosciences
University of Cologne
Type: Article
Journal: Radio science
Volume: 46
ISSN: 0048-6604
Publication date: 02.12.2011
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Condensed Matter Physics, Earth and Planetary Sciences(all), Electrical and Electronic Engineering
Electronic version(s): https://doi.org/10.1029/2011RS004687 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{be78e955808844988dfa2b4ad87121a1,
title = "Validation of tropospheric slant path delays derived from single and dual frequency GPS receivers",
abstract = "In order to increase the spatial resolution of tropospheric delays derived from GPS observations, existing GPS networks assembled from dual frequency (DF) receivers must be densified. For economic reasons, low-cost single-frequency (SF) receivers are considered for the densification. The Satellite-specific Epoch-differenced Ionospheric Delay model (SEID) was developed at the German Research Centre for Geosciences (GFZ) to derive the ionospheric corrections for SF GPS receivers. Those corrections allow synthesizing a L2 observable for SF receivers, and existing GPS processing packages can analyze the resulting observables (L1 and synthesized L2) using the same methodology as with DF receivers. The SEID model has already been successfully applied to tropospheric Zenith Total Delay (ZTD) and station coordinates estimation. To assess the possibility of densifying an existing GPS network with low-cost SF GPS receivers, observations from 258 German DF GPS stations are treated as observations from SF GPS stations (only L1 GPS observations are used). While in a previous study ZTD products were validated, in this study Slant Total Delay (STD) and Slant Water Vapor (SWV) products, derived from SF data and the SEID model, are validated using tropospheric products derived from DF data, a Water Vapor Radiometer (WVR) and a numerical weather model.",
author = "Zhiguo Deng and Michael Bender and Florian Zus and Maorong Ge and Galina Dick and Markus Ramatschi and Jens Wickert and Ulrich Lhnert and Steffen Sch{\"o}n",
year = "2011",
month = dec,
day = "2",
doi = "10.1029/2011RS004687",
language = "English",
volume = "46",
journal = "Radio science",
issn = "0048-6604",
publisher = "Wiley-Blackwell",
number = "6",
}