Universität zu Köln

Deng, Zhiguo, Bender, Michael, Zus, Florian, Ge, Maorong, Dick, Galina, Ramatschi, Markus, Wickert, Jens, Loehnert, Ulrich and Schoen, Steffen (2011). Validation of tropospheric slant path delays derived from single and dual frequency GPS receivers. Radio Sci., 46. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1944-799X

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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 L-2 observable for SF receivers, and existing GPS processing packages can analyze the resulting observables (L-1 and synthesized L-2) 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 L-1 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Deng, Zhiguo UNSPECIFIED UNSPECIFIED UNSPECIFIED Bender, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Zus, Florian UNSPECIFIED UNSPECIFIED UNSPECIFIED Ge, Maorong UNSPECIFIED UNSPECIFIED UNSPECIFIED Dick, Galina UNSPECIFIED UNSPECIFIED UNSPECIFIED Ramatschi, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Wickert, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED Loehnert, Ulrich UNSPECIFIED UNSPECIFIED UNSPECIFIED Schoen, Steffen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-483643
DOI:	10.1029/2011RS004687
Journal or Publication Title:	Radio Sci.
Volume:	46
Date:	2011
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	1944-799X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language WATER-VAPOR; PRECIPITABLE WATER; MICROWAVE RADIOMETER; ASSIMILATION; GRADIENTS; NETWORK; MODELS; SYSTEM; IMPACT; AIR Multiple languages Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48364