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Open AccessArticle

SSIEGNOS: A New Asian Single Site Tropospheric Correction Model

by 1,2, 1,2,*, 1,2,3,*, 1,2, 1,2 and 1,2
1
College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, China
2
Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, China
3
College of Resources and Environment, Qinzhou University, Qinzhou 535011, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Zhao-Liang Li, Jose A. Sobrino, Chao Ren and Wolfgang Kainz
ISPRS Int. J. Geo-Inf. 2017, 6(1), 20; https://doi.org/10.3390/ijgi6010020
Received: 13 August 2016 / Revised: 6 January 2017 / Accepted: 9 January 2017 / Published: 17 January 2017
(This article belongs to the Special Issue Recent Advances in Geodesy & Its Applications)
This paper proposes a new Asian single site tropospheric correction model called the Single Site Improved European Geostationary Navigation Overlay Service model (SSIEGNOS) by refining the European Geostationary Navigation Overlay Service (EGNOS) model at a single site. The performance of the SSIEGNOS model is analyzed. The results show that (1) the bias and root mean square (RMS) error of zenith tropospheric delay (ZTD) calculated from the EGNOS model are 0.12 cm and 5.87 cm, respectively; whereas those of the SSIEGNOS model are 0 cm and 2.52 cm, respectively. (2) The bias and RMS error show seasonal variation in the EGNOS model; however, little seasonal variation is observed in the SSIEGNOS model. (3) The RMS error decreases with increasing altitude or latitude in the two models; however, no such relationships were found in the bias. In addition, the annual predicted bias and RMS error in Asia are −0.08 cm and 3.14 cm for the SSIEGNOS model, respectively; however, the EGNOS and UNB3m (University of New Brunswick) models show comparable predicted results. Relative to the EGNOS model, the annual predicted bias and RMS error decreased by 55% and 48%, respectively, for the SSIEGNOS model. View Full-Text
Keywords: Asia; EGNOS model; SSIEGNOS model; zenith tropospheric delay; accuracy analysis Asia; EGNOS model; SSIEGNOS model; zenith tropospheric delay; accuracy analysis
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Huang, L.; Xie, S.; Liu, L.; Li, J.; Chen, J.; Kang, C. SSIEGNOS: A New Asian Single Site Tropospheric Correction Model. ISPRS Int. J. Geo-Inf. 2017, 6, 20.

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