Regional Spatio-Temporal Zenith Tropospheric Delay Modeling Using Principal Component Analysis
Abstract A spatio-temporal ZTD modeling method based on principal component analysis (PCA) is proposed. Based on this modeling method, three regional spatio-temporal ZTD models of Hong Kong, Yunnan province and China mainland are established using daily ZTD observation data obtained from the GNSS continuous operation reference stations. The test results show that the accuracy of the regional spatio-temporal ZTD models is significantly higher than that of the Saastamoinen, EGNOS and UNB3m models. Moreover, the proposed PCA spatio-temporal ZTD modeling method has advantages such as simple modeling process, less model parameters and greater convenience.
Key words :
principal component analysis
spatio-temporal model
zenith tropospheric delay
regional tropospheric mode
Cite this article:
YAN Huineng,DAI Wujiao,LIU Bin. Regional Spatio-Temporal Zenith Tropospheric Delay Modeling Using Principal Component Analysis[J]. jgg, 2017, 37(10): 1074-1078.
YAN Huineng,DAI Wujiao,LIU Bin. Regional Spatio-Temporal Zenith Tropospheric Delay Modeling Using Principal Component Analysis[J]. jgg, 2017, 37(10): 1074-1078.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2017/V37/I10/1074
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