Accuracy Test and Analysis on the Tropospheric Products Derived from GPT3 Model
Abstract We use the tropospheric products of 224 IGS sites with high-precision around the world in 2019 to validate and analyze the accuracy of the zenith tropospheric delay and atmospheric horizontal gradients information estimated by the GPT3 model. The results show that differences appear in spatial and temporal distribution, and the mean bias and root mean square error of zenith tropospheric delay, horizontal gradient in south-north and west-east direction are 0.12 mm/37.2 mm, -0.05 mm/0.49 mm and 0.08 mm/0.57 mm, respectively.
Key words :
GPT3 model
tropospheric delay
atmospheric horizontal gradient
international GNSS service
Cite this article:
YANG Fei,GUO Jiming,LI Yitao et al. Accuracy Test and Analysis on the Tropospheric Products Derived from GPT3 Model[J]. jgg, 2021, 41(11): 1123-1126.
YANG Fei,GUO Jiming,LI Yitao et al. Accuracy Test and Analysis on the Tropospheric Products Derived from GPT3 Model[J]. jgg, 2021, 41(11): 1123-1126.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2021/V41/I11/1123
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