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2014 | OriginalPaper | Buchkapitel

DORIS Tropospheric Estimation at IGN: Current Strategies, GPS Intercomparisons and Perspectives

verfasst von : Pascal Willis, Olivier Bock, Yoaz E. Bar-Sever

Erschienen in: Earth on the Edge: Science for a Sustainable Planet

Verlag: Springer Berlin Heidelberg

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Abstract

We reprocessed DORIS for all of 2010, using the latest model and strategy improvements to estimate Zenith Tropospheric Delays (ZTDs), as well as tropospheric horizontal gradients for about 60 ground stations. These results were compared to recent GPS-based estimates obtained at the Jet Propulsion Laboratory (JPL). After discussing some of the data processing options and current limitations of the DORIS data, we show that the DORIS-GPS comparisons possess a high degree of correlation (average being 0.97), and that total zenith delay estimates from the two techniques agree at the 3 mm level on average with 8.6 mm total RMS, with better results being obtained when a 5° elevation cutoff angle is used for DORIS. While these DORIS results cannot be used for real-time weather prediction, they could contribute to scientific investigations for climatology, thanks to the homogenous tracking network of the DORIS system, as well as the long-term history of the observation time series.

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Metadaten
Titel
DORIS Tropospheric Estimation at IGN: Current Strategies, GPS Intercomparisons and Perspectives
verfasst von
Pascal Willis
Olivier Bock
Yoaz E. Bar-Sever
Copyright-Jahr
2014
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-37222-3_2