Evaluation of the ZHD tropospheric modelling with VMF1 on DORIS orbits and station coordinates
Adrian Banos Garcia (CLS, France)
Event: 2024 IDS Workshop
Session: Research activities and new applications using DORIS data, or new methods of processing DORIS data
Presentation type: Oral
DOI: 10.24400/312072/i03-2024.3922
Abstract
Due to the correlations between the troposphere zenith delays and the station heights, a sophisticated troposphere model is needed to estimate precise station coordinates using space geodetic data such as GNSS, VLBI and DORIS. A tropospheric model consists of two parts: 1) the tropospheric mapping function to convert the troposphere delay at a certain elevation angle to a zenith delay and 2) an a priori model for the Zenith Hydrostatic Delay (ZHD). Historically, Analysis Centers have preferred the use of the Global Pressure and Temperature (GPT/GPT2) models to model the ZHD due to the ease of use of data, but nowadays, this tendency is shifting towards a more mature, up-to-date VMF1 model. This study tries then to assess the impact of the VMF1 modelling of the ZHD using DORIS data and the reference mission, Sentinel-6, by evaluating the resulting reduced-dynamic orbits and the precise position of the DORIS stations.
Contribution: IDS24_s4_BanosGarcia_ZHDmodelingEvaluation.pdf (pdf, 1179 ko)
Corresponding author:
Adrian Banos Garcia
CLS
France
