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Pavel Václavovic

Research & Development Czech Republic

Mr. Pavel Václavovic M.Sc.

Future Forces Forum

Geodetic Observatory Pecný
Research Institute of Geodesy, Topography and Cartography


17 Years of Precise GNSS Tropospheric Products and Services from Geodetic Observatory Pecný

Co-presentation with Mr. Jan DOUŠA

Geodetic Observatory Pecný (GOP) has a long-term experience in developing and estimating precise tropospheric parameters using data from GNSS permanent stations, in particular under the limited timelines of near real time. For more than 17 years, the GOP Zenith Total Delay (ZTD) product has contributed to various projects in Europe (COST-716, TOUGH, E-GVAP, GNSS4SWEC, EUREF, IGS) with over a decade flowing via the meteorological observation exchange network to end users worldwide. Currently, the GOP regional and global ZTD products are routinely assimilated in Météo France and UK MetOffice and exploited in other meteorological institutions. During the period, GOP has extended the list of tropospheric products and activities towards a variety of solutions covering all different temporal, spatial, and qualitative scales. The tropospheric products are thus provided from several regional European networks as well as from a global one. The products update ranges from the re-processing activities to the near real-time and real-time generation. The solutions consist of various parameterizations - standard (ZTD only) and advanced (ZTD, horizontal gradients, slant delays) and uses multi-GNSS data and high-resolution parameter sampling. Our recent activities have focused on the software development. We have installed the in-house GOP-TropNET system (http://www.pecny.cz/Joomla25/index.php/trop-net) at several institutions in support of establishing new E-GVAP analyses centres for near real-time troposphere solutions. We have completed the development of in-house G-Nut/Tefnut software (http://www.pecny.cz/Joomla25/index.php/gnss/sw/tefnut) for real-time troposphere monitoring with support of all GNSS constellations (GPS, GLONASS, Galileo, BeiDou) and all possible parameters (ZTD, troposheric horizontal gradients and slant delays). Finally, we are developing a powerful system, GOP-TropDB (http://www.pecny.cz/Joomla25/index.php/gop-tropdb), for the evaluation of tropospheric parameters gained from different observation techniques which is planned for serving a wide community in the framework of the International GNSS Service (IGS) in future. The presentation will give a summary over these developments and achieved results.

Curriculum Vitae

Pavel Václavovic received his MSc degree in geodesy from the Czech Technical University in Prague. Since 2011, he has been a PhD student there with expecting defense in 2016. Since 2011, he has been working at the Geodetic Observatory Pecný (GOP) of the Research Institute of Geodesy, Topography and Cartography for developing software for high-accuracy GNSS applications. He is interested in precise GNSS data processing, in particular implementing the method of Precise Point Positioning (PPP). His past developments focused on the implementation of various end user applications for geodetic and meteorological purposes. Actually, he is involved in the development of global products for PPP service. At GOP, he is a core contributor to the G-Nut software. He has coordinated the estimation of real-time tropospheric products in the framework of GNSS4SWEC project. He was a research fellow at the Royal Observatory of Belgium, where he studied an optimal modeling of the troposphere anisotropy in the GNSS model. He has published and contributed to 7 scientific papers in high-impact journals. He has been involved in 3 national projects and is contributing to 3 European projects.

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