GOP's Trop-NET system for near real-time troposphere monitoring

GPS meteorology, i.e. routine near real-time ground-based GPS troposphere monitoring, has been well established in Europe during past decades. New challenges, however, occur such as improving temporal and spacial resolutions, monitoring assymetry with use of data from multi-GNSS satellites, more fast estimation and others. Since 1999, GOP has played a key role in establishing of GNSS-meteorology in Europe as well as in developing and introducing precise global GNSS products and advanced tropospheric products. Natuarlly, the origin of the Trop-NET system for NRT tropospheric production based on Bernese GNSS software (BSW) thus comes from the GOP developments of routine GNSS data processing and related servicesin support of scientific applications:

  • ultra-rapid GPS and GLONASS orbit determination (IGS)
  • near real-time GPS regional troposphere monitoring (EGVAP)
  • near real-time GPS+GLONASS regional troposphere monitoring (EGVAP)
  • near real-time GPS global troposphere monitoring (EGVAP)
  • rapid (daily), final (weekly) GPS solution for reference frame (EUREF)
  • homogeneous re-processing of full EUREF permanent network (EUREF)
  • daily/hourly data flow at the local data centre (EUREF).

The Trop-NET package consists of the source code on top of the BSW Bernese Processing Engine, several independent modules and specific processing strategy. These should sopport: a) faciliting an establishment of new analysis centre, b) improving the tropospheric NRT product coverage in Europe (GNSS4SWEC) or worldwide (EGVAP), c) improving the homogeneity of NRT tropospheric estimates (commonly agreed strategy, synchronized updates etc) and, finally d) giving a possibility to share future developments of various modules.

Related publications

  • Dousa J, Vaclavovic P (2015), Evaluation of ground-based GNSS tropospheric products at Geodetic Observatory Pecny, In: IAG Symposia Series, Springer, Vol. 143
  • Douša J, Bennitt GV (2013), Estimation and evaluation of hourly updated global GPS Zenith Total Delays over ten months, GPS Solut, Springer, 17:453–464
  • Douša J. (2012), Developments of the GLONASS ultra-rapid orbit determination at Geodetic Observatory Pecný, In: Geodesy of Planet Earth, S. Kenyon, M.C. Pacino, U. Marti (eds.), IAG Symposia Series, Springer, 136:1029-1036.
  • Douša J (2010), Precise near real-time GNSS analyses at Geodetic observatory Pecný - precise orbit determination and water vapour monitoring, Acta Geodyn Geomater, 7(157), 1-11.
  • Douša J (2010), The impact of errors in predicted GPS orbits on zenith troposphere delay estimation., GPS solut, Springer, 13(3):229-239.
  • Douša J (2004), Precise Orbits for Ground-Based GPS Meteorology: Processing Strategy and Quality Assessment of the Orbits Determined at Geodetic Observatory Pecný, J Met Soc Japan, 82:371-380.
  • Douša J (2003), Evaluation of tropospheric parameters estimated in various routine analysis, Phys Chem Earth, 29(2-3):167-175.
  • Douša J (2002), On the Specific Aspects of Precise Tropospheric Path Delay Estimation in GPS Analysis, In: Vistas for Geodesy in the New Millenium, IAG Symposia series, Adam, J. and K.-P. Schwarz (eds.), Springer, 125:285-290.
  • Douša J (2001), Towards an Operational Near-real Time Precipitable Water Vapor Estimation, Phys Chem Earth, Part A, 26(3):189-194.
  • Douša J (2001), The Impact of Ultra-Rapid Orbits on Precipitable Water Vapor Estimation using Ground GPS Network, Phys Chem Earth, Part A, 26/6-8, pp. 393-398.
  • Douša J, Mervart, L. (2001), On Hourly Orbit Determination, Physics and Chemistry of the Earth, Part A, 26/6-8, pp.555-560.