A new Approach for GNSS Analysis in a Multi-GNSS and Multi-Signal Environment
Over the coming years GPS and GLONASS will be modernised, whilst at the same time new systems like QZSS, Galileo, and Compass are launched. The modernisations of the existing and the deployment of new Global Naviagation Satellite Systems (GNSS) will make a whole range of new signals available to the users.
The anticipated improvements will strongly depend on our understanding and handling of the biases that will inevitably exist between the different systems and signals. Furthermore the extremely high stability of the future satellite clocks means, that any form of differencing observations to cancel out the satellite clock offsets, effectively leads to a very significant loss of information.
The fundamentally new aspect of our approach for GNSS analysis in a multi-GNSS and multi-signal environment is that it avoids the formation of differences as well as of linear combinations. Thus all available observations from all GNSS systems as observed by all the receivers in a network are incorporated in the parameter estimation. The fact that all observations are analysed without any pre-selection of observation types, needed for linear combinations or observation differences, leads to an enormous simplification of the processing.
References
Blewitt G., Carrier Phase Ambiguity Resolution for the Global Positioning System Applied to Geodetic Baselines up to 2000 km., Journal of Geophysical Research., 1989, 94, 10187-1020310.1029/JB094iB08p10187Search in Google Scholar
Collins J.P., Lahaye F., Heroux P., Bisnath S., Precise point positioning with ambiguity resolution using the decoupled clock model., Proceedings of the Institute of Navigation International Technical Meeting ION GNSS (16-19 September 2008, Savannah, Georgia, USA), 1315-1322Search in Google Scholar
De Jonge P.J., 1998, A processing strategy for the application of the GPS in networks. PhD thesis, TU Delft, NL10.54419/hcczv9Search in Google Scholar
Defraigne P., Bruyninx C., On the link between GPS pseudorange noise and day-boundary discontinuities in geodetic time transfer solutions., GPS Solutions, 2007, 11(4), 239-24910.1007/s10291-007-0054-zSearch in Google Scholar
Ge M., Gendt G., Rothacher M., Shi C., Liu J., Resolution of GPS carrier-phase ambiguities in Precise Point Positioning (PPP) with daily observations. Journal of Geodesy, 2008, 82(7): 89-399, DOI:10.1007/s00190-007-0187-4.10.1007/s00190-007-0187-4Search in Google Scholar
Griffiths J., Ray J.R., On the precision and accuracy of IGS orbits., Journal of Geodesy, 2009, 83(3-4), 277-287, ISSN 0949-7714. 10.1007/s00190-008-0237-6. http://www.springerlink.com/index/10.1007/s00190-008-0237-610.1007/s00190-008-0237-6Search in Google Scholar
Gurtner W., Estey L., RINEX The Receiver Independent Exchange Format Version 3.00, 2007. http://www.aiub-download.unibe.ch/rinex/rinex300.pdfSearch in Google Scholar
Gurtner W., Estey L., RINEX The Receiver Independent Exchange Format Version 3.01. Technical report, UNAVCO, 2009.Search in Google Scholar
Hegarty C., Powers E., Fonville B., Accounting For Timing Biases Between GPS, and GALILEO Signals Proceedings of the 36th Annual Precise Time and Time Interval (PTTI) Systems and Applications Meeting (7-9 December 2004, Washington, D.C., USA), 307-318 http://www.mitre.org/work/tech.papers/tech.papers.05/05.0341/05.0341.pdfSearch in Google Scholar
Henkel P., Wen Z., Christoph G., Estimation of satellite and receiver biases on multiple Galileo frequencies with a Kalman filter. Proceedings of ION International Technical Meeting (2. January 2010, San Diego, USA) http://www.nav.ei.tum.de/joomla/documents/up/estimation.of.satellite.and.receiver.biases.on.multiple.frequencies.-.itm.2010.pdfSearch in Google Scholar
Hofmann-Wellenhof B., Lichtenegger H., Wasle E., GNSS - Global Navigation Satellite Systems. Springer, 2008. ISBN: 978-3-211-73012-6Search in Google Scholar
Laurichesse D., Mercier F., Berthias J.P., Zero-difference integer ambiguity fixing on single frequency receivers., Proceedings of the 22nd International Technical Meeting of The Satellite Division of the Institute of Navigation (22-25 September 2009, Savannah, GA, USA), 2460-2469Search in Google Scholar
Laurichesse D., Mercier F., Berthias J.-P., Broca P., Cerr L., Integer Ambiguity Resolution on Undifferenced GPS Phase Measurements and its Application to PPP and Satellite Precise Orbit Determination., 2009 Navigation, 56, 135-14910.1002/j.2161-4296.2009.tb01750.xSearch in Google Scholar
Mervat L., 1995, Ambiguity Resolution Techniques in Geodetic and Geodynamic Applications of the Global Positioning System. PhD thesis, Universität Bern, CHSearch in Google Scholar
Montenbruck O., Hauschild A., Erker S., Meurer M., Langley R., Steigenberger P., GPS L5, the real stuff. GPS World, 2010, 21(7), 13-14, ISSN 1048-5104. http://www.gpsworld.com/gnss-system/gps-modernization/news/gps-15-the-real-stuff-10086Search in Google Scholar
Montenbruck O., Hauschild A., Steigenberger P., Langley R.B., Three's the challenge: A close look at gps svn62 triple-frequency signal combinations finds carrier-phase variations on the new l5. GPS World, 2010, 21(8), 8-19. ISSN 1048-5104. http://www.gpsworld.com/gnss-system/gps-modernization/news/threes-challenge-10246Search in Google Scholar
Montenbruck O., Hauschild A., Hessels U., Characterization of GPS/GIOVE sensor stations in the CONGO network. GPS Solutions, August 2010c. ISSN 1080-5370.10.1007/s10291-010-0182-8.10.1007/s10291-010-0182-8Search in Google Scholar
Odijk D., 2002, Fast precise GPS positioning in the presence of ionospheric delays. PhD thesis, TU Delft, NL10.54419/hgkydeSearch in Google Scholar
Phelts R.E., Range Biases on Modernized GNSS Codes., Proceedings of European Navigation Conference GNSS/TimeNav (May 29 - June 1 2007, Geneva, Switzerland). http://waas.stanford.edu/~wwu/papers/gps/PDF/PheltsENC07.pdfSearch in Google Scholar
Schaer S., Differential Code Biases (DCB) in GNSS analysis., Presentation at IGS Workshop (2-6 June 2008, Miami Beach, Florida, USA). http://www.ngs.noaa.gov/IGSWorkshop2008/docs/Schaer.DCB.IGSWS2008.pptSearch in Google Scholar
Schaer S., Dach R., Biases in GNSS analysis., Presented at IGS Workshop (28 June - 2 July 2010, Newcastle upon Tyne, UK). http://acc.igs.org/biases/signal-biases.igsws10.pdfSearch in Google Scholar
Schaer S., 1999, Mapping and Predicting the Earth's Ionosphere using the GPS. PhD thesis, Universität Bern, CH. http://ftp://ftp.unibe.ch/aiub/papers/ionodiss.ps.gzSearch in Google Scholar
Schönemann E., Dilssner F., Svehla D., Springer T., Becker M., Dow J., Zandbergen R., GIOVE - A and B - Precursors of a new era: Signal and clock quality and the achievable orbit accuracy., Presentation at the 2nd International Colloquium - Scientific and Fundamental Aspects of the Galileo Programme, (14 October 2009, University of Padova, Padua, IT)Search in Google Scholar
Spits J. Warnant R., Total electron content monitoring using triple frequency GNSS data: A three-step approach., Journal of Atmospheric and Solar-Terrestrial Physics, 2008, 70, 1885-189310.1016/j.jastp.2008.03.007Search in Google Scholar
Spits J., Warnant R., Total electron content monitoring using triple frequency GNSS: results with GIOVE-A/-B data., Advances in Space Research, 2011, 47, 296-303 ISSN 02731177, DOI: 10.1016/j.asr.2010.08.027.10.1016/j.asr.2010.08.027Search in Google Scholar
Waller P., Gonzalez F., Hahn J., Binda S., Piriz R., Hidalgo I. et al., In-Orbit Performance Assessment of Giove Clocks. Proceedings of 40th Annual Precise Time and Time Interval (PTTI) Meeting (1-4 December 2008, Reston, Virginia, USA), 69-82. http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA503434Search in Google Scholar
Yunck T.P., Coping with the atmosphere and ionosphere in precise satellite and ground positioning. In: A. Valance-Jones, Environmental Effects on Spacecraft Trajectories and Positioning, Geophysical Monograph, 73, American Geophysical Union, Washington, DC, USA.Search in Google Scholar
Zumberge J.F., Watkins M.M., Webb F.H., 1997, Characteristics and Applications of Precise GPS Clock Solutions Every 30 Seconds. Technical report, Jet Propulsion Laboratory, California Institute of Technology. http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/22369/1/97-0852.pdfSearch in Google Scholar
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