Links
NTRIP protocol and RTCM standard
- http://igs.bkg.bund.de/ntrip
- http://igs.bkg.bund.de/ntrip/#rtcm-about
- http://igs.bkg.bund.de/ntrip/ppp
The IGS and the RTIGS pilot project
RTIGS pilot project reports
The CNES/CLS IGS analysis center
Other links
Articles
General papers related to the method :
- D. Laurichesse, F. Mercier, J.P. Berthias, P. Broca, L. Cerri, "Integer Ambiguity Resolution on Undifferenced GPS Phase Measurements and its Application to PPP and Satellite Precise Orbit Determination", Navigation, Journal of the institute of Navigation, Vol. 56, N° 2, Summer 2009
- F. Mercier, D. Laurichesse, "Zero-difference ambiguity blocking, Properties of satellite/receiver widelane biases", Proceedings of the ENC-GNSS 2008, Toulouse, France
Specific application of the method to real-time :
- D. Laurichesse, F. Mercier, J.P. Berthias, J. Bijac, "Real Time Zero-difference Ambiguities Fixing and Absolute RTK", Proceedings of the ION NTM 2008, January 28-30, 2008, San Diego, California
- D. Laurichesse, F. Mercier, J.P. Berthias, " Real Time GPS Constellation and Clocks Estimation using Zero-difference Integer Ambiguity Fixing", Proceedings of the ION ITM 2009, January 2009, Anaheim, California
- D. Laurichesse, F. Mercier, "Real-time PPP with undifferenced integer ambiguity resolution, experimental results", EGU 2010, Vienna
- D. Laurichesse, F. Mercier, J.P. Berthias, " Real Time PPP with undifferenced integer ambiguity resolution, experimental results", Proceedings of the ION GNSS 2010, September 2010, Portland, Oregon
- D. Laurichesse, "The CNES Real-time PPP with undifferenced integer ambiguity resolution demonstrator", Proceedings of the ION GNSS 2011, September 2011, Portland, Oregon
- D. Laurichesse, "Phase biases estimation for integer ambiguity resolution", PPP-RTK & open standards Symposium, March 2012, Portland, Frankfurt am Main
- D.Laurichesse, L. Cerri, J.P. Berthias, F. Mercier, "Real time precise GPS constellation and clocks estimation by means of a Kalman filter", ION GNSS 2013, September 16-20, 2013 - Nashville, Tennessee
- D.Laurichesse, R. Langley, "Handling the Biases for Improved Triple-Frequency PPP Convergence", GPS World, Innovation column, April 2015 issue
- D.Laurichesse, A. Privat, "An Open-source PPP Client Implementation for the CNES PPP-WIZARD Demonstrator", Proceedings of the ION GNSS+ 2015, September 2015, Tampa, Florida
- D.Laurichesse, A. Blot, "Fast PPP convergence using multi-constellations and triple-frequency ambiguity resolution", Proceedings of the IGS Workshop 2016, February 2016, Sydney, Australia
- M. Aubault-Roudier, D. Laurichesse, H. Al Bitar, M. Raimondi, P. Lesage, A. Sfeir, M. Klein, M. Sihrener, N. Ramponi, "Demonstration: E5b Signal Containing Value-Added Information Broadcast in Real Time via the SES ASTRA 5B GEO Satellite" ION GNSS 2016, September 2016, Portland, Oregon
- D.Laurichesse, A. Blot, "Fast PPP convergence using multi-constellation and triple-frequency ambiguity resolution", ION GNSS 2016, September 2016, Portland, Oregon
- D.Laurichesse, S. Banville, "Innovation: Instantaneous centimeter-level multi-frequency precise point positioning", GPS World, July 2018
- C. Gazzino, A. Blot, E. Bernadotte, T. Jayle, M.Laymand, N. Lelarge, A. Lacabanne, D. Laurichesse, "The CNES Solutions for Improving the Positioning Accuracy with Post-Processed Phase Biases, a Snapshot Mode, and High-Frequency Doppler Measurements Embedded in Recent Advances of the PPP-WIZARD Demonstrator", Remote Sensing, 2023, 15, 4231
- C. Gazzino, N. Lelarge, "A Cascading Approach for Multi-frequency Widelanes and Extra-Widelanes Carrier Phase Integer Ambiguity Resolution", ION GNSS 2024, September 2024, Baltimore, Maryland
- C. Gazzino, N. Lelarge, A. Kouraeva, M. Laymand, "Improving the Single Point Positioning Accuracy in a Multi-Frequency Context with the Estimation of the Ionosphere delay", ION GNSS 2024, September 2024, Baltimore, Maryland
Other papers related to zero-difference ambiguity resolution :
- P.Collins, S. Bisnath, F. Lahaye, P. Heroux, "Undifferenced GPS Ambiguity Resolution Using the Decoupled Clock Model and Ambiguity Datum Fixing", Navigation, Journal of the institute of Navigation, Vol. 57, N° 2, 2010
- J. Geng, X. Meng, A. Dodson, F. Teferle, "Integer ambiguity resolution in precise point positioning: method comparison", Journal of Geodesy Volume 84, 569–581, september 2010, DOI 10.1007/s00190-010-0399-x
- M. Ge, G. Gendt, M. Rothacher, C. Shi, J. Liu, "Resolution of GPS carrier-phase ambiguities in precise point positioning (PPP) with daily observations", Journal of Geodesy Volume 82, Number 7, 389-399, DOI: 10.1007/s00190-007-0187-4
- L. Mervart, Z. Lukes, C. Rocken, T. Iwabuchi, "Precise Point Positioning With Ambiguity Resolution In Real-Time", Proceedings of the ION GNSS 2008 Meeting, September 2008, Savannah, Georgia
- W. Bertiger, S. Desai, B. Haines, N. Harvey, A. Moore, S.Owen, J. Weiss, "Single receiver phase ambiguity resolution with GPS data", Journal of Geodesy Volume 84, Number 5, 327-337, DOI:10.1007/s00190-010-0371-9
- D. Laurichesse, White Paper, " Phase biases for ambiguity resolution: from an undifferenced to an uncombined formulation"
Smartphone application :
- A. Blot, D. Laurichesse, C. Rouch , C. Granger, "PPP with external antenna addition on smartphones", ION GNSS+ 2019
Miscellaneous
The CNES web site.
The PPP-WIZARD project is funded by the CNES 'Navigation Civile' project and by several multi-annual internal R&D contracts.
Contact
PPP-WIZARD project, CNES caster: the CNES PPP team
CNES network of stations: REGINA Operation