Precise Point Positioning Technique with IGS Real-Time Service (RTS) for Maritime Applications

DOI: 10.4236/pos.2015.64008   PDF   HTML   XML   4,039 Downloads   5,379 Views   Citations


The maritime navigation accuracy requirements for radionavigation systems such as GPS are specified by the International Maritime Organization (IMO). Maritime navigation usually consists of three major phases identified as Ocean/Coastal/Port approach/Inland waterway, in port navigation and automatic docking with an accuracy requirement that ranges from 10 m to 0.1 m. With the advancement in autonomous GPS positioning techniques such as Precise Point Positioning (PPP) and with the advent of the new IGS-Real-Time-Service (RTS), it is necessary to assess the possibility of a wider role of the PPP-based positioning technique in maritime applications. This paper investigates the performance of an autonomous real-time PPP-positioning solution by using the IGS- RTS service for maritime applications that require an accurate positioning system. To examine the performance of the real-time IGS-RTS PPP-based technique for maritime applications, kinematic data from a dual frequency GPS receiver is investigated. It is shown that the real-time IGS-RTS PPP-based GPS positioning technique fulfills IMO requirements for maritime applications with an accuracy requirement ranges from 10 m for Ocean/Coastal/Port approach/Inland waterways navigation to 1.0 m for in port navigation but cannot fulfill the automatic docking application with an accuracy requirement of 0.10 m. To further investigate the real-time PPP-based GPS positioning technique, a comparison is made between the real-time IGS-RTS PPP-based positioning technique and the real-time PPP-based positioning by using the predicted part of the IGS Ultra-Rapid products and the real-time GPS positioning technique with the Wide Area Differential GPS service (WADGPS). It is shown that the IGS-RTS PPP-based positioning technique is superior to the IGS-Ultra-Rapid PPP-based and WADGPS-based positioning techniques.

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El-Diasty, M. and Elsobeiey, M. (2015) Precise Point Positioning Technique with IGS Real-Time Service (RTS) for Maritime Applications. Positioning, 6, 71-80. doi: 10.4236/pos.2015.64008.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] IMO Resolution A.915(22) (2002) Revised Maritime Policy and Requirements for a Future GNSS. Adopted on January 22nd, 2002, London.
[2] IMO Resolution A.953(23) (2004) Revised World-Wide Radionavigation System. Adopted on February 26th, 2004, London.
[3] Parkins, A. (2009) Performance of Precise Marine Positioning Using Future Modernised Global Satellite Positioning Systems and a Novel Partial Ambiguity Resolution Technique. PhD Thesis, Department of Civil, Environmental and Geomatic Engineering, UCL, London, United Kingdom.
[4] El-Diasty, M. (2010) Development of a MEMS-Based INS/GPS Vessel Navigation System for Marine Applications. PhD Dissertation, Publication Number NR64919, York University, Toronto.
[5] Moore, T., Hill, C. and Monteiro, L. (2001) Is DGPS Still a Good Option for Mariners? The Journal of Navigation, 54, 437-446.
[6] Fairbanks, M., Ward, N., Roberts, W., Dumville, M. and Ashkenazi, V. (2004) GNSS Augmentation Systems in the Maritime Sector. ION NTM, San Diego, 26-28 January 2004, 662-673.
[7] Moore, T., Hill, C., Norris, A., Hide, C., Park, D. and Ward, N. (2008) The Potential Impact of GNSS/INS Integration on Maritime Navigation. The Journal of Navigation, 61, 221-237.
[8] Elsobeiey, M. and Al-Harbi, S. (2015) Performance of Real-Time Precise Point Positioning Using IGS Real-Time Service. GPS Solutions, 1-7
[9] Grinter, T. and Roberts, C. (2013) Real Time Precise Point Positioning: Are We There Yet? IGNSS Symposium, Outrigger Gold Coast, 16-18 July 2013, Paper 8.
[10] Rho, H. and Langley, R. (2005) Dual-Frequency GPS Precise Point Positioning with WADGPS Corrections. ION GNSS 2005, Long Beach, 13-16 September 2005, 1470-1482.
[11] Kouba, J. and Heroux, P. (2001) Precise Point Positioning Using IGS Orbit Products. GPS Solutions, 5, 12-28.
[12] Yigit, C.O., Gikas, V., Alcay, S. and Ceylan, A. (2013) Performance Evaluation of Short to Long Term GPS, GLONASS and GPS/GLONASS Post-Processed PPP. Survey Review, 46, 155-166.
[13] Rizos, C., Janssen, V., Roberts, C. and Grinter, T. (2012) GNSS: Precise Point Positioning PPP versus DGNSS. Geomatics World (October), 18-20.
[14] El-Mowafy, A. (2011) Analysis of Web-Based GNSS Post-Processing Services for Static and Kinematic Positioning Using Short Data Spans. Survey Review, 43, 535-549.
[15] IGS (2015) IGS Real-Time Service.
[16] Leick, A. (2004) GPS Satellite Surveying. 2nd Edition, John Wiley & Sons, Hoboken.
[17] Hofmann-Wellenhof, B., Lichtenegger, H. and Walse, E. (2008) GNSS Global Navigation Satellite Systems; GPS, Glonass, Galileo & More. Springer Wien, New York.
[18] Laurichesse, D., Mercier, F., Berthias, J.P., Broca, P. and Cerri, L. (2009) 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, 56, 135-149.
[19] Leandro, R.F. (2009) Precise Point Positioning with GPS: A New Approach for Positioning, Atmospheric Studies, and Signal Analysis. PhD Thesis, Technical Report No. 267, University of New Brunswick, Fredericton, 232 p.
[20] Martín, A., Anquela, A., Berné, J. and Sanmartin, M. (2005) Kinematic GNSS-PPP Results from Various Software Packages and Raw Data Configurations. Scientific Research and Essays, 7, 419-431.

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