Abstract
The paper introduces a new Wide Area Differential (WADGPS) strategy, based on ‘Orbit Relaxation’. The technique is simpler to implement and less costly to maintain than the conventional WADGPS approach, based on a full dynamical orbit integration. The scheme is best suited for a single large country, such as Brazil, or a continental region, such as Western Europe. It can also be used as an extension of the American WAAS or the European EGNOS. The orbit improvement is achieved by computing corrections to the elements of the mean Keplerian orbit, thus generating a refined broadcast ephemeris, which is transmitted to the users. The paper describes this new approach, in conjunction with recent developments in modelling error components in WADGPS. Results of tests performed at the Institute of Engineering Surveying and Space Geodesy (IESSG), at the University of Nottingham, with both simulated and real data, are presented and discussed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Aquino, M. H. O. (1990). Improving GPS Positioning Accuracies by Orbit Relaxation. M.Phil Thesis, University of Nottingham, UK.
Ashkenazi, V., Chao, C. H. J., Chen, W., Hill, C. J. and Moore, T. (1997). A New High Precision Wide Area DGPS System. Navigation, Journal of The Royal Institute of Navigation, UK, Vol. 50, No 1.
Ashkenazi, V., Moore, T., Whalley, S. and Aquino, M. H. O. (1989). High Precision GPS Positioning by Fiducial Techniques. International Association of Geodesy Symposia, Edinburgh, Scotland.
Chao, C. H. J. (1996). Improved Modelling of High Precision Wide Area Differential GPS. PhD. Thesis, University of Nottingham, UK.
Curley, R. A. (1988). The Use of TI4100 Receivers and MAGNET Software to Determine Height Differences. MSc. Thesis, University of Nottingham, UK.
IESSG and BAE (1992). Wide Area Differential Corrections R&D Study. Project Report, University of Nottingham and British Aerospace (Space Systems)
Kee, C., Parkinson B. W. and Axelrad, P. (1991). Wide Area Differential GPS. Journal of The Institute of Navigation, USA,Vol 38. No 2.
Klobuchar, J. A. (1977). Ionospheric Time Delay Corrections for Advanced Satellite Ranging Systems. Propagation Limitations of Navigation and Positioning Systems, AGARD-CP-209.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Aquino, M.H.O., Ashkenazi, V., Moore, T. (1998). A Continental Wide Area Differential GPS Strategy. In: Brunner, F.K. (eds) Advances in Positioning and Reference Frames. International Association of Geodesy Symposia, vol 118. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-03714-0_15
Download citation
DOI: https://doi.org/10.1007/978-3-662-03714-0_15
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08425-6
Online ISBN: 978-3-662-03714-0
eBook Packages: Springer Book Archive