Abstract
As in restricted areas, in urban areas in particular, the accuracy of the user’s position obtained with satellite navigation systems (SNS), e.g. GPS, may be considerably poorer than in open areas, and in some cases cannot be obtained, other solutions for position fixing must be used. An Assisted-GPS (A–GPS) is now one of these methods – a new technology that uses an assistance server to cut down the time needed to determine a location using GPS (Time To First Fix – TTFF); A–GPS can be used in all SNS today and in the future (GNSS). The principle of this method, and where, when and for whom it can be used is described in this paper.
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
Januszewski, J.: GPS and other satellite navigation systems in urban transport. In: International Conference on Clean, Efficient & Urban Transport, CESURA 2003, Gdansk/Jurata (2003)
Januszewski, J.: Visibility of Satellite Navigation Systems in Urban Area. Artificial Satellites 38(2), 55–65 (2003)
Januszewski, J.: Geometry and Visibility of Satellite Navigation Systems in Restricted Area, Institute of Navigation, National Technical Meeting, San Diego (CA), pp. 827–839 (2005)
Januszewski, J.: Visibility and Geometry of Combined Constellations GPS with Health in Question. In: GLONASS and Galileo, Institute of Navigation, International Technical Meeting, San Diego, CA, pp. 1082–1094 (2010)
Information on GPS navigation..., http://www.gps-practice-and-fun.com
Djuknic, G.M., Richton, R.E.: Geolocation and Assisted GPS. Computer 34(2), 123–125 (2001)
Groves, P.D.: Principles of GNSS, Inertial, and multisensor integrated navigation systems. Artech House, Boston (2008)
Prasad, R., Ruggieri, M.: Applied Satellite Navigation Using GPS, Galileo, and Augmentation Systems. Artech House, Boston (2005)
Van Diggelen, F.: A–GPS, Assisted GPS, GNSS, and SBAS. Artech House, Boston (2009)
Gleason, S., Gebre–Egziabher, D.: GNSS Applications and Methods. Artech House, Boston (2009)
GPS World magazine, http://www.gpsworld.com
British telecommunications company Spirent Communications plc, http://www.spirent.com
Samana, N.: Global Positioning Technologies and Performance. John Wiley & Sons, New Jersey (2008)
Kaplan, E.D., Hegarty, C.J.: Understanding GPS Principles and Applications. Artech House, Boston (2006)
Bryant, R.: Assited GPS, Using Cellular Telephone Networks for GPS Anywhere. GPS World 16(5), 40–45 (2005)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Januszewski, J. (2010). Assisted-GNSS, Why, Where and for Whom?. In: Mikulski, J. (eds) Transport Systems Telematics. TST 2010. Communications in Computer and Information Science, vol 104. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-16472-9_15
Download citation
DOI: https://doi.org/10.1007/978-3-642-16472-9_15
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-16471-2
Online ISBN: 978-3-642-16472-9
eBook Packages: Computer ScienceComputer Science (R0)