A receiver for the Global Positioning System (GPS) signals provides information on its position and time. The position is given in an Earth-Centered and Earth-Fixed coordinate system. This means that a static receiver keeps its coordinates over time, apart from the influence of measurement errors. The system time (GPST) counts in weeks and seconds of week starting on January 6, 1980. Each week has its own number. Time within a week is counted in seconds from the beginning at midnight between Saturday and Sunday (day 1 of the week). GPST is maintained within the system itself. Universal Time Coordinated (UTC) goes at a different rate which is connected to the actual speed of the rotation of the Earth. At present 14 seconds have to be added to UTC to get GPST.
The GPS has 6 orbital planes with at least 4 satellites. At the moment GPS consists of 29 active satellites. They complete about 2 orbits/day.
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
Anonymous, “An introduction to direct-sequence spread-spectrum communications,” 2003, http://www.maxim-ic.com/appnotes.cfm/appnote_number/1890.
G. Strang and K. Borre, Linear Algebra,Cambridge Press, 1997.
K. Borre, D. Akos, N. Bertelsen, P. Rinder,Geodesy, and GPS. Wellesley, MA: Wellesley-and S. H. Jensen, A Software-Defined GPS and Galileo Receiver: Single-Frequency Approach. Boston Basel Berlin: Birkhäuser, 2006.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer Science+Business Media, LLC
About this paper
Cite this paper
Borre, K. (2008). The Aalborg GPS Software Defined Radio Receiver. In: Re, E.D., Ruggieri, M. (eds) Satellite Communications and Navigation Systems. Signals and Communication Technology. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-47524-0_13
Download citation
DOI: https://doi.org/10.1007/978-0-387-47524-0_13
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-47522-6
Online ISBN: 978-0-387-47524-0
eBook Packages: EngineeringEngineering (R0)