SIMULATION AND ACQUISITION OF GPS L5 FREQUENCY SIGNAL AND COMPARISON WITH L1 SIGNAL
Abstract
Recent advances in GPS modernization efforts include transmission of L5 frequency signals. This paper emphasizes on the implementation of acquisition techniques for GPS L5 and GPS L1 signals. Both signals have been simulated and analysed in a detailed manner to obtain better acquisition results. In this context the signals have been generated, transmitted, received and acquired by suitable algorithms. Simulations were performed using Borland C++ Builder Compiler and MATLAB softwares. Results reveal that L5 signal offers many advantages, including that the acquisition peaks are more accurate, dominant and wider as compared to L1 signal, thus improving GPS system overall performance. Moreover, L5 signals reduce vulnerability to waveform deformation. Noise levels are also comparatively lower than previous signals.References
James Bao-Yen Tsui,"Fundamentals of Global
Positioning System Receivers", 2nd edition, WileyInterscience (2005).
Spilker & Van Dierendonck 2001, GPS Receivers
in B.Parkinson and J.Spiker, Eds Global
Positioning System Theory and Applications I
American Institute of Aeronautics and Astronautics
(1996).
M.N. Venkatesh Babu and S.K. Lakshmi Narayana,
International Journal of Engineering Research and
Applications (IJERA) 2, No. 4 (2012) 2148.
S. Erker, S. Thölert, J. Furthner and M. Meurer,
German Aerospace Center (DLR), Institute of
Communications and Navigation L5 – The New
GPS Signal (2006).
New L5/E5a Acquisition Algorithms: Analysis and
comparison Daniele Borio, C´ecile Mongr´edien,
G´erard Lachapelle University of Calgary (2003).
Digital GPS Signal Generator for L1 Band, Central
Electronics Engineering Research Institute, Council
of Scientific and Industrial Research Pilani-333031,
India, An International Journal (SIPIJ) 3, No.6
(2012) 72.
Tsui, James Bao-Yen, “Fundamentals of Global
Positioning System Receivers: A Software
approach†John Wiley & Sons, Inc. (2000).
E.D. Kaplan, Understanding GPS Principles and
Application, Artech House Publishers (1996).
Mongrédien, G. Lachapelle and M.E. Testing GPS
L5 Acquisition and Tracking Algorithms Using a
Hardware Simulator C.Cannon Position, location
and Navigation Research group Department of
Geomatics Engineering Schulich school of
Engineering University of Calgary (2004).
P. Rinder, N. Bertelsen, Design of a Single
Frequency GPS Software Receiver, M.Sc Thesis,
Aalborg University (2004).
A Software Defined GPS and Galileo Receiver a
Single Frequency Approach by Kai Bore,
Dennis,Nikolag, Peter, Soren Holt (2007).
Real-Time Dual-Frequency (L1/L5) GPS/WAAS
Software Receiver Yu-Hsuan Chen, Jyh-Ching
Juang, National Cheng Kung University, Taiwan
David S. De Lorenzo, Jiwon Seo, Sherman Lo,
Per Enge, Stanford University, U.S.A. Dennis
M. Akos, University of Colorado Boulder, U.S.A.
S.H. Raghavan, M. Shane and R. Yowell, Spread
Spectrum Codes for GPS L5, The Aerospace Corp.,
P.O. Box 92957, Los Angeles, CA90009-2957310-
GPS L5 Software Receiver Development for HighAccuracy Applications by Cécile Mongrédien May
(2008).