DocumentCode :
643383
Title :
Acquisition of GPS L1 signals using Cooley-tukey FFT algorithm
Author :
Ratnam, D. Venkat ; Pasha, Ashish ; Swathi, Podila ; Rao, M. Venu Gopala
Author_Institution :
Dept. of ECE, K.L. Univ., Guntur, India
fYear :
2013
fDate :
26-28 Sept. 2013
Firstpage :
1
Lastpage :
4
Abstract :
The development of software based GNSS receivers is being rapidly revolutionized in satellite based navigation applications. In view of commencement of new satellite/ground based navigation systems such as Indian Regional Navigations Systems (IRNSS), GPS Aided Geo Augmented Navigation (GAGAN), China´s COMPAS and pseduolites etc., the receiver technology is to be updated efficiently for high positional accuracy requirements under noisy environments. The main modules of software GPS receiver contain acquisition, tracking and position computations. Among them, acquisition is very important process for identifying satellites, which is based on spread spectrum technology. In this paper, Goertzel and Cooley-tukey FFT GPS acquisition algorithms are implemented for GPS L1 signals. The simulations results indicate that Cooley-tukey FFT GPS acquisition algorithm (Acquisition time: 18.32 seconds) is performed well as compared to the other algorithms.
Keywords :
Global Positioning System; fast Fourier transforms; radio receivers; signal detection; software radio; Cooley-Tukey FFT algorithm; FFT GPS acquisition algorithm; GPS L1 signals; Goertzel acquisition algorithm; acquisition computation; fast Fourier transform; position computation; satellite based navigation; software GPS receiver; software based GNSS receiver; spread spectrum technology; tracking computation; Algorithm design and analysis; Global Positioning System; Receivers; Satellite broadcasting; Satellites; Signal processing algorithms; CDMA; GPS; acquisition; spread spectrum;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing, Computing and Control (ISPCC), 2013 IEEE International Conference on
Conference_Location :
Solan
Print_ISBN :
978-1-4673-6188-0
Type :
conf
DOI :
10.1109/ISPCC.2013.6663397
Filename :
6663397
Link To Document :
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