simulation and validation of anti-jamming techniques for gps l1 band of frequency
Abirami.B,
Published in International Journal of Advanced Research in Electronics, Communication & Instrumentation Engineering and Development
ISSN: 2347 -7210 Impact Factor:1.9 Volume:2 Issue:1 Year: 22 March,2016 Pages:38-45
Abstract
The Global positioning system (GPS) is a satellite navigation aiding system which transmits digitally coded data to determine two and three dimensional position fixes at a receiving antenna. It provides high accuracy position, velocity and universal time throughout the world. For this reason control of GPS operability in an interference environment is valuable for both civilian and military applications. The key to achieve precise navigational performance is the processing a weak spread spectrum GPS signal which carries coarse acquisition (C/A) and Precision (P(Y)) digitally coded. The development of several mitigation techniques such as time domain, time-frequency domain approach and adaptive filter techniques are effective only for narrow band interferences. RF lobe steering approach is effective to overcome wideband interference; it increases the complexity and cost of the receiver in mobile platforms. The proposed system Interference rejection unit uses “INTERFERENCE CANCELLER CONTROL ALGORITHM” to overcome both wideband and narrowband interferences. This system is to present a robust GPS receiver which can operate at interference-to-noise ratios 50 dBm.
Kewords
Global positioning system, Interference Rejection Unit, Interference canceller control algorithm, C/A and P code.
Reference
[1].Hui Hu, Na Wei, “A Study of GPS Jamming and Anti-jamming”, 2009 2nd International IEEE Conference on Power Electronics and Intelligent Transportation System [2]. Bradley P. Badke,”Global Positioning System Anti-Jamming Techniques”, Ph.D Dissertation, Arizona State University, 2000 [3] Zoltowski, M.D.; Gecan, A.S.; “Advanced adaptive null steering concepts for GPS” Military Communications Conference, 1995. MILCOM 95, Conference Record, IEEE [4]. Anthony Abbott,” Antijamming and GPS for Critical Military Applications”, aerospace organization NAIC/De Wright-Patterson AFB
