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GPS signal adaptive interference System

Author: YangFuYu
Tutor: NanJingChang
School: Liaoning Technical University
Course: Communication and Information System
Keywords: Global Positioning System Kalman filter Interweave FPGA ARM RF front-end
CLC: P228.4
Type: Master's thesis
Year: 2009
Downloads: 121
Quote: 0
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Abstract


Global Positioning System (GPS) has a global , all-weather , low-cost , high precision and the error does not accumulate over time , etc., in the civilian and military fields has been widely promoted . Meanwhile, there are also global positioning system signals susceptible to interference , poor dynamic performance , the output frequency is low enough This raises abroad how to improve GPS anti-jamming ability. In this paper, an experimental way through the theoretical model and the actual design of the circuit simulation to validate how to improve anti-jamming capability GPS receiver terminal . Theory , this paper first on the GPS / INS integrated navigation interference research programs , and gives the error model , design Kalman filter , take the speed and position of the error as a state variable . The simulation shows that it has a strong anti-interference ability , in the case of interference was still able to real-time navigation . Subsequently , we propose a new research program that will interweave technology into the GPS anti-jamming , and its principles and the practical application of this system to be analyzed . Finally, the two programs integrated than the right, take reasonable solution for hardware verification. Experiments , taking into account the inertial navigation devices are expensive, discussed only in theory . The actual experiment is to build the RF front-end , ARM FPGA- plus new anti-jamming GPS receiver terminal hardware platform , the interleaving technique embedded programming via FPGA-based soft to the receiving terminal to achieve. Through experimental testing to prove that this is feasible, and can improve the anti-jamming GPS receiver terminal capacity , to achieve the desired effect.

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Geodesy > Satellite geodesy and space geodesy > Global Positioning System (GPS)
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