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Research on Acquisition and Tracking Algorithm of GPS C/A Signal under High Dynamic Environment

Author: NiGuangHua
Tutor: TianHongXin
School: Xi'an University of Electronic Science and Technology
Course: Communication and Information System
Keywords: GPS
CLC: P228.4
Type: Master's thesis
Year: 2008
Downloads: 731
Quote: 8
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Abstract


Based on thorough study of the GPS system composition, working principle and signal format on the basis of high dynamic condition C/A code GPS receiver encountered in the design of several key problems were analyzed, and the realization method are studied. The main work is as follows: 1, for A variety of GPS signal capture algorithm to carry on the thorough research and analysis, in view of the high dynamic conditions on the signal capture requirements, proposed based on PMF algorithm C/A code rapid acquisition scheme, and its performance is simulated, 2, this paper introduces the high dynamic environment to adapt to the characteristics of several kinds of signal parameter estimation algorithm, and choose the AFC algorithm tracking loop. The existing carrier assisted DLL code tracking loop algorithm of theoretical research and performance simulation; Puts forward a kind of the fork product automatic frequency tracking ring (CPAFC), overlapping discrete Fourier transform automatic frequency control ring (ODAFC) and Costas phase locked loop (Costas) combination of high dynamic tracking scheme, and use the MATLAB simulation is conducted to examine its performance; 3, in the complete theory on the basis of analysis, initially completed GPS receiver signal tracking module core unit FPGA design and function simulation.

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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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