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Research on Baseband Signal Processing Technology of Satellite Navigation Receivers

Author: GongYang
Tutor: SongPeng
School: North China University of
Course: Circuits and Systems
Keywords: Capture Circular correlation FFT Track High dynamic
CLC: TN967.1
Type: Master's thesis
Year: 2011
Downloads: 144
Quote: 1
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Abstract


The development of the satellite navigation system on the proposed new requirements to the development of satellite navigation receiver , receiver future development has become an important trend in the research and development of high-performance baseband signal processing algorithm , developed a new generation of multi-system compatible satellite navigation receiver . This project aims to develop a satellite navigation receiver GPS, GLONASS dual system compatible with the rapid capture and high dynamic function . Research based on the theory of spread spectrum communication to the GPS and GLONASS civil C / A code of the object of study , FPGA and DSP hardware platform developed on this basis , to achieve efficient receiver acquisition and tracking algorithms to improve reception the overall performance of the machine . Spread spectrum signal captured in a variety of ways , the subject of several commonly used capture algorithm to carry out a comparative analysis , selected receiver as circular correlation algorithm based on FFT capture method . Before the realization of the project , the performance of the algorithm is a detailed analysis of the simulation , and then based on the process flow of the algorithm to be implemented and verified by simulation , and finally the application of the actual receiver through the experimental test validation dozens capture speed than traditional methods times. The subject of several tracking algorithm analysis , comparison of the performance of the algorithm simulation to determine the second-order frequency-locked loop auxiliary third-order phase-locked loop as the receiver carrier tracking loop to determine the delay locked loop as code tracking loop . Then designed and implemented the tracking loop logic function module , and is verified by simulation , achieve tracking channel discriminator and loop filter and control procedures . Finally, in both static and dynamic scenes were various tests verify the performance of the tracking algorithm , the results show that the receiver tracking loop in static and dynamic scenes under the normal track , and to meet the design requirements , locate good solution accuracy .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio navigation > Navigation systems of the various institutional > Satellite navigation system
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