Acquisition Algorithm Based on Circular Correlation for GPS L2C CM Code Signal and the Software Implementation

Xue Fen Zhu; Yang Yang; Dong Rui Yang; Fei Shen; Xi Yuan Chen

doi:10.4028/www.scientific.net/AMM.543-547.2341

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 543-547Acquisition Algorithm Based on Circular...

Acquisition Algorithm Based on Circular Correlation for GPS L2C CM Code Signal and the Software Implementation

Abstract:

L2C is a new civilians signal launched by the modernized GPS Block IIR-M satellite. This paper studies L2C acquisition algorithms with the implementations on MATLAB. Circular correlation is utilized to implement the acquisition algorithm. The input satellite signal is collected by hardware front-end and the local code then simulated by software. The input data after frequency reduction processing and the local simulated code are converted into the frequency domain by means of FFT (Fast Fourier Transform). After performing circular correlation, the initial phase of the CM code is attained and the carrier frequency is found with the resolution of 50Hz.The effectiveness of the acquisition algorithm is finally verified through the actual satellite experiments.

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Periodical:

Applied Mechanics and Materials (Volumes 543-547)

Pages:

2341-2344

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.543-547.2341

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Online since:

March 2014

Authors:

Xue Fen Zhu*, Yang Yang, Dong Rui Yang, Fei Shen, Xi Yuan Chen

Keywords:

Acquisition Algorithm, Circular Correlation, Cm Code, GPS L2C

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* - Corresponding Author

References

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