The Principle and Implementation of P-Code Direct Acquisition

Guo Qing Yu; Rui Jin; Lei Liu; Li Bo Du

doi:10.4028/www.scientific.net/AMM.543-547.2205

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 543-547The Principle and Implementation of P-Code Direct...

The Principle and Implementation of P-Code Direct Acquisition

Abstract:

It is aimed at reducing the amount of calculation by 4-point average method, replacing coherent integration with circular correlation and Doppler shift searching with the circumference shift coming from FFT results. It uses two DDR2 caches to store FFT results of receiving yards and local codes. It elaborates the specific implementation methods of this algorithm on FPGA in detail, and stimulates the direct P-code acquisition algorithm based on FFT on ModelSim. The results of stimulation show that the algorithm can improves the data utilization rate and save the acquisition time.

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Periodical:

Applied Mechanics and Materials (Volumes 543-547)

Pages:

2205-2208

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.543-547.2205

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Online since:

March 2014

Authors:

Guo Qing Yu*, Rui Jin, Lei Liu, Li Bo Du

Keywords:

FFT, FPGA Implementation, P Code Direct Acquisition

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* - Corresponding Author

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