Novel Code Acquisition Scheme for Weak GPS Signal

Xian Shan Li; Wei Guo

doi:10.4028/www.scientific.net/AMM.610.915

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 610Novel Code Acquisition Scheme for Weak GPS Signal

Novel Code Acquisition Scheme for Weak GPS Signal

Abstract:

In this paper, we propose a novel GPS C/A code paralleled acquisition scheme with adaptive threshold setting method. The proposed threshold setting criterion is based on the ratio between the peak and the second peak which determine the signal strength over the noise. For our scheme, the detection and false alarm probabilities are derived. When the length of the received data is 200ms, simulation results show that the proposed scheme improves the acquisition sensitivity by about 2 dB in comparison with the two conventional schemes under various Doppler frequency deviation conditions.

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Periodical:

Applied Mechanics and Materials (Volume 610)

Pages:

915-920

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.610.915

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Online since:

August 2014

Authors:

Xian Shan Li*, Wei Guo

Keywords:

Averaging Correlation, Code Acquisition, Differential Coherent Accumulation, Weak GPS Signal

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References

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