Simulation of VLF CSS System in Atmospheric Noise

Gang Fu; Yan Jun Wu; Qian He

doi:10.4028/www.scientific.net/AMM.556-562.1874

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 556-562Simulation of VLF CSS System in Atmospheric Noise

Simulation of VLF CSS System in Atmospheric Noise

Abstract:

Very Low Frequency (VLF) communication is designed to operate in the frequency between 3 kHz and 30 kHz. The atmospheric noise generated by lightning phenomena is the main source of interference in VLF communications, it is rather difficult to detect the communication signal that not only merged in strong channel noise, but probably interfered by high-tension impulse caused by thunder. This paper, Alpha stable distribution noise model is proposed to simulate atmospheric noise firstly, then, we study a new technique of Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT), This paper studies a new VLF communication technique of the Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT), and it demodulates message utilizing energy gathering property of chirp signal in FRFT domain.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

Pages:

1874-1878

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.556-562.1874

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Online since:

May 2014

Authors:

Gang Fu*, Yan Jun Wu, Qian He

Keywords:

Class a Noise, CSS, FRFT, VLF Communication

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