Interference Suppression of VLF Communications in Atmospheric Noise

Yan Jun Wu; Gang Fu; Wen Jian Geng

doi:10.4028/www.scientific.net/AMR.989-994.4005

Paper Titles

Detection and Parameter Estimation of Chirp Signal Based on Time-Frequency Analysis
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Parameters Estimation and Waveform Reconstruction of Chirp Signal Based on FRFT
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Research on Demodulation of Pulse Code Modulated Signal Based on Instantaneous Frequency Measurement
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LFM Signal Detection Method Based on Fractional Fourier Transform
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Interference Suppression of VLF Communications in Atmospheric Noise
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Research on Joint Time-Frequency Analysis Methods of Adaptive Radar Signal
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A Study on Same-Beam Interferometry in Deep Space
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The Application and Simulation of OFDM Technology in Power Line Communication
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Research on Demodulation of High Bit Rate Telemetry Signal in FM Baseband
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994Interference Suppression of VLF Communications in...

Interference Suppression of VLF Communications in Atmospheric Noise

Abstract:

This paper focuses on the weak signal reception and atmospheric noise suppression in VLF Chirp spread spectrum communication system. Due to interference of atmospheric noise generated by lightning phenomena, it makes the chirp signal detection under low SNR condition becoming more difficult. Therefore, we select alpha stable distribution noise model to generate noise to simulate the real atmospheric noise. Then, we introduced a new technique of Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT). Finally, we study a nonlinear processing interference suppression method of clipping in time domain. Simulation results verified its feasibility.

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Periodical:

Advanced Materials Research (Volumes 989-994)

Pages:

4005-4008

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.989-994.4005

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Online since:

July 2014

Authors:

Yan Jun Wu*, Gang Fu, Wen Jian Geng

Keywords:

Chirp Spread Spectrum (CSS), Clipping, FRFT, Interference Suppression, VLF Communication

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