Experimental Studies on Transmission Characterization of Stratified Earth Channel in Through-the-Earth Communications with Elastic Wave

Jian Jun Hao; Huan Ling Pang; Hui Li

doi:10.4028/www.scientific.net/AMR.734-737.2598

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 734-737Experimental Studies on Transmission...

Experimental Studies on Transmission Characterization of Stratified Earth Channel in Through-the-Earth Communications with Elastic Wave

Abstract:

With aim to test the earth channel characterization, a simplified through-the-earth communication system is established, and hence an experiment transmitting single frequency and modulated elastic wave signal through a two-layered earth channel model is performed. By analysis of experimental results, the earth channels amplitude-frequency and fading characterization are achieved. Also conclusions can be drawn as: (1) from the wave form, we can see that the receiving signal fading is an evident feature, the amplitude near the moment of phase transition is lower than other moment; (2) from the spectrum we can see that the high frequency components attenuate more heavily than the low frequency components. The experiment results also show that the experiment channel attenuation is at minimum level at 200-300Hz.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

2598-2602

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.2598

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Online since:

August 2013

Authors:

Jian Jun Hao, Huan Ling Pang, Hui Li

Keywords:

Amplitude-Frequency Characterization, Communication, Fading, Through-The-Earth

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