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| Development of an FHMA-based Underwater Acoustic Communications System for Multiple Underwater Vehicles
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 PDF(1019.3KB) |
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Source |
International Journal of Robotics and Automation (IJRA) |
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Table of Contents |
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Download
Complete Issue PDF(1.38MB) |
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Volume: 3 Issue: 2 |
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Pages: NULL |
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Publication
Date: April 2012 |
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ISSN
(Online): 2180-1312 |
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Pages |
61 - 76 |
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Author(s) |
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Published
Date |
16-04-2012 |
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Publisher |
CSC
Journals, Kuala Lumpur,
Malaysia |
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ADDITIONAL
INFORMATION |
| Keywords Abstract References Cited by Related Articles Collaborative
Colleague |
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KEYWORDS: Multiple Underwater Vehicles, Underwater Acoustic Communications, Sound Card |
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| This paper describes the design of an underwater acoustic communications system for multiple underwater vehicles, based on frequency-hopping multiple-access (FHMA) and tamed spread-spectrum communications. The system makes used of the tamed spread-spectrum method, frequency hopping, 4FSK, and a rake receiver. In order to make the system more practical, the underwater channel and the effect of the number of users on the bit error ratio (BER) are also taken into account. Since the necessary proving experiments are not easily conducted in the ocean, a platform is developed that uses the sound card of a computer, combined with a sound box and microphone, to transduce energy for acoustic communications. Simulated and experimental results indicate that this system could provide reliable underwater communications between multiple underwater vehicles. |
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| Zixin Zhao : Colleagues
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| Shuxiang Guo : Colleagues
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| Nan Xiao : Colleagues
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