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Volume 26 Issue 5
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2018  >  26(5): 465-469
WANG Xiao-yang, ZHENG Si-yuan, LI Bin, TONG Feng. Mobile Underwater Acoustic Communication System Based on AD Variable Sampling[J]. Journal of Unmanned Undersea Systems, 2018, 26(5): 465-469. doi: 10.11993/j.issn.2096-3920.2018.05.014
Citation: WANG Xiao-yang, ZHENG Si-yuan, LI Bin, TONG Feng. Mobile Underwater Acoustic Communication System Based on AD Variable Sampling[J]. Journal of Unmanned Undersea Systems, 2018, 26(5): 465-469. doi: 10.11993/j.issn.2096-3920.2018.05.014
shu

Mobile Underwater Acoustic Communication System Based on AD Variable Sampling

doi: 10.11993/j.issn.2096-3920.2018.05.014

  • Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, College of Ocean & Earth Sciences, Xiamen University, Xiamen 361005, China

  • Received Date: 2018-07-30
  • Rev Recd Date: 2018-09-10
  • Publish Date: 2018-10-31
    Abstract
  • For the Doppler problem in mobile underwater acoustic communication of underwater mobile platforms such as autonomous undersea vehicle(AUV), the traditional software variable sampling Doppler correction method needs to accept one complete frame signal at first, and the signal is resampled after Doppler estimation, so it has high computational complexity and is difficult to implement in hardware. In this paper, an AUV mobile communication scheme based on analog-to-digital(AD) variable sampling suppression Doppler is proposed. The Doppler estimation is performed in the front part of the signal, then the AD sampling rate is adjusted by the microcontroller unit(MCU) to receive the signal, which is equivalent to Doppler compensation directly to the signal. The underwater acoustic communication system designed according to the scheme can communicate in real time and improve the communication quality. Simultaneously, adopting the direct spread spectrum technology and channel coding helps further improve communication performance of the system. Sea trial verifies the effectiveness of the proposed scheme.

     

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