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Volume 18 Issue 4
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2010  >  18(4): 263-267
LIU Jia-liang, WANG Hai-yan, JIANG Zhe, ZHANG Ying-feng. Influence of ULA Structure on PTRM Array Spatial Gain[J]. Journal of Unmanned Undersea Systems, 2010, 18(4): 263-267. doi: 10.11993/j.issn.1673-1948.2010.04.006
Citation: LIU Jia-liang, WANG Hai-yan, JIANG Zhe, ZHANG Ying-feng. Influence of ULA Structure on PTRM Array Spatial Gain[J]. Journal of Unmanned Undersea Systems, 2010, 18(4): 263-267. doi: 10.11993/j.issn.1673-1948.2010.04.006
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Influence of ULA Structure on PTRM Array Spatial Gain

doi: 10.11993/j.issn.1673-1948.2010.04.006

  • College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China

  • Received Date: 2009-06-03
  • Rev Recd Date: 2009-09-02
  • Publish Date: 2010-08-30
    Abstract
  • In order to overcome the complexity of acoustic channels multipath, theoretical expressions of the multi-element passive time reversal mirror (PTRM) are deduced, hence the principle of obtaining spatial gain by PTRM is proposed, and the influence of uniform linear array (ULA) structure on PTRM array spatial gain is studied theoretically for the first time. The proposed PTRM method is validated and analyzed with simulative data, and the computational results indicate that: (1) With the increase of array element number, PTRM array spatial gain is heightened; (2) When the element spacing is long enough( longer than the half of wave length to let noise become incorrelate), element spacing has little effect on PTRM array spatial gain, w here signal to noise ratio (SNR) influences the quality of communication predominantly.

     

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