Study on anti-noise scheme for detecting PPM information in shallow water channels

Nian Bao-qing; Huang Yan-zhen; Jiang Zhi-di

doi:10.1007/BF02842607

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Study on anti-noise scheme for detecting PPM information in shallow water channels

Updated：2023-05-16

- Study on anti-noise scheme for detecting PPM information in shallow water channels
- Journal of Oceanology and Limnology Vol. 17, Issue 3, Pages: 278-283(1999)
- Affiliations：
  
  Xiamen University
- Author bio：
- Funds：
- DOI：10.1007/BF02842607
  CLC：
- Published：1999
- Accepted：
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Bao-qing, N., Yan-zhen, H. & Zhi-di, J. Study on anti-noise scheme for detecting PPM information in shallow water channels., Chin. J. Ocean. Limnol. 17, 278–283 (1999). https://doi.org/10.1007/BF02842607
DOI：

Bao-qing, N., Yan-zhen, H. & Zhi-di, J. Study on anti-noise scheme for detecting PPM information in shallow water channels., Chin. J. Ocean. Limnol. 17, 278–283 (1999). https://doi.org/10.1007/BF02842607 DOI：

摘要

Abstract

Detecting exactly information from pulse position modulation (PPM) is difficult in shallow water channels because of the high noise level there. This paper reports results of analyses of some statistical characteristics of shallow water channel noise and its adverse effect on detecting PPM information; and proposes some efficient countermeasures (the method of statistical decision

use of pulse width discriminator and digital selective—frequency filter) to overcome noise interference. The results have been applied to PPM detection systems and proved to be efficient

and are of reference value for other models of signal detection.

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Keywords

references

Fu Yangda, Nian Baoqing, 1992. Study on underwater acoustic transmission mode of multi-information and its applicationJ. Xiamen University (Natural Science)31(6): 668–673.

Huang Yanzhen, Nian Baoqing, Xu Lufen, 1998a. Detection of PPM acoustic pulse in shallow sea channels.Chin. J. Oceanol. Limnol. 16(3): 214–220.

Huang Yanzhen, Nian Baoqing, Xu Lufen et al., 1998b. Research on anti-signal-fluctuation for detecting pulse position information in shallow-water acoustic channels.J. Xiamen University (Natural Science)37(2): 243–248.

Xu Tianzeng, 1990. A digital time correlative accumulation (I)—auto-correlative accumulation.Acta Acoustica 15(3): 208–214.

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