| STUDY ON FREQUENCY CODING ANTI—INTERFERENCE SYSTEM FOR DATA TRANSMISSION IN SHALLOW WATER ACOUSTIC CHANNELS |
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| 引用本文： | 许肖梅,粘宝卿,刘志鑫,许鹭芬,黄衍镇.STUDY ON FREQUENCY CODING ANTI—INTERFERENCE SYSTEM FOR DATA TRANSMISSION IN SHALLOW WATER ACOUSTIC CHANNELS[J].中国海洋与湖沼学报,2002,20(4):309-315. |
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| 作者姓名： | 许肖梅 粘宝卿 刘志鑫 许鹭芬 黄衍镇 |
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| 作者单位： | InstituteofsubtropicalOceanography,XiamenUniversity,Xiamen361005,china |
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| 基金项目： | Project81 8 0 1 0 1 2 6supportedbytheState“863”plan，alsosupportedbytheMinistryofEducationFoundationforUniversityKeyTeachers |
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| 摘 要： | Achieving reliable underwater communication in shallow water acoustic channels is a difficult because of the random time-varying nature of multipath propagation,severe amplitude fluctuation,and spatial variability of the channel conditions.This paper describes a new signal processing technique-frequency coding and decoding by means of real-time measurement of signal width,jamming and suppressing multipath interference and using redundant coder.The application of the technique to thd model ZTY-1 status monitor for underwater system of seabed is introduced in this paper.The main principle,the technique specifications and the key techniques of the system are discussed here.Theoretical estimations and experimental results proved that the performance of the system is excellent.The method can be used for some other related low-data-rate data transmission detecting in shallow water acoustic channel.
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| 关 键 词： | 浅水 水声工程 数据传输 频率编码 振幅 空间变化 信道 抗干扰 |
| 收稿时间： | 22 August 2001 |
| 修稿时间： | 12 March 2002 |
Study on frequency coding anti-interference system for data transmission in shallow water acoustic channels |
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| Xu Xiao-mei,Nian Bao-qing,Liu Zhi-xin,Xu Lu-fen,Huang Yan-zhen.Study on frequency coding anti-interference system for data transmission in shallow water acoustic channels[J].Chinese Journal of Oceanology and Limnology,2002,20(4):309-315. |
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| Authors: | Xu Xiao-mei Nian Bao-qing Liu Zhi-xin Xu Lu-fen Huang Yan-zhen |
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| Institution: | (1) Institute of subtropical Oceanography, Xiamen University, 361005 Xiamen, China |
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| Abstract: | Achieving reliable underwater communication in shallow water acoustic channels is a difficult task because of the random time varying nature of multipath propagation, severe amplitude fluctuation, and spatial variability of the channel conditions. This paper describes a new signal processing technique frequency coding and decoding by means of real time measurement of signal width, jamming and suppressing multipath interference and using redundant coder. The application of the technique to the model ZTY 1 status monitor for underwater system of seabed is introduced in this paper. The main principle, the technique specifications and the key techniques of the system are discussed here. Theoretical estimations and experimental results proved that the performance of the system is excellent. The method can be used for some other related low data rate data transmission detecting in shallow water acoustic channel. |
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| Keywords: | acoustic channels frequency coding anti interference |
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