| 分数阶Fourier变换在深海远程水声通信中的应用 |
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| 引用本文： | 殷敬伟,惠俊英,蔡平,郭龙祥.分数阶Fourier变换在深海远程水声通信中的应用[J].电子学报,2007,35(8):1499-1504. |
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| 作者姓名： | 殷敬伟 惠俊英 蔡平 郭龙祥 |
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| 作者单位： | 哈尔滨工程大学水声工程学院,黑龙江哈尔滨 150001 |
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| 摘 要： | 提出深海远程水声通信方案,利用深海声道特性,将通信节点置于声道轴以减小传播损失,提高通信距离.将分数阶Fourier变换(FRFT)应用于水声通信同步检测及Pattern时延差编码(PDS)水声通信体制,可减小多普勒频偏的影响.通过计算机仿真研究表明,分数阶Fourier变换相对于拷贝相关将更适用于存在多普勒频偏的相干多途水声信道条件,有助于实现低误码率通信.
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| 关 键 词： | 分数阶Fourier变换 Pattern时延差编码体制 深海远程水声通信 |
| 文章编号： | 0372-2112（2007）08-1499-06 |
| 收稿时间： | 2006-09-27 |
| 修稿时间： | 2006-09-27 |
Application of Fractional Fourier Transform in Long Range Deep-Water Acoustic Communication |
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| YIN Jing-wei,HUI Jun-ying,CAI Ping,GUO Long-xiang.Application of Fractional Fourier Transform in Long Range Deep-Water Acoustic Communication[J].Acta Electronica Sinica,2007,35(8):1499-1504. |
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| Authors: | YIN Jing-wei HUI Jun-ying CAI Ping GUO Long-xiang |
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| Affiliation: | College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin,Heilongjiang 150001,China |
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| Abstract: | The underwater acoustic communication scheme of long range deep-water is presented which makes use of the characters of the deep-water acoustic channel putting the communication modems at the depth corresponding to minimal sound velocity value in order to mitigate the transmission loss to improve the range of communication.The fractional Fourier transform(FRFT) is applied to synchronization acquisition and Pattern Time Delay Shift Coding scheme to mitigate the influence caused by Doppler.The results of computer simulations show that FRFT is more adaptive than copy-correlation in the Doppler shift multipath channel that will conduce to communicate with low bit-error-rate. |
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| Keywords: | fractional Fourier transform(FRFT) Pattern time delay shift coding scheme long range deep-water underwater acoustic communication |
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