| 浅海声信道“时域衰落”特性研究 |
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| 引用本文： | 梁筠莲,许水源,林麒,王清池,浦玉斌.浅海声信道“时域衰落”特性研究[J].热带海洋学报,1996(3). |
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| 作者姓名： | 梁筠莲 许水源 林麒 王清池 浦玉斌 |
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| 作者单位： | 厦门大学海洋学系 |
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| 摘 要： | 研究了浅海声信道“时域衰落”与海况、波高、中心频率和作用距离的关系。结果表明：在相同海况下,波浪愈高,振幅起伏愈明显;在同样作用距离、深度下,中心频率２０ｋＨｚ是信道较好的传播频率,其振幅起伏小,自相关时间较长;在该声道中,作用距离在２０００─２５００ｍ处振幅起伏最大。
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| 关 键 词： | 浅海声信道 时域衰落 |
A STUDY ON THE TIME-DOMAIN ATTENUATION CHARACTERISTICS OF A SHALLOW SEA ACOUSTIC CHANNEL |
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| Liang Yunlian,Xu Shuiyuan,Lin Qi,Wang Qingchi,Pu Yubin.A STUDY ON THE TIME-DOMAIN ATTENUATION CHARACTERISTICS OF A SHALLOW SEA ACOUSTIC CHANNEL[J].Journal of Tropical Oceanography,1996(3). |
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| Authors: | Liang Yunlian Xu Shuiyuan Lin Qi Wang Qingchi Pu Yubin |
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| Abstract: | This paper studies the relations between "time-domain attenuation" and sea state or wave height, center frequency or transmitting range. It is shown that (1) under similar sea state conditions, the higher the wave heights, the more serious the amplitude fluctuations;(2) in the experimental sea area, the center frequency 20 kHz was a better transmission frequency, i. e. less amplitude fluctuation and longer autocorrelation time;(3) the amplitude fluctuation was maximum at a transmitting range of about 2 0002 500m in the experimental sea area. |
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| Keywords: | shallow sea acoustic channel time-domain attenuation |
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