| 水声多径信道多普勒因子精确估计方法 |
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| 引用本文： | 何成兵,黄建国,孟庆微,张群飞.水声多径信道多普勒因子精确估计方法[J].电声技术,2010,34(12):57-59,80. |
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| 作者姓名： | 何成兵 黄建国 孟庆微 张群飞 |
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| 作者单位： | 西北工业大学航海学院,陕西西安,710072 |
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| 基金项目： | 西北工业大学基础研究基金项目(JC201027) |
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| 摘 要： | 由水下平台运动导致的多普勒效应是影响高数据率水声通信性能的主要因素,现有多普勒估计方法在复杂水声多径信道条件下估计精度急剧下降。针对此问题,提出了一种可自动匹配水声多径信道的精确多普勒频移估计方法。仿真结果表明：该方法可显著提高水声多径信道的多普勒频移估计精度,信道适应性强,在信噪比大于-5 dB时,估计精度始终保持在10^-4左右,满足高数据率水声通信对多普勒因子估计精度的要求。
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| 关 键 词： | 水声通信 多普勒因子 延迟互相关 多径 |
Accurate Doppler Factor Estimation for Multipath Underwater Acoustic Channels |
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| HE Chengbing,HUANG Jianguo,MENG Qingwei,ZHANG Qunfei.Accurate Doppler Factor Estimation for Multipath Underwater Acoustic Channels[J].Audio Engineering,2010,34(12):57-59,80. |
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| Authors: | HE Chengbing HUANG Jianguo MENG Qingwei ZHANG Qunfei |
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| Affiliation: | (College of Marine,Northwestern Polytechnical University,Xi′an 710072,China) |
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| Abstract: | Doppler effects caused by motion of underwater platform is one main obstacle for reliable high data rate underwater acoustic communication.The performance of current Doppler shift estimation scheme decline in multipath channel.To resolve this problem,a novel accurate Doppler shift estimation method is proposed,which can be auto-matched different multipath channels.Simulation results show that the proposed method is suitable for underwater acoustic communication. |
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| Keywords: | underwater acoustic communication Doppler shift delay correlation multipath |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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