| 参量阵差分Pattern时延差编码冰下水声通信方法 |
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| 引用本文： | 殷敬伟,张晓,朱广平,唐胜雨,孙辉.参量阵差分Pattern时延差编码冰下水声通信方法[J].声学学报,2017,42(1):48-52. |
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| 作者姓名： | 殷敬伟 张晓 朱广平 唐胜雨 孙辉 |
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| 作者单位： | 1 哈尔滨工程大学 水声技术重点实验室 哈尔滨 150001; |
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| 基金项目： | 国家自然科学基金项目(61471137,61631008)、霍英东教育基金会项目(151007)和“十三五”通信信息控制和安全技术重点实验室基金项目(61421060301162106001)资助 |
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| 摘 要： | 为提高差分Pattern时延差编码水声通信方法的通信速率以及抗多途能力,使其能有效适用于冰下水声环境,提出了基于参量阵的差分Pattern时延差编码水声通信方法,推导了Pattern码的参量发射原理,分析了参量阵发射对该方法性能的影响,利用参量阵发射产生低频宽带窄指向性声柬,减少了声线触碰上下边界的次数,提高了系统抗多途的能力。冰下水域外场试验结果表明:本方法可有效抑制多途效应,同时低频宽带特性提高了系统通信速率。
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| 关 键 词： | 参量阵 差分调制 Pattern时延差 冰下水声通信 |
| 收稿时间： | 2015-05-15 |
Parametric array differential Pattern time delay shift coding underwater acoustic communication in the under-ice environment |
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| Affiliation: | 1 Acoustic Science and Technology Laboratory, Harbin Engineering University Harbin 150001;2 College of Underwater Acoustic Engineering, Harbin Engineering University Harbin 150001 |
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| Abstract: | A differential Pattern time delay shift coding underwater acoustic communication method based oil parametric array has been proposed in order to meet the demands of underwater acoustic communication in the under-ice environment which is characterized by heavy multipath transmission. A parametric array transduction method of Pattern signal has been derived and the system performance was analyzed. The transduction method can obtain a broadband low frequency narrow sound beam which will reduce the interface reflections then suppress the effects of multipath transmission. The Songhuajiang under ice trial results show that the proposed approach has an anti-multipath property and a higher data rate in under ice underwater acoustic channel. |
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