垂直线列阵结构对PTRM阵处理空间增益的影响

刘家亮; 王海燕; 姜喆; 张颖峰

doi:10.11993/j.issn.1673-1948.2010.04.006

垂直线列阵结构对PTRM阵处理空间增益的影响

doi: 10.11993/j.issn.1673-1948.2010.04.006

西北工业大学航海学院, 陕西西安, 710072

详细信息

作者简介:
刘家亮( 1984- ) , 男, 在读硕士, 研究方向为水声通信与信息系统.

中图分类号: TJ630.34;TN911.5
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出版历程
- 收稿日期: 2009-06-03
- 修回日期: 2009-09-02
- 刊出日期: 2010-08-30

Influence of ULA Structure on PTRM Array Spatial Gain

College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China

摘要

摘要: 水声信道多径的复杂性使得被动时间反转镜( PTRM )技术成为一大研究热点。该文推导了多阵元PTRM 原理表达式, 在此基础上给出了PTRM 阵处理获得空间增益的机理, 首次从理论上分析了垂直线列阵结构对PTRM 阵处理空间增益的影响, 并通过计算机仿真验证了理论分析, 结果表明, PTRM 阵处理空间增益随着阵元数目的增加而得到提高;当阵元间距足够大时(大于半个波长, 使噪声不相关), 阵元间距对PTRM 阵处理的空间增益没有明显影响, 此时影响到通信质量的主要是信噪比。
- 水声信道 /
- 多阵元 /
- 被动时间反转镜 /
- 垂直线列阵 /
- 空间增益
Abstract: In order to overcome the complexity of acoustic channels multipath, theoretical expressions of the multi-element passive time reversal mirror (PTRM) are deduced, hence the principle of obtaining spatial gain by PTRM is proposed, and the influence of uniform linear array (ULA) structure on PTRM array spatial gain is studied theoretically for the first time. The proposed PTRM method is validated and analyzed with simulative data, and the computational results indicate that: (1) With the increase of array element number, PTRM array spatial gain is heightened; (2) When the element spacing is long enough( longer than the half of wave length to let noise become incorrelate), element spacing has little effect on PTRM array spatial gain, w here signal to noise ratio (SNR) influences the quality of communication predominantly.
- acoustic channel /
- multi-element /
- passive time reversal mirror(PTRM) /
- uniform linear array(ULA) /
- spatial gain

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参考文献(5)

[1]	Kilfoyle D B, Baggeroer A B. The State of the Art in Underwater Acoustic Telemetry [J] . IEEE Journal of Oceanic Engineering, 2000, 25(1): 4-27.
[2]	Smith K B, Abrantes A A, Larraza A. Examination of Time Reversal Acoustics in Shallow Water and Applications to Nonco-herent Underwater Communications[J]. The Journal of the Acoustical Society of America, 2003,113(6): 3095-3110.
[3]	Edelmann G F, Akal T, Hodgkiss W S, et al. An Initial Demonstration of Underwater Acoustic Communication Using Time Reversal [J]. IEEE Journal of Oceanic Engineering (S0364-9059) , 2002, 27(3): 602-609.
[4]	Dowling D R. Acoustic Pulse Compression Using passive Phase-conjugate Processing[J]. Journal of the Acoustical Society of America, 1994, 95(3): 1450-1458.
[5]	Rouseff D, Jackson D R, Fox W L J, et al. Underwater Acoustic Communication by Passive Phase Conjugation: Theory and Experimental Results[J]. IEEE Journal of Oceanic Engineering. 2001, 126(4): 821-831.