基于时空滤波理论的低频声场干涉结构研究

余赟; 惠俊英; 陈阳; 惠娟; 殷敬伟

doi:10.7498/aps.61.054303

摘要

基于时空滤波理论, 采用相干函数、功率响应函数、扩展分布函数、双频函数四个系统函数较波导不变量更全面地描述了低频声场的相干结构. 理论分析、仿真研究和海试数据处理都验证了低频声场存在稳定的干涉结构, 当目标由远及近、又由近及远做匀速直线运动时, 相干函数(LOFAR图)的干涉结构为一簇类双曲线; 功率响应函数的干涉图表征了简正波群时延的差分, 体现了其频散特性; 扩展分布函数能反映LOFAR图上干涉条纹的斜率大小; 而双频函数能体现相慢度的差分. 各个系统函数均能特别突出干涉结构的某方面的特征, 各有特色.

关键词:

Abstract

Compared with the waveguide invariant, the interference structures in low-frequency acoustic field are more comprehensively described by four system functions: coherent function, power response function, spread function and dual-frequency function, from space-time filter theory. A stable interference structure in the low-frequency acoustic field is testified based on theoretical analysis, simulation and sea trial data processing. When the target moves in a uniform rectilinear motion from far to near then from near to far, the interference structure of coherent function (LOFARgram) appears to be a family of quasi hyperbolas; the interference structure obtained by power response function represents the group delay difference and the dispersive characteristic of the normal mode; and the phase slowness difference can be exhibited by dual-frequency function. Each system function owns special characteristics, which can give prominence to certain features of the interference structure.

Keywords:

作者及机构信息

1.
海军装备研究院, 北京 100161;

2.
哈尔滨工程大学水声技术重点实验室, 哈尔滨 150001

基金项目: 水声技术国防科技重点实验室基金(批准号: 9140C200201090C2004, 9140C2002100802)、声纳技术国家级重点实验室开放基金(批准号: kf201001)和国家自然科学基金(批准号: 51009041)资助的课题.

Authors and contacts

1.
Naral Academy of Armament, Beijing 100161, China;

2.
Science and Technology on Underwater Acoustic Laboratory, Harbin Engineering University, Harbin 150001, China

Funds: Project supported by the Science and Technology Foundation of State Key Laboratory of Underwater Acoustic Technology, China (Grant Nos. 9140C200201090C2004, 9140C2002100802), National Key Laboratory of Sonar Fund (Grant No. kf201001) and National Natural Science Foundation of China (Grant No. 51009041).

参考文献

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[2]	Yu Y, Hui J Y, Zhao A B, Sun G C, Teng C 2008 Acta Phys. Sin.57 5742 (in Chinese) [余赟, 惠俊英, 赵安邦, 孙国仓,滕超 2008 57 5742]
[3]	Yu Y, Hui J Y, Chen Y, Sun G C, Teng C 2009 Acta Phys. Sin. 586335 (in Chinese) [余赟, 惠俊英, 陈阳, 孙国仓,滕超 2009 58 6335]
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[5]	Brekhovskikh L M, Lysanov Y P 2002 Fundamentals of OceanAcoustics (New York: Springer-Verlag)
[6]	D'Spain G L, Kuperman W A 1999 J. Acoust. Soc. Am. 106 2454
[7]	Wang N, Gao D Z, Wang H Z 2010 J. Harbin Eng. Univ. 31 825(in Chinese) [王宁, 高大治, 王好忠 2010哈尔滨工程大学 31 825]
[8]	Guo G Q, Yang Y X, Sin C 2011 Chin. Sci. Bull. 56 142
[9]	Turgut A, Orr M, Rouseff D 2010 J. Acoust. Soc. Am. 127 73
[10]	Cockrell K L, Schmidt H 2010 J. Acoust. Soc. Am. 127 2780
[11]	Yu Y, Hui J Y, Yin J W, Hui J, Wang Z J Acta Acustica (accepted)(in Chinese)[余赟, 惠俊英, 殷敬伟, 惠娟, 王自娟声学学报 (待发表)]
[12]	Rouseff D, Spindel R C 2002 AIP Conference Proceedings 621137
[13]	Yang T C 2003 J. Acoust. Soc. Am. 113 1342
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[15]	Yu Y, Hui J Y, Zhao A B, Lin F 2011 Acta Armament 32 274 (inChinese) [余赟, 惠俊英, 赵安邦, 林芳 2011兵工学报 32 274]
[16]	Yu Y, Hui J Y 2011 Acta Acustica 36 256 (in Chinese) [余赟, 惠俊英 2011 声学学报 36 256]
[17]	An L, Wang Z Q, Lu J R 2008 J. Electron. Information Technol.30 2930 (in Chinese)[安良, 王志强, 陆佶人 2008 电子与信息学报 30 2930]

施引文献

[1]	Hui J Y, Sun G C, Zhao A B 2008 Acta Acustica 33 300 (in Chinese) [惠俊英, 孙国仓, 赵安邦 2008声学学报 33 300]
[2]	Yu Y, Hui J Y, Zhao A B, Sun G C, Teng C 2008 Acta Phys. Sin.57 5742 (in Chinese) [余赟, 惠俊英, 赵安邦, 孙国仓,滕超 2008 57 5742]
[3]	Yu Y, Hui J Y, Chen Y, Sun G C, Teng C 2009 Acta Phys. Sin. 586335 (in Chinese) [余赟, 惠俊英, 陈阳, 孙国仓,滕超 2009 58 6335]
[4]	Chuprov S D 1982 Interference structure of sound field in thelayered ocean, in Brekhovskikh L M, Andreeva I B (ed) OceanAcoustics. Modern State (Moscow Nauka) pp 71-91
[5]	Brekhovskikh L M, Lysanov Y P 2002 Fundamentals of OceanAcoustics (New York: Springer-Verlag)
[6]	D'Spain G L, Kuperman W A 1999 J. Acoust. Soc. Am. 106 2454
[7]	Wang N, Gao D Z, Wang H Z 2010 J. Harbin Eng. Univ. 31 825(in Chinese) [王宁, 高大治, 王好忠 2010哈尔滨工程大学 31 825]
[8]	Guo G Q, Yang Y X, Sin C 2011 Chin. Sci. Bull. 56 142
[9]	Turgut A, Orr M, Rouseff D 2010 J. Acoust. Soc. Am. 127 73
[10]	Cockrell K L, Schmidt H 2010 J. Acoust. Soc. Am. 127 2780
[11]	Yu Y, Hui J Y, Yin J W, Hui J, Wang Z J Acta Acustica (accepted)(in Chinese)[余赟, 惠俊英, 殷敬伟, 惠娟, 王自娟声学学报 (待发表)]
[12]	Rouseff D, Spindel R C 2002 AIP Conference Proceedings 621137
[13]	Yang T C 2003 J. Acoust. Soc. Am. 113 1342
[14]	Hui J Y, Sheng X L 2007 Underwater Acoustic Channel(Beijing: National Defense Industry Press) pp77-81 (in Chinese)[惠俊英, 生雪莉 2007 水下声信道(第二版) (北京:国防工业出版社) 第77--81页]
[15]	Yu Y, Hui J Y, Zhao A B, Lin F 2011 Acta Armament 32 274 (inChinese) [余赟, 惠俊英, 赵安邦, 林芳 2011兵工学报 32 274]
[16]	Yu Y, Hui J Y 2011 Acta Acustica 36 256 (in Chinese) [余赟, 惠俊英 2011 声学学报 36 256]
[17]	An L, Wang Z Q, Lu J R 2008 J. Electron. Information Technol.30 2930 (in Chinese)[安良, 王志强, 陆佶人 2008 电子与信息学报 30 2930]

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