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海洋波导的存在使得信号在水中传播过程中产生频散, 从而降低了信号处理质量. 基于声场的波导不变特性, 给出了一种具有普遍意义的Warping变换, 这种变换可以将波导中的信号频散特性简单化. 数值仿真结果表明, 只需要知道波导不变量的取值范围就可以很好地提取出波导的频散曲线, 数值仿真和海上实验数据给出了较为理想的结果.
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关键词:
- 波导不变量 /
- Warping 变换 /
- 频散曲线
Sound propagation in underwater will induce dispersion due to the natural sea waveguide, and then it will degrade the results of the signal processing. Based on the waveguide invariant, a general warping transform is presented. This warping transform could extract the waveguide mode dispersion curve and remove the effect of the waveguide dispersion. Results from the simulation and experiment show that the transform woks well.-
Keywords:
- waveguide invariant /
- Warping transform /
- frequency dispersion curve
[1] Chuprov S D 1982 Ocean Acoustic: Current State (Nauka: Moscow) p71
[2] Thode A M 2000 J. Acoust. Soc. Am. 108 1582
[3] Lu L C, Guo S M, Ma L 2009 Tech. Acoust. 28 586 (in Chinese) [鹿力成, 郭圣明, 马力 2009 声学技术 28 586]
[4] Heaney K D 2004 IEEE J. Oceanic Engineer. 29 88
[5] Su X X, Zhang R H, Li F H 2006 Acta Acoust. 31 303 (in Chinese) [苏晓星, 张仁和, 李风华 2006 声学学报 31 303]
[6] Gao D Z, Wang N, Wang H Z 2010 J. Comput. Acoust. 18 245
[7] Bonnel J, Le Touzé G, Nicolas B, Mars J I 2013 IEEE Signal Processing Magazine 30 120
[8] Ioana C, Quinquis A, Stephan Y 2006 IEEE J. Oceanic Engineer. 31 628
[9] Bonnel J, Nicolas B, Mars J I 2010 J. Acoust. Soc. Am. 128 719
[10] Zeng J, Chapman N R, Bonnel J 2013 JASA Express letters 134 394
[11] Zhou S H, Qi Y B, Ren Y 2014 Sci. China: Phys. Mech. Astron. 57 225
[12] Qi Y B, Zhou S H, Zhang R H, Zhang B, Ren Y 2014 Acta Phys. Sin. 63 044303 (in Chinese) [戚聿波, 周士弘, 张仁和, 张波, 任云 2014 63 044303]
[13] D'Spain G L, Kuperman A 1999 J. Acoust. Soc. Am. 106 2454
[14] Baraniuk R, Jones D 1995 IEEE Trans. Signal Proc. 43 2269
-
[1] Chuprov S D 1982 Ocean Acoustic: Current State (Nauka: Moscow) p71
[2] Thode A M 2000 J. Acoust. Soc. Am. 108 1582
[3] Lu L C, Guo S M, Ma L 2009 Tech. Acoust. 28 586 (in Chinese) [鹿力成, 郭圣明, 马力 2009 声学技术 28 586]
[4] Heaney K D 2004 IEEE J. Oceanic Engineer. 29 88
[5] Su X X, Zhang R H, Li F H 2006 Acta Acoust. 31 303 (in Chinese) [苏晓星, 张仁和, 李风华 2006 声学学报 31 303]
[6] Gao D Z, Wang N, Wang H Z 2010 J. Comput. Acoust. 18 245
[7] Bonnel J, Le Touzé G, Nicolas B, Mars J I 2013 IEEE Signal Processing Magazine 30 120
[8] Ioana C, Quinquis A, Stephan Y 2006 IEEE J. Oceanic Engineer. 31 628
[9] Bonnel J, Nicolas B, Mars J I 2010 J. Acoust. Soc. Am. 128 719
[10] Zeng J, Chapman N R, Bonnel J 2013 JASA Express letters 134 394
[11] Zhou S H, Qi Y B, Ren Y 2014 Sci. China: Phys. Mech. Astron. 57 225
[12] Qi Y B, Zhou S H, Zhang R H, Zhang B, Ren Y 2014 Acta Phys. Sin. 63 044303 (in Chinese) [戚聿波, 周士弘, 张仁和, 张波, 任云 2014 63 044303]
[13] D'Spain G L, Kuperman A 1999 J. Acoust. Soc. Am. 106 2454
[14] Baraniuk R, Jones D 1995 IEEE Trans. Signal Proc. 43 2269
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