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利用LOFAR谱图的二维傅里叶变换脊计算波导不变量

安良 王志强 陆佶人

安良, 王志强, 陆佶人. 利用LOFAR谱图的二维傅里叶变换脊计算波导不变量[J]. 电子与信息学报, 2008, 30(12): 2930-2933. doi: 10.3724/SP.J.1146.2007.00800
引用本文: 安良, 王志强, 陆佶人. 利用LOFAR谱图的二维傅里叶变换脊计算波导不变量[J]. 电子与信息学报, 2008, 30(12): 2930-2933. doi: 10.3724/SP.J.1146.2007.00800
An Liang, Wang Zhi-Qiang, Lu Ji-Ren. Calculating the Waveguide Invariant by the 2-D Fourier Transform Ridges of Lofargram Image[J]. Journal of Electronics and Information Technology, 2008, 30(12): 2930-2933. doi: 10.3724/SP.J.1146.2007.00800
Citation: An Liang, Wang Zhi-Qiang, Lu Ji-Ren. Calculating the Waveguide Invariant by the 2-D Fourier Transform Ridges of Lofargram Image[J]. Journal of Electronics and Information Technology, 2008, 30(12): 2930-2933. doi: 10.3724/SP.J.1146.2007.00800

利用LOFAR谱图的二维傅里叶变换脊计算波导不变量

doi: 10.3724/SP.J.1146.2007.00800

Calculating the Waveguide Invariant by the 2-D Fourier Transform Ridges of Lofargram Image

  • 摘要: 该文提出了利用被动声纳信号LOFAR谱图的二维傅里叶变换计算波导不变量的方法。在用简正波方法分析了两种典型波导的波导不变量分布情况的基础上,推导了利用LOFAR谱图二维傅里叶变换脊计算波导不变量的公式。运用该公式仿真计算了Pekeris波导和具有负跃层的浅海波导声场中声源深度从10m变化到90m时的波导不变量值,经过与南海试验数据的计算对比,两者计算结果相符。与简正波方法相比,该方法不需要精确了解海洋环境参数,同时避免了复杂的微分方程求解运算,更适合于信号的实时处理。
  • [1] 李启虎. 数字式声纳设计原理[M]. 合肥:安徽教育出版社,2002: 250-259.Li Qi-hu. Designing Principles of Digital Sonar[M]. Hefei:Anhui Education Press, 2002: 250-259. [2] Unrick R J. Principles of Underwater Sound 3rd ed [M]. NewYork : McGraw-Hill, 1983: 131-133. [3] Brekhovskikh L M and Lysanov Y P. Fundamentals of OceanAcoustics, 3rd ed [M]. New York: Springer-Verlag, 1991:128-129, 143-148. [4] Rouseff D and Spindel R C. Modeling the waveguideinvariant as a distribution[J].AIP Conference Proceedings.2002, 621(1):137-150 [5] Baggeroer A B. Estimation of the distribution of theinterference invariant with seismic streamers [J].AIPConference Proceedings.2002, 621(1):151-167 [6] Thode A M, Kuperman W A, and DSpain G L, et al..Localization using Bartlett matched-field processorsidelobes[J].J. Acoust. Soc. Am.1999, 107(1):278-286 [7] Lourens J G. Passive sonar detection of ships withspectrograms [J]. IEEE 1990 South African Symposium onCommunications and Signal Processing, Johannesburg, 1990:147-151. [8] D'Spain G L and Kuperman W A. Application of waveguideinvariants to analysis of spectrograms from shallow waterenvironments that vary in range and azimuth[J].J. Acoust.Soc. Am.1999, 106(5):2454-2468 [9] 王东晓, 杜岩, 施平. 南海上层物理海洋学气候图集[M]. 北京: 气象出版社,2002, 第4 章.Wang Dong-xiao, Du Yan, and Shi Ping. Climatological Atlasof Physical Oceanography in the Upper Layer of the SouthChina Sea[M]. Beijing: China Meteorological Press, 2002,Charpter 4. [10] Gonzalez R C and Wintz P. Digital Image Processing [M].Reading, Massachusetts: Addision-Wesley PublishingCompany Advanced Book Program, 1977: 44-45.
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  • 被引次数: 0
出版历程
  • 收稿日期:  2007-05-28
  • 修回日期:  2007-10-08
  • 刊出日期:  2008-12-19

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