| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Coherence-Time of Matched-Field Processing in Shallow Water in the Presence of Linear Internal Waves |
| JI Gui-Hua1,2,3, LI Zheng-Lin1,2, DAI Qiong-Xing2 |
| 1National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1001902Haikou Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 5701053Graduate University of Chinese Academy of Sciences, Beijing 100190 |
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| Cite this article: |
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JI Gui-Hua, LI Zheng-Lin, DAI Qiong-Xing 2009 Chin. Phys. Lett. 26 094301 |
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Abstract Relationships among the signal coherence-time of matched-field processing (MFP), the acoustic frequency, the source-receiver range, and the sound speed standard deviation (STD) caused by internal waves in shallow water, are numerically investigated based on oceanographic data from two shallow water experiments. It is found that the coherence-time can be fitted with an inverse square-root power of range, a near inverse 1 power of frequency, and inverse 1.3 power of sound speed STD.
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| Keywords:
43.30.Re
43.30.Wi
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Received: 01 December 2008
Published: 28 August 2009
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| PACS: |
43.30.Re
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(Signal coherence or fluctuation due to sound propagation/scattering in the ocean)
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43.30.Wi
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(Passive sonar systems and algorithms, matched field processing in underwater acoustics)
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