2016 Fiscal Year Final Research Report
Accurate and Precise Velocity Measurement of Moving Fluid using Coherency between Adjacent Pulses
| Project/Area Number |
15K14264
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Kobe University |
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Principal Investigator |
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| Research Collaborator |
KUBOTA Takashi
LIU Pen
IKAWA Akihiro
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 精密速度計測 / ドップラー方式 / コヒーレントドップラーソーナー / 波数の決定 |
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| Outline of Final Research Achievements |
Conventional, usually used, Doppler sonar, though unlimited by velocity range ambiguity, takes seconds to return valuable velocity readings. Coherent Doppler sonar has been proposed to provide accurate velocity with short time lag for current or turbulent. However, the velocity ambiguity seriously limits its general application. In this research, combined Doppler sonar had been proposed to overcome the disadvantages of both conventional and coherent Doppler sonars. An adaptive algorithm was used for combined Doppler sonar to provide accurate and precise velocity information at a wide range of SNRs. Experiments were carried out to evaluate the performance of combined Doppler sonar proposed. Based on experimental results, with suitable ambiguity velocities, combined Doppler sonar would provide accurate and precise velocity information at a wide range of SNRs. Additionally, we applied for a patent about our proposed method.
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| Free Research Field |
海洋計測
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