Combined Method of Conventional and Coherent Doppler Sonar to Avoid Velocity Ambiguity
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- LIU Peng
- Graduate School of Maritime Sciences, Kobe University
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- KOUGUCHI Nobuyoshi
- Graduate School of Maritime Sciences, Kobe University
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Pulse-to-pulse coherent Doppler sonar is an autonomous and powerful tool for velocity measurement in laboratory and field applications. However, coherent Doppler sonar has velocity ambiguity that limits measureable velocity. Some techniques have been developed to extend the ambiguity velocity, but they are not yet enough to eliminate it completely. On the other hand, conventional Doppler sonar, while it does not have velocity ambiguity, has larger velocity error than coherent Doppler sonar. In our research, we combine conventional and coherent Doppler sonars in a method to provide accurate and precise velocity without ambiguity. Three kinds of sonar are introduced: conventional, coherent and combined Doppler. Theoretical errors of conventional and coherent Doppler sonars are explained, and the measurement error of combined Doppler sonar is obtained theoretically. From results based on a simulation, it is clear that under certain conditions, the combined Doppler sonar can provide accurate and precise velocities without velocity ambiguity.
収録刊行物
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- 海洋音響学会誌
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海洋音響学会誌 41 (3), 103-112, 2014
特定非営利活動法人 海洋音響学会
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詳細情報 詳細情報について
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- CRID
- 1390001204365852544
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- NII論文ID
- 130005116098
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- NII書誌ID
- AN10299394
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- ISSN
- 18816819
- 09165835
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- NDL書誌ID
- 025635810
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 使用不可