Distance measurement based on standing wave for band-limited audible sound with random phase
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- Uebo Tetsuji
- SAIKA Technological Institute Foundation School of Biology-Oriented Science and Technology, Kinki University
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- Nakasako Noboru
- School of Biology-Oriented Science and Technology, Kinki University
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- Ohmata Norimitsu
- School of Biology-Oriented Science and Technology, Kinki University
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- Mori Atsushi
- School of Biology-Oriented Science and Technology, Kinki University
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説明
Distance to target is fundamental and very important information in many engineering fields. In some applications sound is often used to measure distances to targets. For this purpose, the time delay of reflected wave is typically used. This method, however, can not measure short distance because the transmitted wave, which has not attenuated enough as of reception of reflected waves, suppresses the reflected waves for short distance. Meanwhile, in the research field of microwave radar, to measure distances to multiple targets even if they are short, a novel method by using standing wave has been recently proposed. In this paper, we apply the fundamental principle of this method to measurement of short distance for multiple targets using sound wave. Specifically, we focus our attention on audible band-limited signal with random phases. To verify the validity and effectiveness of our method, we perform computer simulations and experiments. As a result, it has been confirmed that short distances to multiple targets, such as the distances of two targets located at 0.5 m and 1 m, can be measured by our method.
収録刊行物
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- Acoustical Science and Technology
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Acoustical Science and Technology 30 (1), 18-24, 2009
一般社団法人 日本音響学会
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詳細情報 詳細情報について
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- CRID
- 1390001205090546688
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- NII論文ID
- 110007007924
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- NII書誌ID
- AA11501808
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- ISSN
- 13475177
- 03694232
- 13463969
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- NDL書誌ID
- 9752873
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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
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可