The Principle and Characteristics of a Three-dimensional BOS Method using an Optical Image Fibre
| Autor: | UKAI, Takahiro |
|---|---|
| Jazyk: | japonština |
| Rok vydání: | 2022 |
| Zdroj: | 宇宙航空研究開発機構特別資料: 第53回流体力学講演会/第39回航空宇宙数値シミュレーション技術シンポジウム論文集 = JAXA Special Publication: Proceedings of the 53rd Fluid Dynamics Conference / the 39th Aerospace Numerical Simulation Symposium. :235-241 |
| ISSN: | 2433-2232 |
| Popis: | 第53回流体力学講演会/第39回航空宇宙数値シミュレーション技術シンポジウム (2021年6月30日-7月2日. 日本航空宇宙学会 : 宇宙航空研究開発機構(JAXA)オンライン会議) The 53rd Fluid Dynamics Conference / the 39th Aerospace Numerical Simulation Symposium (June 30 - July 2, 2021. The Japan Society for Aeronautical and Space Sciences : Japan Aerospace Exploration Agency (JAXA), Online meeting) A telecentric Fibre BOS technique consisting of a telecentric optical system, several optical image fibres, and a camera is proposed in this study for reasonable time-resolved three-dimensional density measurements. The effects of the fibre’s components: a core and a clad, on the estimation accuracy of a pixel displacement were experimentally investigated. The experimental results show that it is important to adjust a background-dot size based on the core size if the core size is larger than the pixel size on the image sensor. The background-dot size, which is more than twice as large as the core size, provides good estimation accuracy. Additionally, the effectiveness of the proposed telecentric Fibre BOS technique has been demonstrated for the time-resolved three-dimensional density measurement using a single high-speed camera with 5.5 kfps. 形態: 図版あり Physical characteristics: Original contains illustrations 資料番号: AA2130027022 レポート番号: JAXA-SP-21-008 |
| Databáze: | OpenAIRE |
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