Spurious Frequency Spectra Caused by the Scattered Lights from Transparent Channel Wall in the Laser Doppler Velocimetry
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概要
- 論文の詳細を見る
Spurious frequency spectra, SFS, in laser Doppler velocimetry, caused by a superposition of the scattered light from a stationary transparent wall of a thin flow channel with the incident light are discussed and systematically analyzed. The observed SFS as well as the amplitude of SFS changed with the position and aperture size of the receiving optics. They were entirely different from the so-called frequency broadening and the characteristics indicated that the scattered light served as reference beams on the heterodyne detection of the Doppler signals. A theoretical analysis of the SFS, undertaken by using a simple model, is compared with experimental results; both were in good agreement. A rejection method of SFS is also discussed.
- 社団法人応用物理学会の論文
- 1987-06-20
著者
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Okada Eiji
Department Of Electrical Engineering Faculty Of Science And Technology Keio University
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Okada Eiji
Department Of Electrical Engineering Faculty Of Engineering Himeji Institute Of Technology
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Minamitani Haruyuki
Department Of Applied Physics And Physico-informatics Faculty Of Science And Technology Keio Univers
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Okada Eiji
Department of Applied Chemistry, Faculty of Engineering, Hiroshima University
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