光ヘテロダイン検出法の計測への応用
ドップラー速度計を中心に
1973 年 42 巻 6 号 p. 560-573
詳細
1973 年 42 巻 6 号 p. 560-573
As one of the most interesting applications of optical heterodyne detection in scientific measurements, various types of doppler velocimeters have been recently developed with the use of laser light. In this report, doppler velocimeters are classified into two groups of reference and self-comparison methods, each of which has two different systems of optical arrangement called as an alignment system and a self-alignment system. Various properties cl doppler velocimeters are discussed, such as measurements of a flow direction, three-dimensional measurements of a flow, and properties and processings of beat signals.
