The laser anemometer - a review
1971; Elsevier BV; Volume: 3; Issue: 4 Linguagem: Inglês
10.1016/0030-3992(71)90002-8
ISSN1879-2545
Autores Tópico(s)Geophysics and Sensor Technology
ResumoWith the invention of the laser, it was thought that this highly coherent light source could be used to measure the velocity of a material. The concept was to use the well known Doppler effect and to measure the small frequency shift produced when light is scattered by a moving object. The first successful anemometer built by Yeh and Cummins in 1964 was used to measure pipe flow. Foreman1 and his colleagues at NASA built the first really practical instrument in 1966. Since then there have been many investigators and much development has been conducted upon the laser anemometer. The instrument has advanced from one of purely scientific curiosity to one which can rival other anemometers, such as the hot-wire. In this review a discussion of the mode of operation of the laser anemometer is given, and a description of the systems which have been devised. Finally the applications of the laser anemometer will be discussed.
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