Laser doppler anemometer using high-frequency laser pulses
摘要
A laser Doppler anemometer with at least two laser beams pass to a region of a fluid flow containing particles. The scattered light is frequency shifted by the Doppler frequency resulting from the flow speed. The construction is very compact and permits a high signal-to-noise ratio for the measurement signals. The laser beams consist of high-frequency pulses, the frequency of the pulse sequence of which is a multiple of the Doppler frequency.
申请公布号
US4974960(A)
申请公布日期
1990.12.04
申请号
US19880226703
申请日期
1988.08.01
申请人
MINI DEUTSCHE WIRTSCHAFT;DEUTSCH FRANZ FORSCH INST
发明人
DOPHEIDE, DIETRICH;FABER, MICHAEL;TAUX, GUENTER;PFEIFER, HANS-JOACHIM;REIM, GERHARD