Title :
A new concept for medium to long range LDA measurements
Author :
Caspersen, Christian
Author_Institution :
Dantec Elektronik, Skovlunde, Denmark
Abstract :
The development of a laser Doppler anemometer (LDA) system for long-range operation on the basis of fiber optics is discussed. The author describes some practical examples of realization. It is noted that the main problems with the long-range systems are the requirement for the large aperture if a single lens system should be used for both transmission and reception and the complication in mirror systems for individual transmission beams if individual transmission beams are used. It is suggested that the fiber technology will overcome these problems and add further benefits. Test measurements in a wind tunnel for full-scale testing of cars are discussed
Keywords :
Doppler effect; anemometers; automobiles; fibre optics; laser velocimetry; optical links; wind tunnels; DANTEC; cars; fiber optics; full-scale testing; laser Doppler anemometer; long-range operation; wind tunnel; Apertures; Fiber lasers; Laser beams; Linear discriminant analysis; Optical fibers; Optical filters; Optical transmitters; Position measurement; Probes; Volume measurement;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1989. ICIASF '89 Record., International Congress on
Conference_Location :
Gottingen
DOI :
10.1109/ICIASF.1989.77677
