Bias corrections in turbulence measurements by the laser Doppler anemometer.

This paper describes work presently underway at the Turbulence Research Laboratory, Faculty of Engineering and Applied Sciences, State University of New York at Buffalo. The object of this program was partly to develop correct data analysis algorithms and software for bias-free estimation of statistical flow quantities based on randomly arriving LDA-counter data, partly to serve as a pilot program for the design of a larger experimental facility for jet noise studies, now in its initial phase. The basic philosophy behind the development of data analysis programs was that the so-called individual realization LDA bias or statistical bias was not a mysterious and elusive property of some types of flow, but that the effect was always present in individual realization anemomtry, and that the 'bias' was only a result of incorrect data processing.