Application of Laser Doppler Anemometry to a Motored Diesel Engine

The application of time series analysis to Laser Doppler Anemometry data

Turbulence data is analysed with time series analysis. The data was measured in a shallow flow facility with Laser Doppler Anemometry (LDA). A regularly sampled signal is extracted from the irregular LDA-data using Nearest Neighbor Resampling (NNR). NNR is used because it is robust and provides an unbiased estimate of the variance. From the resampled signal a time series model is estimated. The...

Laser Doppler anemometry: recent developments and future challenges

The availability of new optical and electronic components and the increasing demands on measurement accuracy have led to a continuous development of the laser Doppler measurement technique in recent years. This article reviews the developments in optical systems, signal processing, data processing and in the application of LDA systems. Particular emphasis is placed on examining how well present...

Sub-Shot-Noise laser Doppler Anemometry with Amplitude-Squeezed Light

Yong-qing Li,1 Peter Lynam,2 Min Xiao,3 and Paul J. Edwards1 1Advanced Telecommunications Research Centre, Faculty of Information Sciences and Engineering, University of Canberra, P.O. Box 1, Belconnen, ACT 2616, Australia 2Department of Physics, University College, University of NSW, ADFA, ACT 2600, Australia 3Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701 (Receive...

NASA Technical ' Mem 6 andum 100072 Laser Doppler Anemometry

On-line detection/estimation scheme in laser Doppler anemometry

Laser anemometers have become a promising technique for estimating velocities in a flow. In this paper, we study their use for onboard aircraft speed of flight estimation. More specifically, this paper addresses the problem of simultaneous detection of the arrival of aerosol particles in a laser anemometer and estimation of their velocity. A joint detection-estimation scheme is proposed. A Like...