ONLINE JOINT DETECTION OF PARTICLES ARRIVAL AND ESTIMATION OF SPEED IN LASER ANEMOMETRY

Laser anemometers have become a promising technique for estimating vel ocities in a flow. In this paper, we study their use for on-board airc raft speed of flight estimation. More specifically, this paper address es the problem of simultaneous detection of the arrival of aerosol par ticles in a laser anemometer and estimation of their velocity. A joint detection-estimation scheme is proposed. A likelihood ratio test is p resented and considerations about the specificities of the problem are used to calculate the threshold. Computationally efficient algorithms for estimating the parameters of interest are derived and on-line imp lementation issues are addressed. Numerical examples attest for the pe rformance of the method, on both simulated and real data recorded on-b oard an aircraft. (C) 1998 Elsevier Science B.V. All rights reserved.