Real-time estimator of Laser Doppler Anemometer signal parameters based on Kalman filtering

Author

Gaudo, T. ; Rais, B.

Author_Institution

Office Nat. Etudes et de Recherches Aerospatiales O.N.E.R.A, French Aerosp. Lab., Palaiseau, France

fYear

2009

fDate

5-7 July 2009

Firstpage

1

Lastpage

6

Abstract

In order to develop a cheap and reliable way of measuring an aircraft´s speed, the French aerospace laboratory, ONERA, has designed a new Laser Doppler Anemometer (LDA) based on coherent detection [10]. A laser beam is generated in the vicinity of the aircraft. An aerosol particle passing through the laser volume scatters light according to its velocity. Back-scattered signal consists of a Gaussian shaped time-varying amplitude modulated by a sinusoidal signal. Its envelope and its phase carry the speed information. Because of speed requirements signal processing, a simple real-time estimator, based on Kalman filtering, is proposed in this study.

Keywords

Kalman filters; avionics; laser Doppler anemometry; optical radar; radar signal processing; Kalman filtering; aircraft´s speed; coherent detection; laser Doppler anemometer; real-time estimator; signal parameters; time-varying amplitude; Aerosols; Aircraft; Filtering; Fluid flow measurement; Kalman filters; Laboratories; Laser beams; Linear discriminant analysis; Optical design; Velocity measurement; Anemometer; Kalman; estimator; lidar; real-time;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing, 2009 16th International Conference on

Conference_Location

Santorini-Hellas

Print_ISBN

978-1-4244-3297-4

Electronic_ISBN

978-1-4244-3298-1

Type

conf

DOI

10.1109/ICDSP.2009.5201184

Filename

5201184