Title :
Cramer-Rao Bounds for sound field measurements by means of Laser Doppler Velocimetry
Author :
Duff, Alain Le ; Plantier, Guy ; Valière, Jean-Christophe ; Gazengel, Bruno
Author_Institution :
Ecole Super. d´´Electron. de l´´Ouest, Angers
Abstract :
Laser Doppler velocimetry (LDV) is a method for measuring acoustic particle velocity in a fluid. This article presents the approximated analytical forms of the Cramer-Rao bounds (CRB) for the velocity parameters estimation. This study shows that these simplified CRB, which give the lower limits of the variance of any estimator, are close to the exact CRB obtained numerically. These expressions can be very useful in order to guide the choice of the data acquisition parameters.
Keywords :
Doppler measurement; acoustic field; acoustic variables measurement; data acquisition; laser velocimetry; parameter estimation; Cramer-Rao bounds; acoustic particle velocity; data acquisition parameters; laser Doppler velocimetry; sound field measurements; velocity parameters estimation; Acoustic beams; Acoustic measurements; Acoustic signal processing; Data acquisition; Frequency modulation; Laser velocimetry; Maximum likelihood estimation; Particle measurements; Signal processing; Velocity measurement;
Conference_Titel :
Sensors, 2008 IEEE
Conference_Location :
Lecce
Print_ISBN :
978-1-4244-2580-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2008.4716409
