Title :
Data association from two acoustic-magnetic measurement sites
Author :
Dassot, Gilles ; Blanpain, Roland
Author_Institution :
CEA, Centre d´´Etudes Nucleaires de Grenoble, France
Abstract :
This paper is dealing with the localisation problem of acoustic-magnetic sources moving in straight line at constant speed. Our technique is based on the association of acoustic Doppler and magnetostatic methods when two measurement sites are available. In that case the problem is not fully observable and a ghost solution remains. We present an extended Kalman filter with an extensive state vector and a linear observation equation. This structure ensures high convergence properties in case of poor initialisation as is shown on a comparative example
Keywords :
Doppler measurement; Kalman filters; acoustic radiators; acoustic signal detection; acoustic signal processing; acoustic variables measurement; convergence of numerical methods; data analysis; filtering theory; magnetic variables measurement; magnetostatics; nonlinear filters; sensors; acoustic Doppler method; acoustic Doppler shifts; acoustic-magnetic measurement sites; acoustic-magnetic sensors; acoustic-magnetic sources; constant speed; data association; extended Kalman filter; ghost solution; high convergence properties; linear observation equation; localisation problem; magnetostatic methods; poor initialisation; state vector; straight line motion; Acoustic emission; Acoustic measurements; Acoustic sensors; Azimuth; Equations; Magnetic sensors; Magnetic separation; Magnetostatics; Matched filters; Velocity measurement;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555528
