Title :
Sound velocity profile estimation: a system theoretic approach
Author :
Candy, J.V. ; Sullivan, E.J.
Author_Institution :
Lawrence Livermore Nat. Lab., California Univ., Livermore, CA, USA
fDate :
7/1/1993 12:00:00 AM
Abstract :
A system-theoretic approach is proposed to investigate the feasibility of reconstructing a sound velocity profile (SVP) from acoustical hydrophone measurements. A state-space representation of the normal-mode propagation model is used. It is shown that this representation can be utilized to investigate the so-called observability of the SVP from noisy measurement data. A model-based processor is developed to extract the required information, and it is shown that even in cases where limited SVP information is available, the SVP can be estimated using this approach. Based on this framework, investigations are made of model-based solutions to the sound velocity profile and related parameter estimation problems. In particular, a processor is designed that allows in situ recursive estimation of the sound velocity profile from simulated data
Keywords :
acoustic signal processing; hydrophones; observability; oceanography; parameter estimation; random noise; state-space methods; underwater sound; acoustical hydrophone measurements; feasibility; in situ recursive estimation; noisy measurement data; normal-mode propagation model; observability; oceanographic homography; parameter estimation; sound velocity profile; state-space representation; Acoustic measurements; Acoustic noise; Acoustic propagation; Data mining; Estimation theory; Observability; Parameter estimation; Process design; Sonar equipment; Velocity measurement;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.1993.236362
