Title :
Automatic detection of the number of raypaths
Author :
Jiang, Longyu ; Mars, Jérôme I.
Author_Institution :
GIPSA-Lab., Grenoble INP, Grenoble, France
Abstract :
In this paper, an Exponential Fitting Test (EFT) is presented in the context of ocean acoustic tomography for detecting the number of the raypaths. It is based on the fact that the profile of the ordered eigenvalues fits an exponential law for white Gaussian noise and small samples. The number of raypaths could be detected when a mismatch occurs between the observed profile and the exponential model. Its performance is studied with simulated experiment datas. EFT works for the case of small number of samples when information theoretic criterias fail.
Keywords :
Gaussian noise; acoustic tomography; eigenvalues and eigenfunctions; oceanographic techniques; ray tracing; underwater sound; white noise; automatic detection; eigenvalues; exponential fitting test; exponential law; ocean acoustic tomography; ray path; white Gaussian noise; Acoustics; Covariance matrix; Eigenvalues and eigenfunctions; Indexes; Noise; Oceans; Sensors;
Conference_Titel :
OCEANS 2011
Conference_Location :
Waikoloa, HI
Print_ISBN :
978-1-4577-1427-6
