Active wideband higher-order raypath separation in multipath environment.
Multiple raypaths propagation is caused by reflection and refraction at the surface and the bottom of the water column. In this study, an active wideband higher-order separation is proposed, which enables the separation of raypaths interrupted by colored noise (as traditionally found in ocean environments) in the angle-vs-time domain. A comparative study shows that the proposed algorithm achieves a more accurate separation than other algorithms. Moreover, with the proposed approach, it is not necessary to assume that the number of sensors is larger than that of the sources. Furthermore, numerical results validate the noise suppression property of the proposed method.
The Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China jly@seu.edu.cn, hongyaping@126.com.
Longyu
L
Jiang
The Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China jly@seu.edu.cn, hongyaping@126.com.
Yaping
Y
Hong
Institut des Sciences de la Terre, Université Joseph Fourier, Centre National de la Recherche Scientifique, 1381 Rue de la Piscine, Saint-Martin d'Hères, France philippe.roux@ujf-grenoble.fr.
Philippe
P
Roux
The Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China jswu@seu.edu.cn, shu.list@seu.edu.cn.
Jiasong
J
Wu
The Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China jswu@seu.edu.cn, shu.list@seu.edu.cn.
Huazhong
H
Shu