TY - CHAP A1 - S. Georgakarakos A2 - V. Trygonis A3 - J. Haralabous ED1 - N. Z. Kolev Y1 - 2011-09-12 PY - 2011 T1 - Accuracy of Acoustic Methods in Fish Stock Assessment Surveys N2 - The book is an edited collection of research articles covering the current state of sonar systems, the signal processing methods and their applications prepared by experts in the field. The first section is dedicated to the theory and applications of innovative synthetic aperture, interferometric, multistatic sonars and modeling and simulation. Special section in the book is dedicated to sonar signal processing methods covering: passive sonar array beamforming, direction of arrival estimation, signal detection and classification using DEMON and LOFAR principles, adaptive matched field signal processing. The image processing techniques include: image denoising, detection and classification of artificial mine like objects and application of hidden Markov model and artificial neural networks for signal classification. The biology applications include the analysis of biosonar capabilities and underwater sound influence on human hearing. The marine science applications include fish species target strength modeling, identification and discrimination from bottom scattering and pelagic biomass neural network estimation methods. Marine geology has place in the book with geomorphological parameters estimation from side scan sonar images. The book will be interesting not only for specialists in the area but also for readers as a guide in sonar systems principles of operation, signal processing methods and marine applications. BT - Sonar Systems SP - Ch. 13 UR - https://doi.org/10.5772/18631 DO - 10.5772/18631 SN - PB - IntechOpen CY - Rijeka Y2 - 2019-11-15 ER -