This book introduces sonar system and acoustic channel model, average
energy channel, coherent multipath channel, the theoretical basis for
the stochastic time-varying space-variant channel, slowly time-varying
coherent multipath channel, and reverberation channel. Based on the
basic theory of underwater acoustic channels and the various
characteristics of the marine acoustic environment factor, this textbook
aims to help students understand the impact of the marine acoustic
channel on the sonar system. It helps students to grasp underwater
acoustic signal processing principles and obtain the ability to solve
practical problems in underwater acoustic channel engineering. Finally,
it aims at laying a foundation for the further sonar system design. This
textbook is recommended for graduate or undergraduate students in the
field of sonar signal processing, underwater acoustic engineering, as
well as some related subjects of marine technology.