The sonar equations

Abstract

The objective of this chapter is to illustrate the basic principles of sonar performance modeling. This is achieved by deriving the most important passive and active sonar equations, each accompanied by a worked example. These worked examples are intended to be didactic rather than realistic: enough realism is included in them to illustrate the underlying principles, but no more--where there is a conflict between simplicity and realism then simplicity is preferred, except at the expense of the principle itself.1