Simulating echograms
Original version
This report is not to be quoted without prior consultation with the General Secretary.Abstract
Simulation of echo data can be useful for verifying echo integrators realized in computer software. A model is presented which associates
distinct stochastic processes with each of the following: bottom depth; number, depth, and orientation of fish in the beam; and background noise.
A measure of realism is preserved, perhaps, by (1) simulating echo registration with an ideal circular transducer of 8-deg beamwidth, moving forward at 10-knots speed; (2) allowing individual fish to be tracked
through the beam; and (3) using measurements on fish to describe the target strength. Attendees may form their own opinion of the success of the
simulation from examples to be shown - in colour.