21/08/2021
The amplitude of the dolphins’ echolocation signals are highly range dependent; this amplitude increases as the target increases, R, in a 20 log(R) fashion to compensate for propagation loss. If a school of fishes, with plenty of sound distributors would be the echolocation target, the echoes from the school will be nearly constant with range as the dolphin closes in on it. This characteristic has similar effect as time-varying gain in bats and technological sonar when considered from a sonar system perspective (Wells et.
