The detection, classification and localisation performance of a sonar depends on the environment and the receiving equipment, as well as the transmitting equipment in an active sonar or the target radiated noise in a passive sonar.
O rendemento da detección, clasificación e localización dun sonar depende da contorna e do equipo receptor, ademais do equipo emisor nun sonar activo ou do ruído radiado polo branco nun sonar pasivo.