음파의 반사를 이용해 수중 물체를 탐지하거나 수심을 측정하는 장치 또는 체계.
A system or device used to detect underwater objects or measure water depth by emitting sound pulses and analyzing their reflection.
예문:
"The submarine's sonar detected an unidentified object approaching from the north."
"Fishermen often use portable sonar to find large schools of fish."
"The research vessel used side-scan sonar to map the topography of the seafloor."
돌고래나 박쥐 등이 음파를 발사하고 반사되는 소리를 들어 위치를 파악하는 생물학적 능력.
The natural biological system of echolocation used by animals such as dolphins and bats to navigate and find food.
예문:
"Dolphins emit high-frequency clicks as part of their natural sonar system."
"Research shows that noise pollution can interfere with the sonar of marine mammals."