Robotics is one such technology used today.
Sonar is a method of sound based ranging. Therefore as an object it is not subject to an antonym. There is the principal of radar which can also range, but it uses radio waves instead.
important and uprising clues about earths crust have been collected from the sea floor using sonar
sonar(sound navigation and ranging)
A sonar is Fitted into a ship to detect how deep the water is
bats
Submarine technology, sonar technology, and underwater-robot technology
Robotics is one such technology used today.
Sonar
SONAR
Sonar
Multibeam sonar technology is a offshore surveying tool used by hydrographic surveyors in navigational charting. It is primarily used in the fields of geology and oceanography.
sonar
To find out the ocean`s depth
sonar
Sonar.
Sonar provides detailed images of small areas of the ocean floor.