active sonar的意思|示意

Active sonar refers to a type of sonar technology which emits sound waves from an external source and then listens for the returning sound waves. This type of technology is used to detect the presence of underwater objects.

Active sonar is often used by naval vessels to detect submarines and other submerged objects. This technology works by using sound waves which are emitted underwater and then listening for the echo of the sound waves as they bounce off any underwater objects. This information is then used to produce a sonar map which shows the location of the objects.

Active sonar is also used for various scientific research applications. This technology is used to collect data about ocean floor topography, on marine life, and even to search for lost objects such as wrecked ships and downed airplanes.

Active sonar can also be used for navigation. By emitting sound waves and monitoring the returning sound waves, the location of the sonar source can be accurately determined. This technology is used in the marine navigation systems to detect and avoid obstacles ahead.

Active sonar is a powerful tool for gathering information. Its use can be beneficial for navigation, scientific research, and even military applications. Its usefulness and application, however, must be weighed against any potential environmental effects.