Acoustic location in air was used before the introduction of radar. ![]() ![]() Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels active sonar is emitting pulses of sounds and listening for echoes. Sonar (sound navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. Sonar image of the Soviet Navy minesweeper T-297, formerly the Latvian Virsaitis, which was shipwrecked on 3 December 1941 in the Gulf of Finland
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |