active sonar
McGraw-Hill Science & Technology Dictionary:
Top
active sonar
(′ak·tiv ′sō′när)
(engineering) A system consisting of one or more transducers to send and receive sound, equipment for the generation and detection of the electrical impulses to and from the transducer, and a display or recorder system for the observation of the received signals.
Related Videos:
Top
active sonar
Oxford Dictionary of the US Military:
Top
active sonar
A method developed in 1918 for locating a submarine or other underwater body by measuring its distance and direction by “bouncing” a sound signal off of it. Also known as asdic.
See the Introduction, Abbreviations and Pronunciation for further details.
Gale Encyclopedia of Espionage & Intelligence:
Top
Active SONAR
Mode of echo location by sending a signal and detecting the returning echo.
Post a question - any question - to the WikiAnswers community:
Copyrights:
McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
Read more
Oxford Dictionary of the US Military
The Oxford Essential Dictionary of the U.S. Military. Copyright © 2001, 2002 by Oxford University Press, Inc. All rights reserved.
Read more
