active sonar

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.
References in periodicals archive ?
Torrey Science's products include two-way satellite communication terminals and modems, personal communications systems, video-imaging devices and underwater communications and high-resolution active sonar systems.
Torrey Science products include two-way satellite communication terminals and modems, personal communications systems, video imaging devices and underwater communications and high-resolution active sonar systems.
Torrey Science's products include satellite communication terminals and modems, personal communications systems, video imaging devices and underwater communications and high-resolution active sonar systems.
Torrey Science's products include two-way satellite communication terminals and modems, personal communications systems, video imaging devices and underwater communications and high resolution active sonar systems.
It is expected that mission equipment is to be set up comprising helicopter long-range active sonar and a torpedo launching system.
This is a portable, passive diver detection system that can be used independently as a complement to a Sentinel active sonar, enhancing the Sonardyne underwater surveillance proposal.
SPADES can be used standalone, or to augment a Sentinel active sonar, to provide an enhanced underwater surveillance solution.
As an acoustic warfare analyst, he operates, supervises and manages all passive and active sonar and acoustic sensors on board his submarine.
The project aims to protect marine mammals against the impact of active sonar deployed by European navies.
His topics include the sonar equations, active sonar sources, transmission loss, ambient noise, active target strength, statistical detection theory, methodology for calculating the recognition differential, variability and uncertainty, the cumulative probably of detection, and designing and evaluating sonars.
It also questioned why the supposed torpedo launch was not detected, despite active sonar equipment aboard the Cheonan, the journal said.