vertical obstacle sonar

vertical obstacle sonar

[′vərd·ə·kəl ¦äb·stə·kəl ′sō‚när]
(engineering)
An active sonar used to determine heights of objects in the path of a submersible vehicle; its beam sweeps along a vertical plane, about 30° above and below the direction of the vehicle's motion. Abbreviated VOS.
Mentioned in ?