| 摘要 |
Sonar apapratus which forms concentric hollow conical receiver beams having a common cone axis which is at a predetermined angle relative to the direction of travel of the apparatus as opposed to being coincident with it. A target indication received by a conical beam defines a circle upon which the target might lie. Multiple transmissions and detection of the target in other beams result in intersecting the circles to thereby limit the location of the target to one of two possible points, and one of which may be disregarded depending upon the operational mission.
|
