| 摘要 |
<p>The invention relates to a method of guiding an underwater structure about a submerged, sound-reflecting object. A dual-ranging sonar is mounted on a surface craft that tows the structure. The structure carries at least two spaced-apart, electro-acoustic transducers for consecutively transmitting sound beams into the body of water and for detecting the echoes of the sound beams for recordation by the sonar. The beams are directed mostly downwardly and toward each other, and the records made by the sonar are used by the surface craft to maneuver the structure about the submerged object. The records can be used to provide a continuous display of the position of the structure relative to the submerged object.</p> |
