Forward looking echosounder

摘要

A forward looking echosounder uses a non-scanning forward looking transducer inclined from the horizontal at a 45 DEG angle. The forward looking transducer produces a set of acoustic data signals indicative of echo signals received along the central axis of the sonic beam as produced by the transducer. Distance and depth coordinates are used in conjunction with vessel speed and pitch angle to determine where the source of the received echo is located relative to the moving vessel. This information is then displayed in a quasi-real time display format.