OCEAN DEPTH SOUNDING FROM THE AIR BY LASER BEAM.

摘要

PCT No. PCT/AU81/00137 Sec. 371 Date May 18, 1982 Sec. 102(e) Date May 18, 1982 PCT Filed Sep. 21, 1981 PCT Pub. No. WO82/01075 PCT Pub. Date Apr. 1, 1982.A system of ocean depth sounding from the air which consists in projecting an infrared beam (2) down normal to the ocean surface along a forward travel path to backscatter a signal to a receiver (10) to measure distance to the ocean surface, and simultaneously projecting down a green beam (1) to sweep across the direction of travel to backscatter a series of signals from the ocean bottom over an extended width to a second receiver (11), adjusting the receiver gain from the green signal to achieve optimum ocean bottom measurement and calculating ocean depth from the infrared and green signal differential.