DEVICE FOR MEASURING, IN A PREDEFINED PLANE, THE POSITION OF A MATERIAL DEPOSITED AT THE BOTTOM OF A BODY OF WATER AND ASSOCIATED METHOD

摘要

The present invention relates to the field of apparatuses used to measure magnetic quantities and, more specifically, to a device for measuring, in a predefined plane, the position of a material deposited at the bottom of a body of water, characterised in that it includes: a submersible laser transmitter; and a buoy (6) comprising a first lower part (7) intended to be at least partially submerged and an upper part (8) intended to be at least partially above the water when the buoy (6) is floating on the water. The aforementioned first part (7) comprises a lower surface (9) arranged to face the bottom of the body of water when the buoy is floating, said lower surface (9) being at least partially covered by an array of photodetectors (10) that can detect the laser radiation emitted by the above-mentioned transmitter.