Water level and wave meter eliminates spurious echoes - using sea-bed press. measurements if echo sounding path is disturbed

摘要

The meter is mounted in a carrier near the seabed. The results of the two types of measurement are evaluated together so that the spurions echos obtained during sounding with relatively large wave heights can be eliminated using the press. and press. fluctuation damping at relatively low wave heights. The press. measurement controls a variable depth aperture via the static water press. and the echo sounding system press. variations. This results in the evaluation of only those echos from the water surface. The logic passes the sounding measurements to the analyser if the echo sounding path is undisturbed, otherwise it passes the press. measurements.