Way to restore the seabed at discrete depth measurement THROUGH sonar mounted on a mobile offshore facilities, and systems for measuring depth and bottom topography RECOVERY

摘要

1. A method of reducing the seabed at depths of measurements by sonar installed on mobile offshore facilities, comprising depth measurement with determination of corrections due place sonar installation means, determining the vertical distribution of the velocity of sound in water by receiving the reflected signal data of observation points triangulation with subsequent interpolation recovery landforms bottom surface of the bottom construction, when determining the correction supplement flax measured Doppler shift frequency of the reference signal lags the sonar, determine the speed of the movable object through the marine receiver-indicator of satellite radio navigation systems and, thus determining the vertical distribution of the velocity of sound in water is performed on the time series sound density energy reflected from internal inhomogeneities in the aqueous medium and the bottom, by recording all incoming signals scattered from internal inhomogeneities marine environment from the time the sound pulse before sending mo ment arrival of the signal reflected from the bottom, to form a temporary number density of sonic energy reflected from internal inhomogeneities sea bottom environment and according to the relation U (Z = 0, t), where Z is the depth at time points t, and the speed of sound in water, C (Z) is determined by solving an inverse scattering problem, further recorded low frequency waves excited by artificially pumping high-frequency waves, terrain shape recovery is performed by the relief height relative changes in accordance with the inequality