DEVICE FOR MEASURING HEAVING MOTION OF SHIP Russian patent published in 2002 - IPC

FIELD: compensation for effect of heaving motion on operation of single-beam and multi-beam echo-sounders and other units and systems of surface and underwater objects. SUBSTANCE: proposed device includes linear accelerometer which is oriented vertically, subtracter, first and second aperiodic elements performing function of integrators, feedback integrator, spectrum meter and control unit which changes time constants of first and second integrators in accordance with change in present magnitude of prevailing frequency of heaving motion, thus making it possible to maintain their magnitudes at minimum permissible level ensuring preset magnitude of amplitude and phase error of integration. EFFECT: enhanced efficiency. 1 dwg