VELOCITY METRE Russian patent published in 2013 - IPC G01S13/60 

FIELD: radio engineering, communication.

SUBSTANCE: velocity metre includes a transceiving antenna, a circulator, a microwave filter, a mixer, a phase changer, a microwave generator, an amplifier, a modulator, a generation zone automatic tuning unit, a Doppler frequency metre and a tracking frequency-digital converter, a computer for calculating the longitudinal and vertical components of velocity, ground velocity and drift angle, a unit for determining, in frequency form, a correction signal caused by wind velocity and direction error, and a display. The unit for determining, in frequency form, a correction signal caused by wind velocity and direction error includes a sea force switch, a unit for inputting flow velocity and direction, wind velocity and direction, two converters for converting rotational speed to pulse frequency, two rectangular pulse former, a pulse former with reference frequency of 100 Hz from sinusoidal voltage with frequency of 400 Hz, two frequency subtractor circuits with output stages.

EFFECT: increased accuracy of measuring velocity.

2 cl, 2 dwg