METHOD TO DETERMINE NON-RADIAL PROJECTION OF TARGET SPEED VECTOR Russian patent published in 2014 - IPC G01S13/58 

FIELD: measurement equipment.

SUBSTANCE: invention relates to radiolocating methods to determine speed of a moving object and may be used in speed meters of moving objects, vehicles, etc. A target is simultaneously radiated with the help of two spaced antennas by probing signals of two different frequencies, signals reflected by the target are reflected, the difference of frequencies of received signals is determined, and using the value of difference in frequencies of received signals they determine the non-radial projection of the target speed vector, at the same time they use two additional antennas for radiation of the target by two auxiliary monochromatic signals of differing frequencies. Auxiliary signals reflected from the target are received, and using the formula they determine the projection of the target speed to the direction of the vector D, determined according to the formula where c - light speed; f₁ and f₂ - frequencies of the first and second probing signals; f₃ and f₄ - frequencies of the first and second auxiliary signals; F₁ and F₂ - frequencies of the first and second received signals displaced relative to f₁ and f₂; F₃ and F₄ - frequencies of received additional monochromatic signals displaced relative to f₃ and f₄; and - single vectors directed to the target from points of location of accordingly the first and the second transmitting antennas; and - single vectors directed to the target from the points of location of appropriate additional transmitting antennas; - a single vector directed to the target from the point of location of the receiving antenna.

EFFECT: possibility of determination of non-radial projections of a target speed vector with low requirements to coherence of applied signals.

3 cl, 1 dwg