CONTACTLESS DISTANCE METER Russian patent published in 2019 - IPC G01S13/58 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment, in particular to devices for measuring distance traveled by ground vehicle using Doppler effect. Proximity distance meter comprises a microwave generator of electromagnetic oscillations with wavelength λ₀, a directional coupler, a circulator, an antenna directed forward at an angle α in direction of vehicle movement, two mixers, a computing unit, a delay line for λ₀/2, a comparator and a pulse counter, interconnected in a certain manner, wherein in the computing unit the distance traveled is determined by the formula L=nλ₀/2cos(α), where n is current reading of pulse counter.

EFFECT: high accuracy of measuring the path traversed by a ground vehicle.

1 cl, 3 dwg