METHOD OF RADAR MEASUREMENT OF DISTANCE Russian patent published in 2014 - IPC G01S13/34 

FIELD: measurement equipment.

SUBSTANCE: method is based on emission of a probing microwave signal with linear frequency modulation in direction of a reflecting surface, reception of the reflected signal in the point of emission, mixing of the received signal with the probing one, generation of the signal of beat frequency of the probing and reflected signals, measurement of this frequency and determination by the results of distance measurement from the point of emission to the reflecting surface as the value proportionate to the measured frequency, measurement of steepness of probing signal frequency retuning as the function of time, which has elapsed from the start of the retuning cycle, the result of measurement is recorded into the main memory of the device that implements the method, and the distance H from the point of emission of the probing signal to the reflecting surface is determined on the basis of the following ratio: $$H=\frac{F_b\left(t\right)\cdot C}{2\gamma \left(t\right)},$$ where H - measured distance; C-3·10⁸ m/s - speed of light; F_b(t) and γ(t) - beat frequency and steepness of returning of probing signal frequency as function of time counted from the start of the frequency retuning cycle.

EFFECT: improved accuracy of distance measurement.

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