FIELD: physics.
SUBSTANCE: invention relates to navigation meters and can be used for determining the linear speed modulus of ground vehicles. Linear speed meter comprises a clock generator, a frequency divider, two optical radiation sources, a thermal radiation receiver, a threshold device, an N-bit binary counter, a delay element, a N group of AND elements, a calculation unit.
EFFECT: technical result is provision of autonomous measurement of module of relative linear speed of object with high accuracy.
1 cl, 1 dwg
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