FIELD: physics.
SUBSTANCE: system comprises not less than three ultrasonic radiators placed in a capsule over the helmet of the operator, four helmet-mounted ultrasonic receivers, not less than one ultrasonic receiver of a compensation channel lying in the immediate proximity of the helmet, four signal amplifiers for the helmet-mounted receivers, four signal delay time measuring devices for the helmet-mounted receivers, a signal amplifier for the compensation channel and a signal time delay measuring device for the compensation channel, a multiplexer, a signal conditioner, a clock unit and an onboard computer.
EFFECT: high rate of outputting coordinates of the helmet and high noise-immunity to re-reflected signals of the previous period.
3 cl, 6 dwg
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