FIELD: evaluating altitude profile of object.
SUBSTANCE: proposed device has distance sensor and deviation unit. Distance sensor is provided with radiating transmitter and receiver. Altitude profile of object is evaluated in data processing device using output data of distance sensor and respective deviation angles of transmitted light beams. Deviation unit is provided with transmission optics and actuating facility. Transmission optics is periodically set in deviation motion by means of actuating facility. Receiving optics is disposed in front of receiver. Radiation axes of transmitted and received light beams are located at certain distance from each other.
EFFECT: enhanced immunity to external disturbing factors.
30 cl, 5 dwg
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