FIELD: physics, optics.
SUBSTANCE: invention relates to optical instrument making. A method of locating or detecting an object using an active pulsed device, which includes a receiving electro-optical converter (EOC) and a laser emitter which generates short pulses for illuminating an object, reflections from the object of which are summed in a frame of the EOC, wherein after each generation of a short pulse for illuminating an object with a given duration τ, the method comprises periodically turning on the EOC for a time π through a given delay time t3 with frequency fg=1/(π+τ) for a given time θ, wherein the number of instances of turning the EOC per pulse is selected not greater than a value Kmax=(t3Kmax-t3)/(τ+π), where t3Kmax=(1/f-π) is the maximum delay time for turning on the EOC for the laser emitter which generates short pulses for illuminating an object with frequency f, t3 is the delay time of turning on the EOC until the beginning of the period of time θ.
EFFECT: obtaining image definition and brightness with a high scene depth.
3 dwg
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Authors
Dates
2014-11-20—Published
2012-12-27—Filed