DETERMINATION OF DISTANCES BY ACTIVE-PULSE VISION SYSTEMS TAKING INTO ACCOUNT THE ILLUMINATION PULSE SHAPE
Abstract
For active-pulse vision systems with illuminating pulses of triangular and trapezoidal forms the range-energy profiles (REP) of the signal have been obtained with a change in the time delay between the leading front of the strobe pulse and the illuminating pulse. It is established that if the duration of the illuminating pulse Δtlas is less than or equal to the duration of the image convertor strobe pulse ΔtIC, the expressions for the characteristic distances coincide with the case of pulses of a rectangular shape and they can be used to determine the distance to objects. In the case of triangular-shaped illuminating pulses at Δtlas > ΔtIC the REP acquires a bell-like shape. For pulses of a trapezoidal shape the REP has a bell-shaped shape with or without a plateau-like region. An empirical method for determining the characteristic distances to the maximum of the REP and the boundary points of the plateau-like region which are then used to calculate the distance to the object has been proposed. With the use of calibration constants a method for determining the distance to the object has been proposed, and its operability is experimentally confirmed.
About the Authors
V. A. Gorobets
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
B. F. Kuntsevich
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
D. V. Shabrov
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
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Review
For citations:
Gorobets V.A., Kuntsevich B.F., Shabrov D.V. DETERMINATION OF DISTANCES BY ACTIVE-PULSE VISION SYSTEMS TAKING INTO ACCOUNT THE ILLUMINATION PULSE SHAPE. Zhurnal Prikladnoii Spektroskopii. 2017;84(5):794-802. (In Russ.)
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