Abstract

A method for distance determination with the help of range-gated viewing systems is proposed for an arbitrary shape of the illumination pulse. The method is based on finding the maximum of the reflected pulse energy as a function of the delay time. At the equal pulse and gate durations, there is a strict maximum, which turns into a plateau when the pulse is shorter than the gate duration. The delay times corresponding to the strict maximum or the far boundary of the plateau are directly related to the distance to an object. These results are confirmed by the numerical study of the dependence of the detected energy on the delay time for the different pulse shapes. Experimental verification of the proposed method showed accuracy 1–2 m in a measuring range of 15–120 m. The obtained results can be useful in the development of 3D vision systems.

© 2017 Optical Society of America

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