Patterns in Formation of the Visibility Zone of Active-Pulse Vision Systems at a Fixed Delay Distance Taking Into Account the Shape of the Illumination Pulse

Herein, the spatial-energy profiles (SEPs) of the recorded signal were numerically studied at different shapes of the illumination pulse and ratios between the durations of illumination τ p and registration τ g pulses at a fixed delay distance. It was established that at τ p < τ g and τ p = τ g the characteristic visibility distance ranges do not depend on the shape of the illumination pulse. For their determination it is possible to use the previously obtained expressions for square wave illumination pulses. As a rule, for the cases considered at τ p > τ g SEP is a convex asymmetric curve with one maximum in a point S max . For the simplest forms of illumination pulses designed by triangles or trapezoids the analytical expressions were obtained, allowing calculation of the value S max from the known delay distance and illumination pulse duration. For the correlation τ p > τ g , the method of the calibration constant was also proposed to determine the distance S max in the case of a real illumination pulse shape.