Pulse Laser Range Finder for Military Applications

The introductory part of the paper briefly explains factors of armed struggle and describes in more detail the technical factor involving the weapon efficiency increase obtained through the improvement of the sighting device, where the laser range finder is applied. Presented are some characteristics of the laser range finder which is an integral part of the M-84 fire control system. The basic concept of the laser range finder is analyzed. Special attention is paid to the analysis of the characteristics of the transmitting and receiving parts. The impact of the flash supply voltage change on the number and energy of the emitted laser pulses is analyzed. The influence of temperature on the generation of the laser beam is also analyzed. The module of the normalized transfer function of the receiver was experimentally determined, and the equivalent bandwidth of the receiver calculated. For the given detection probability of the useful signal and the probability of the number of occurrences of the false signal the required minimum signal/noise ratio of the receiver was calculated. The signal/noise ratio of the receiver for different meteorological visibility conditions was calculated by means of numerical simulation. The influence of the atmosphere on the propagation of the emitted laser radiation was also analyzed. The performance of the analyzed laser range finder fully meets the set standards. Full exploitation of the obtained results is possible on the battlefield, if weather conditions are permanently monitored and taken into account at the time of application in particular area. At the same time, it is possible to actively jam the adversary by using artificial fumes creating devices.