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The numerical estimation of performance of battle task in mountainous region by using Unmanned Aerial Vehicles (UAV) reconnaissance flight is very important for theatre-of-war planning of battle operations. In paper, the numerical estimation method of a task support success of UAV reconnaissance flight in mountainous battle condition has been offered and considered. This method is based on the probabilistic approach. The battle support (security) is activities complex realized for the purpose of creation of the favorable conditions for successful battle activities and enemy impact degradation for any conditions. The battle support includes reconnaissance, electronic warfare, tactical camouflage, engineering support, radiation-chemical and biological protection, aiming control and astrogeodetic support, hydro-meteorological support, protection. The minimum of permissible safety height of UAV flight by using geoinformation system (GIS) technology has been determined. Only the UAV tactic reconnaissance flight is considered in paper. For solution of this task, the various input parameters have been took into account: security events set of the troops, security events set of UAV reconnaissance flights, set of the UAV performance characteristics, set of UAV operating conditions, set of mountainous landscape characteristics. The calculations have been carried out for the specific conditions of one of the mountainous broken ground region of the Azerbaijan Republic.K e ywor d s : Unmanned Aerial Vehicle; reconnaissance flight; probabilistic parameters; Geoinformation System; mountainous region.

During war activities, the evaluation of invisible areas and military armours in mountainous terrain is very important for assessment of operational-tactical situation in battlefield. This information can be used for prevention of an enemy sudden attack. In given paper, the quantitative method of the invisible areas assessment and military objects in mountainous terrain are developed and offered by using unmanned aerial vehicle (UAV). The probabilities of invisible area or enemy object detection are calculated by using 1 and n UAVs. Previously obtained data by ArcGIS software (GIS technology) has been used for calculations and evaluations the number of invisible areas and military objects. The analysis of the dependence of revealing effectiveness, localisation areas and military objects on the number of UAVs has been carried out. It is more efficient to use one UAV for quantitative analysis of invisible areas, but it is more efficient to use several UAVs for detection of armoured vehicles and military objects. Our experiments in mountainous conditions had shown that at flight height 300 m and battle-front 2.5 km putting 3-5 UAVs is real. In this case, all of them perform operational mission and return to base. Finally, from the outcome of this study, the offered method can be applied for any mountainous conditions, for creation of a simulation and training UAVs war-game software.

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The various types of electron-optical supervisory control systems (SCS) have been used in Armed Forces of many advanced countries. The mission of these SCS is to supervise day and night enemy troops, technics and weapon systems, frontier intruders with high precision a great and middle distance. The SCS optimal deployment in mountainous terrain makes possibility to use rationally SCS number, because SCS has very much costs. Using the rationally SCS number we can reduce a necessity of the specialist number. Also, it accelerates comander's correct decision making. The optimal deployment of SCS on a terrain is one of important task of military reconnaissance. The specific character of such task is that the necessary for continuing surveillance and control military objects can be located in specific zones of terrain (for examples, in canyons, along of river etc.). Accessible places of SCS set are situated on some distance from these zones. The number of SCS is limited; therefore, it is impossible to distribute theirs on the all set points. It is necessary to select such SCS set points that the zone observation range would be the largest. In present paper the mathematical model of the rationally deployment of technical observing systems in mountainous terrain has been developed and offered. The determination method of visibility level between selected terrain points has been developed. The assesment criterion of rationally deployment and the algorithm of fast solution have been offered. K e ywor d s : technical observing systems; mountainous terrain; rationally deployment; mathematical model.