Description: One of the main problems arising before divisions of air defense of Ground forces in a zone of carrying out the antiterrorist operation (ATO) is ensuring the required accuracy of determination of coordinates of small-sized UAVs, capture on maintenance and destruction or prevention of execution of a fighting task by it. Therefore searching of technical and theoretical solutions of ensuring the required accuracy of determination of coordinates of small-sized UAVs is very relevant, use of informational tools which use methods of a passive radar-location also belongs to such decisions. In article assessment of accuracy of determination of coordinates of radio of the radiating purposes by a differenceranging method in a relative frame of reference of a passive radar-location based on antiaircraft missile systems of small range, for the purpose of improvement of determination of coordinates of the UAV in a zone of conducting ATO is carried out. Follows from the analysis of the provided data that biases of coordinates at difference-ranging a method are unessential and at some provisions of the UAV equal to its sizes. These mistakes decrease at an approximation to receiving positions. The received dependences allow choosing an arrangement of places of acceptance, optimum from the point of view of receiving minimum biases of coordinates of the UAV, to improve ability of well-timed detection of the UAV of the opponent that will allow increasing effectiveness of his destruction.
Keywords: triangulation, passive radar-location, UAV, difference-ranging method, anti-terrorist operation (ATO) zone