TY JOUR TI ANALYSIS OF UNMANNED AIRCRAFT SYSTEMS AS A POTENTIAL PLATFORM FOR PLACEMENT OF A REPEATER RADIO IN THE INTERESTS OF THE SYSTEM EMERCOM KW unmanned aerial vehicle KW radio repeater KW apparatus classification KW methods of using the devices JO Problems of risk management in the technosphere AU Nesterenko, A.G. AU Shidlovsky, A.L. AU Galimov, A.F. PY 2016 IS 2016 PB Saint-Petersburg University of State Fire Service of Emercom of Russia