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In some design solutions, the application of rigid fitting of an aerial will not guarantee optimum operating conditions of a communication device. Rigid fitting of directional aerials on an object dynamically changing its position may lead to an interruption of the radio signal transmitted by the device. Due to the increasing popularity of small flying objects it has become necessary to implement better control over unmanned flying objects. One of the possibilities of such control is to equip drones with transponders that allow identification of objects fitted with such devices in the airspace. Active transponders ensure identification of the greatest range of flying objects. Transponders of this type use directional aerials of a high range of the transmitted signal. Components of this type are used in, inter alia, air traffic control (ATC) [Gotfryd, Pawłowicz and Pitera 2015].

journal of mechanical and transport engineering

The application of a test stand modeling the inverted pendulum phenomenon in the investigations of the methods of stabilization of the aerial mast position