Methods of constructing controlled antenna unit for mobile satellite communication and navigation systems were analyzed. Advantages and disadvantages of the antenna module with antenna types "reflector antenna" and "phased array antenna" of such systems have been analyzed. A simulation model of the control positioning antenna unit with reflector antenna for use in mobile satellite communication and navigation was obtained. Simulation parameters of antenna unit’s control system was carried out. The control system, which has been obtained, allows positioning of the antenna unit to the azimuth angle range 0 ... 2π.
mobile digital satellite system, reflector antenna, simulation, control system, positioning