RECEIVER OF EQUIPMENT DESIGNED FOR USERS OF SIGNALS OF GLOBAL SATELLITE RADIO NAVIGATION SYSTEMS

FIELD: satellite radio navigation. SUBSTANCE: proposed receiver relates to devices used in satellite radio navigation, namely in paths of primary processing of information of receiving indicators of two global satellite radio navigation systems synchronized with mutual error. Receiver of such system includes antenna, low-noise amplifier, mixer, intermediate frequency amplifier, reference thermostating generator, analog-to-digital converter. Receiver is supplemented with second antenna, two filters-preselectors, two low-noise amplifiers, SHF commutator, amplitude limiter, former of grid of reference frequencies, phase inverter, three hand-pass filters, second mixer, second intermediate frequency amplifier and two units of automatic gain control. Insertion of mentioned above units enables proposed receiver in contrast to prototype to perform simultaneously reception and processing of signals of space vehicles of satellite radio navigation systems CLONASS and NAVSTAR which makes it possible high-speed and high-precision digital processing of signals of spacecrafts by various classes of receiving indicators of satellite radio navigation systems. Usage of filters with linear phase-frequency characteristics in receiver in path of processing of signals of spacecrafts of systems GLONASS and NAVSTAR leads to increase of precision of indicators of receiver. Usage of adaptive analog-to-digital converter enhances noise immunity of receiver to non-Gaussian and pulse interference. Insertion of SHF commutator ensuring operation of internal and external antennas expands functional capabilities of receiver. EFFECT: increased precision and expanded functional capabilities of receiver. 4 dwg Изобретение относится к устройствам, используемым в спутниковой радионавигации, а именно в трактах первичной обработки информации приемоиндикаторов двух взаимно рассинхронизированных глобальных спутниковых радионавигационных систем (СРНС). В приемник аппаратуры потребителей сигналов глобальных СРНС, содержащий антенну, малошумящий усилитель, смеситель, усилитель промежуточной частоты, опорный термостатированный генератор и аналого-цифровой преобразователь, дополнительно введены вторая антенна, два фильтра-преселектора, два малошумящих усилителя, СВЧ-коммутатор, амплитудный ограничитель, формирователь сетки опорных частот, фазовращатель, три полосовых фильтра, второй смеситель, второй усилитель промежуточной частоты и два блока автоматической регулировки усиления. Введение перечисленных б