| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: receiver of signals of satellite radio-navigation systems GLONASS and Navstar comprises an antenna, an input feeder 1, a wideband filter-preselector 2, the first 3 and second 5 low-noise amplifiers, the first 4, second 9 and third 14 band filters, the first 6 and second 13 mixers, a frequency synthesiser 7, a reference thermostatted generator 8, the first 10 and second 15 amplifiers of intermediate frequency, a unit 11 of complex conversion of a signal, a unit 12 of automatic regulation of amplification, the first 17 and second 24 threshold units, a correlator 16, the first 18 and second 26 keys, a selector 19 of phase-shift keyed signals, the first 20 and second 22 spectrum analysers, a phase doubler 21, a unit 23 of comparison, a delay line 25, the first 27 and second 29 narrow-band filters, a multiplier 28 and a phase detector 30.EFFECT: improved selectivity and noise immunity of a receiver by selection of phase-manipulated signals and provision of symmetry of frequencies ?and ?of a frequency synthesiser relative to bearing frequency ?of received phase-manipulated signals.2 dwg |
