QUERY-BASED METHOD OF MEASURING RADIAL VELOCITY AND POSITION OF GLONASS GLOBAL NAVIGATION SYSTEM SATELLITE AND SYSTEM FOR REALISING SAID METHOD Russian patent published in 2014 - IPC G01S13/93 G01S19/01 

FIELD: physics, navigation.

SUBSTANCE: invention relates to radio engineering and specifically to navigation measurement, and can be used in a ground-based control system of an orbiting group of navigation spacecraft. A ground-based control station comprises a driving generator 1, a shift register 2, a phase-shift modulator 3, heterodynes 4, 11 and 33, mixers 5, 12, 17, 34, 43 and 44, a first intermediate frequency amplifier 6, power amplifiers 7, 10, 41 and 42, a duplexer 8, a transceiving antenna 9, third intermediate frequency amplifiers 13, 35, 45 and 46, a phase doubler 14, a phase halver 15, narrow band-pass filters 16 and 18, a Doppler frequency metre 19, correlators 20, 36, 47 and 48, multipliers 21, 49 and 50, low-pass filters 22, 51 and 52, optimising peak-holding controllers 23, 53 and 54, controlled delay units 24, 55 and 56, a range indicator 26, a switch 38, receiving antennae 39 and 40, and the satellite has a transceiving antenna 26, a duplexer 27, power amplifiers 28 and 32, heterodynes 29 and 59, mixers 30 and 60, a second intermediate frequency amplifier 31, a third intermediate frequency amplifier 61, a correlator 62, a threshold unit 63 and a switch 64.

EFFECT: broader functional capabilities and high noise-immunity, reliability of duplex radio communication between a ground-based control station and a GLONASS navigation system satellite and accuracy of measuring radial velocity and position of said satellite.

2 cl, 6 dwg