Geo-spatial Information Science

, Volume 8, Issue 1, pp 8–13 | Cite as

Application of geodetic receivers to timing and time transfer

  • Nie Guigen
  • Liu Jingnan


Two methods for smoothing pseudorange observable by Carrier and Doppler are discussed. Then the procedure based on the RINEX observation files is tested using the Ashtech Z-XII3T geodetic receivers driven by a stable external frequency at UNSO. This paper proposes to adapt this procedure for the links between geodetic receivers, in order to take advantage of theP codes available onL 1 andL 2. This new procedure uses the 30-second RINEX observations files, the standard of the International GPS Service (IGS), and processes the ionosphere-free combination of the codesP 1 andP 2; the satellite positions are deduced from the IGS rapid orbits, available after two days.

Key Words

GPS time and frequency transfer geodesy smoothing 

CLC Number



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Copyright information

© Wuhan University of Technology & Springer 2005

Authors and Affiliations

  1. 1.Research CenterWuhan UniversityWuhanChina

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