Recommendation 2 of the 15th CCTF (2001)

Time and frequency comparisons using Global Positioning System (GPS) phase and code measurements

The Consultative Committee for Time and Frequency,

considering that

  • the International GPS Service (IGS) has established an infrastructure of a global observing network, a data distribution system, a robust analysis methodology and high-quality products,
  • a joint IGS/BIPM Pilot Project has been established to study time and frequency comparisons using GPS phase and code measurements,
  • calibration methods are being developed to exploit fully the capabilities of these techniques for time comparisons;

fully supports the joint IGS/BIPM Pilot Project;

and recommends that

  • timing laboratories participate in the IGS by installing appropriate GPS receivers and by following the IGS standards and procedures to the greatest extent possible,
  • appropriate methods be exploited to calibrate the instrumental delays relating the receiver internal reference to the external clock,
  • the IGS reference for clock products be aligned as much as possible with Coordinated Universal Time (UTC),
  • the timing laboratories and the BIPM take the necessary steps to allow the IGS to achieve this goal.

DOI : 10.59161/CCTF2001REC2E

The reader should note that the official version of this Resolution is the French text

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