Comments on the Terrestrial Pole of Reference, the Origin of the Longitudes, and on the Definition of UTI (invited)
Abstract
The definition of a terrestrial reference pole (TRP) and of a Terrestrial Longitude Origin (TLO), by fixing the stations coordinates of an adopted network seems unrealistic. It is proposed that TRP and TLO be the realized origins of some specified service working in accordance with some stated principles. It is also proposed to clarify the definition of UT1 and to base it on some physical properties.
 Publication:

IAU Colloq. 56: Reference Coordinate Systems for Earth Dynamics
 Pub Date:
 1981
 DOI:
 10.1007/9789400984561_12
 Bibcode:
 1981ASSL...86..125G
 Keywords:

 Celestial Reference Systems;
 Earth Rotation;
 Geodetic Coordinates;
 Geodynamics;
 Longitude Measurement;
 Universal Time;
 Geophysics;
 Polar Coordinates;
 Geophysics;
 CELESTIAL REFERENCE SYSTEMS;
 EARTH ROTATION;
 GEODETIC COORDINATES;
 GEODYNAMICS;
 LONGITUDE MEASUREMENT;
 UNIVERSAL TIME;
 GEOPHYSICS;
 POLAR COORDINATES