We tried to determine as accurately as possible the geocentric coordinates of the Hvar Doppler station in the coordinate system of broadcast and in one of precise ephemerides, on the basis of Doppler observations from the project IDOC-82 and of broadcast ephemerides alone. With this aim in view it was necessary in the first place to calculate for the project IDOC-82 two new variations of multipoint solutions by means of broadcast ephemerides (MPBE), taking into account 11 stations, i.e. 10 suitable stations. Coordinates X, Y, Z for the Hvar station contained in this way were thereupon converted from BE-system by means of
three-dimensional Helmert transformation and by using available identical stations from previous projects EDOC-2, ERIDOC and ALGEDOP-82 for all of which multipoint solutions with precise ephemerides (MPPE) are dsposable.
A series of common antenna observations using different Doppler receiver pairs has been evaluated with the Cross Doppler Count method. Results for four pairs of Magnavox MX 1502 and one pair of JMR 1A type receiver evaluations are presented. It is shown that the error interoduced by the receiver noise into the 4.6s Doppler counts is generally less than 0.04/2 count RMS (3 cm/2).