Newly realization of celestial reference frame by stable sources selection

When the motion of celestial bodies and some geophysical phenomena is described, a high precision and steady celestial reference system(CRS) is needed. An ideal CRS is equivalent to an inertia reference system. Celestial reference frame(CRF) is the realization of ideal CRS, the stability of which will directly determine the precision of celestial objects' motion and some geophysical phenomena. Based on nearly 30 years astrometric/geodetic observations of global IVS( international VLBI service) during 1979 to 2007, it is processed and analyzed the data using Calc_Solve software system on Shanghai Astronomical Observatory, CAS. Then it is acquired a series of coordinates(right ascension and declination) of radio sources, which can be made up to time series for our research. Stability of sources were checked and analyzed by the time series, a set of standards for the selection of stable sources is worked out, and then a set of lists of stable sources acquired. At last, a newly stable CRF are realized by 173 stab