The combined adjustment of astro geodetic and space geodetic networks is of great significance for checking, controlling and strengthening the astro geodetic network, and for establishing and extending the geocentric coordinate system.

• 天文大地网与空间大地网联合平差 ,对于检核、控制与加强天文大地网以及建立与扩展地心坐标系 ,都具有重要意义。