A combined adjustment(phase I) of the nationwide astro geodetic and GPS geodetic networks was accomplished early in 1998. The paper reports the principles adopted and the models used in the adjustment and presents results.

• 全国天文大地网与全国 GPS大地网联合平差 (I期 )于 1 998年初完成。 本文报告平差采用的原则和模型 ,并提出平差结果。