Three kinds of astrogeodetic geoid maps for Japan are presented: one referred to the global (18, 18) geoid of the 1973 Smithsonian Standard Earth (3) (SE 3), one referred to the ellipsoid of the SE 3 system, and one referred to the reference ellipsoid of the Tokyo datum. Interpolatins of the deflectin of the vertical are carried out by a least squares estimatin method. The geoid height differences obtained are compared with solutions of satellite-derived station positions. |