时空概念中的椭球改正

ON THE ELLIPSOIDALL CORRECTIONSIN SPACE-TIME CONCEPT

This paper is an extension of the reference literature1] and2]. first it forms some frames of the ellipsoidall corrections of the disturbing field elements. such as time varia- tion of geoidal height. of deflection of the vertical. of gravity anomaly and of gravity potential. in space-time gravity field of the earth. The frames not only perfect in theory the solving process for space-time geoidetic boundary value problem. but also will be of the practical value to us along with unceasing increase of repeated observations. Theo- retical estimation for the ellipsoidall corrections of time variation of geoidal height and of deflection of the vertical is done in this paper. The results indicate that the ellipsoi- dall correction of time variation of geoidal height is less 1 mm and of timelike anomaly of deflection of the vertical may reach the maximum value of 0.2". But. the conclusions remain to be verified in practice.