| Popis: |
To take full advantage of higher accuracy of SLR technique, the force model for LAGEOS must reach to comparable accuracy. In this paper, the following perturbations on LAGEOS are concerned (1) atmospheric tidal perturbation, (2) perturbation due to the earth’s rotational deformation, (3) direct perturbation arised from the oblateness of the moon, (4) indirect perturbation due to the oblate part of the earth. The mathematical models for these perturbations are put forward and the relative orders of magnitude are estimated. As a result, a more perfect force model is provided for LAGEOS orbit determination with centimeter accuracy. |
