The conditions required to construct, a quasi-inertial celestial reference frame are discussed, and several cases, in which if the ground-basedobservation can satisfy, arc enumerated.
本文叙述了建立准惯性天球参考架应满足的条件,列举了几种地面观测能否满足这些条件的情况。
2
The summit brought together representatives of civil aviation authorities, ground-based and in-situ observation experts, modellers and satellite remote-sensing experts.
此次峰会汇集了民用航空权利机构的代表,地面和现场观测的专家,建模和卫星遥感专家。
3
A good forecast result has been concluded with a topological prediction model of gray system theory based on the observation data of ground water table in Lanxi County.