高精度绝对重力观测已广泛应用于大地测量、地球物理与地球动力学的研究中,而许多外界因素对它有不可忽略的影响,其中空气阻力和科里奥利力的影响在地学界很少讨论。对这两方面的影响作了阐述,同时从理论上对FG5绝对重力仪的真空度要求(1.3332×10^-3~1.3332×10^-4Pa)加以证明,对如何减弱这些影响提出了建议。
The high precision absolute gravimetry has been used in the study of geodesy, geophysics and gendynamics widely. There are many external factors effecting on absolute gravimetry, among which, the air resistance and Coriolis force have scarcely been discussed. The two effects are expound, especially the vacuity desire for FG5 absolute gravimeter that is 1. 3332 × 10^-3 - 1. 3332 × 10^-4 Pa has been quoted theoreticly. The proposals how to reduce the influence in gravity observation are presented, as well.