近仪物体对高精度重力测量的影响

近年来为满足地球动力学、大地测量学、地球物理学、计量学等方面的需要,绝对和相对的重力测量日益得到重视和发展。其观测精度已达到微伽(1μGal－10^-8m/s²)级,若要保证这样的精度,就必须顾及近仪物体的扰动或影响。本文将从一些实际资料说明这一情况,并从一些模型计算出发,不仅推导了有关公式,还重点讨论了它们的重力效应,以便得到消除或改正。

THE INFLUENCE OF NEAR-INSTRUMENT BODIES UPONHIGH-PRECISION GRAVITY SURVEY

Abstract For the purpose of meeting the demand of goodynamics, geodesy, geophysics and metrology, goophysicists have increasingly attached more importance to absolute and relative gravity survey in recent years, which, as a result, is developing with each passing day. Its observation precision has attained the order of u Gal (1uGal= 10~(-8)'m/s2). To ensure reaching such a precision, one must take into account the disturbance or influence of near-instrument bodies. With some practical data, this paper has illustrated this phenomenon and, based on some model calculations, not only deduced related equations but also dealt emphatically with their gravity effects so SB to eliminate or correct these effects.