对我国新旧重力系统转换的几点意见

本文提出了我国新旧重力系统实施转换的三种方法。其中平差法理论严谨,充分顾及了重力系统差异的物理意义,并可获得足够的信息,以估算旧网的实际精度;插值法为实地转换,系统转换误差小,计算简便,是较理想的实用模型;回归法是两套系统的平滑拟合,采用全国统一的转换模型,计算工作量最小。三种方法亦可结合使用。

Some Remarks on the Transformation between the Previous and Present Gravimetric System

Three methods are suggested for the transformation between thePrevious and Present gravimetric system:Adjustment method is basedon error theory taking fully the Physical signification of gravimetric system into account and can give useful information for estimation ofthe Previous net′s accuracy;Interperlation method is of“real”transfo-rmation,and gives little transforming error to gravity.it is then aPracticiable modle;Regression method gives the Smoothing resolu-tion and a homogeneous formnla for the wuhole country′s transformingcomputation.The three can of canse be Performed commonly.