摘要
在高程异常的控制网中，如我国的天文（重力）水准网，ＧＰＳ水准网等，研究了基于控制点上的已知高程异常值，利用重力资料，采用＂移去－恢复＂（ｒｅｍｏｖｅ－ｒｅｓｔｏｒｅ）技术，推估该控制网中内插点的高程异常的方法。本文讨论了这一推估高程异常的精度和高程异常控制网及重力数据的分辨率、精度的关系，并结合我国实际情况给出了试算结果。
In a height anomaly control network，such as astronomic（or astro－gravimetric）levellingnetwork or GPS－levelling network，height anomalies at interpolation points are predictedusually using remove－restore technique on the basis of known height anomalies at the controlpoints and the gravity data.This paper discusses the relationship among accuracy of the pre-dicted height anomalies and the resolution as well as accuracy of height anomaly control net-work and those of gravity data.Main results of a case study and its test computation in con- nection with practical circumstance of China are also given.
出处
《测绘学报》
EI
CSCD
北大核心
1995年第3期161-167,共7页
Acta Geodaetica et Cartographica Sinica
