摘要
本文论述计算平均海面的原理和方法,以便确定出我国区域性大地水准面(高程基准面)。利用给定验潮站的海面19年的每小时记录,按照每天24小时观测直接平均和X_0、Z_0、N_0、G_0滤波器,分析结果表明,计算精度可达1mm,基本满足区域大地水准测量的要求。
The purpose of this paper is t o deal with the principle and method of computing mean sea level so as to determine the reference plane(elevation datum)for the local geodetic leveling in China With the sea level records for 19 years running at a given tide gage station,treated as time series , the mean sea level have been computed by the straight average of the 24-hour observations every day and by Xo ,Zo ,No,G.filters. The analysis of the results shows that the accuracy of computa-tion may attain 1mm, which basicalyt meets the reguirement for the local geodetic leveling.
