height anomaly

the relative accuracy and absolute accuracy in the refining of quasi-geoid using the height anomaly difference adjustment were calculated and discussed for plains and mountainous areas respectively.

分别在平原和山区地形条件下，计算分析了高程异常差平差法进行似大地水准面精化的相对精度和绝对精度。

a method was proposed for the refining of the local quasi-geoid using vertical deflections, gravity anomalies, gps/ leveling comprehensively, which was called relative height anomaly difference adjustment. 4.

提出了一种综合利用垂线偏差、重力异常、GPS/水准等数据的精化局部区域似大地水准面的方法&相对高程异常差平差法。

Under the condition of reliable GPS/ level data, boundary restriction to gravitational height anomaly model is made, which aims at weakening the system errors existing in the transform between gravity system and height system, achieving the system transform, improving precision of ultimate model.

在确保GPS/水准点成果可靠的前提下，用其对重力法计算所得的高程异常模型进行框架约束，以削弱重力系统与高程和坐标系统间的系统差，实现系统转换，提高最终模型的精度。

The average mean square error of height anomaly is ± 0.173 m in three areas.

3个地区高程异常中误差平均值为±0.173m。

This paper focused on the estimation of height anomaly by FFT, and the Romberg algorithm for evaluating the truncation error coefficient.

本文讨论了FFT估计高程异常及Romberg算法解求截断系数的有关问题；