GPS网正常高的计算及其精度评价

THE CALCULATION OF THE NORMAL HEIGHT OF GPS NETWORK AND ITS PRECISION ASSESSMENT

本文根据GPS网中公共点的高程异常，建立测区的似大地水准面的数学模型，从不同角度对模型的代表性误差进行了评价，并提出了对由模型求得的GPS点的高程异常的可靠性进行检验的参考方法。

Based on the elevation anomaly of the cornmon points in the GPS network,this paper establishes the mathematical model of the quasigeoid in the survey area. Frorn various angles,the representative error of the model is assessed. A referencial methed is presented for the reliability examination of the elevation anomaly of the GPS points found frorn the model.