GPS高程异常的确定方法

The Application of GPS Elevation Abnormality

全球定位系统(GPS)的发展使得大地测量发生了一场技术性的革命,其可以全天候、高精度、连续、实时地提供三维坐标、三维速度和时间信息。但是,目前GPS的一大缺点是高程方向的精度不如平面方向那么高,正是这个缺点,也限制了GPS在更广范围、更深领域的发展。本文就GPS高程测量中存在的高程异常问题进行了探讨。

The global positioning system （GPS） development enabled the geodetic survey to have a technical revolution. It has the merits of all-weather, the high accuracy, continual, real-time providing the three dimensional coordinate, the three dimensional speed and the time information. But at present, Its big shortcoming is the elevation direction precision was inferior that the plane direction. As this shortcoming also limits GPS in a broader applying scope and the deeper domain development. The paper discusses the questions which exist in Gps elevation survey.