顾及投影面高程变化时GPS网与矿区控制网的坐标转换模型

The Coordinate Transformation Model of GPS and Mining Area Control Networks When Take thing Height Varying of Projection Surface into Account

由于我国许多矿区平面控制网采用投影面为任意高程面（测区平均高程面或抵偿面）的独立坐标系，当GPS网和地面网在高斯平面坐标系中进行联合平差时，应顾及投影面高程变化时对高斯平面坐标的影响．本文修正了原有计算坐标影响值公式，建立了顾及投影面高程变化时两网之间的坐标转换模型．

This paper discusses the influence of height varying in the projection surface of terrestrial network when applying results of hugh accuracy positioning by satellite observations to Gauss coordinate system. It has presented a proper coordinate trasformation model of GPS, terrestrial networks and corrected the consult literature [1]'s mistake on the influence formula of height varying in the projection surface.