以高斯平面坐标和大地高为参数的GPS网平差

推出大地坐标对高斯平面坐标的偏导数的近似计算公式，在此基础上导出了以GPS基线向量为相关观测量，以x,y和H为平差参数的（2＋1）维平差模型，对设计矩阵中的元素（各个偏导数）进行了数值检验，并且实例证明了模型的正确性。同时表明，采用数值方法可计算复杂函数的偏导数，以满足线性化平差模型的需要。

GPS Network Adjustment with Parameters of Guass-plane Coordinate and Ellipsoid Height

In this paper,approximate formulas of partial derivation of geodesic coordinate to Guass plane coordinate are derived,a (2 1) dimension adjustment model with observation on GPS base line and adjustment parameters x,y and H are discussed,and each factor namely partial derivative was tested numerically.An example demonstrates that the adjusment model is right.Also this paper demonstrates that numerical method could calculate partial derivative of complex function to linearize adjustment model.