【摘要】 根据控制网改造的特点，推导出在控制网中加测GPS基线向量的优化设计模型；利用加测的基线向量数据与原平差成果进行联合平差，从而修正观测点的精度，利用滤波推估理论推估出未观测点的坐标修正值，从而达到控制网改造的目的。更多还原

【Abstract】 According to the character of reforming existing control network the optimal designing model which adds GPS sides to the existing control network was concluded, the union adjustment was undertook by observed data and old adjusted data to adjust the coordinates of those observed points, then the coordinates of those unobserved points wear adjusted by adjustment of allocation, so that we get to goal of reforming the existing control network..更多还原