GPS工程控制网投影变形的处理

The Processing of Distortion of Projection of GPS Engineering Control Network

在GPS工程控制网建立的内业处理中,为后续工程的方便必须设法消去高斯投影变形对坐标成果的影响。本文在简要介绍了常规投影变形处理方法之后,提出了尺度强制约束和投影面重新选择两种投影变形的处理方法。工程实践检验表明:两种方法不但可行而且可使处理后的坐标系统与国家坐标系统尽可能保持一致,方便了工程使用。

In the inner processing of building GPS engineering control network, the influence to the coordinate of distortion of Guass projection must be deleted. In this paper, after the common processing method of distortion of projection is simply introduced, the processing methods of forced restraining of scale and re - choosing the projection plane is developed, the practical engineering shows that the both methods not only is feasible, but also can make the coordinate system after processing consistent with the national coordinate system, and is convenient to use in engeering.