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坐标系统的选择对一项工程来说是一项必须首先进行的工作,同时坐标系统选择的适当与否关系到整个工程质量的好坏,因此对坐标系统的研究是一项非常重要和必需的工作。对于城市而言,使投影长度变形控制在允许的精度范围之内是建立独立坐标系统主要解决的问题,因此,独立坐标系统的建立主要是根据所在测区的不同来建立与本测区相适应的坐标系统,从而使其投影长度变形控制在允许范围之内。本文讨论通过建立城市抵偿坐标系解决变形问题的方法。 更多还原

【Abstract】 Selection of the coordinate system is the basis for a project,which will be related to the quality of the project..Therefore the research on the coordinate system is quite necessary and important.The problem which is needed to be solved for building independent coordinate system is to control the extent of distortion within the permitted accuracy range by indentifying the different features of the target areas.The paper intends to solve the problems of distortion by establishing the compensation...