【摘要】 为把某市的几个区的坐标统一到一个坐标系中,采用3°带高斯投影法、抵偿面的3°带高斯投影法或任意带高斯投影法时,长度变形均超过2.5cm/km。只能采用能较好地控制长度变形的具有抵偿面的任意带高斯投影法,此时整个测区的长度变形小于2.5cm/km。本文针对此情形对上述四种高斯投影变形进行对比分析。更多还原

【Abstract】 In order to convert the coordinates of several areas of one city into an uniformed coordinate system,it found that when Gauss conformal projection of 3° zone,Gauss conformal projection of 3° zone with compensation plane or gauss conformal projection of arbitrary zone were adopted,all length deformation exceed 2.5cm/km.Therefore,the only choice is to use the one of arbitrary zone with compensation plane,which can better control the length deformation.As a result,the length deformation of whole field is smaller than 2.5cm/km.For this case,this paper contrasts and analyzes the four deformations of Gauss conformal projection.更多还原