轴线投影变形最小任意带高斯正形投影参数确定

Determination of projection parameters of Gaussian orthomorphic in the smallest arbitrary zone of axis projection distortion

针对轨道铺设、隧洞及高标准的管道安装等以带状分布为特征的工程,其理想状况应该是其工程建设贯通后的投影变形为零。然而,多数情况下对于任意带高斯正形投影,将投影参考位置选择在测区中央并不能使投影变形在该准则下达到最优化。因此,本文提出了一种基于选定轴线投影变形最小准则确定任意带投影参考位置的方法、并确定了中央子午线至测区投影参考位置的距离Y’m。

For the project of track laying,tunnel and high-standard pipeline installation,the ideal condition is that the projective distortion is 0 after project construction.For the projection of Gaussian orthomorphic projection in arbitray zone,selecting the projection reference position in the middle of the survey area cannot optimize the projective distortion under the criterion.The method of determining the reference position of the arbitrary zone projection based on the minimum projection distortion criterion of the selected axis,and determining,the distance between the central meridian and the projection reference position are studied.