甘肃省地图正轴等角割圆锥投影  

Gansu province map of normal secant conic conformal projection

作　　者：赵淑湘[1] 

机构地区：[1]甘肃林业职业技术学院,甘肃天水741020

出　　处：《矿山测量》2016年第3期35-38,共4页Mine Surveying

摘　　要：文中主要针对目前甘肃省地图正轴等角割圆锥投影所采用的两条标准纬线(34°00'、41°00'),进行了投影常数、变形系数以及1:250 000坐标表等的计算。结果表示:投影常数T=0.609 147 186;K=12 738 389.33;面积变形在南北边缘为+5‰;在制图区域中部为-1‰^-4‰;面积变形较小,可以满足编制甘肃省地图的数学基础。Aims at the two standard latitude map of Gansu province at present normal secant conic conformal projection used（34°00＇,41°00＇） ,the deformation coefficient and the 1：25 coordinate tables were calculated. The results showed that： the projection constant T = 12738389.33, K =0. 609147186, the area in the north and south edge of ＋ 5‰ deformation, in the mapping region of the central - 1‰ -4%o, area deformationwas small, which could meet the preparation of the digital basis of the map of Gansu province.

关 键 词：地图 正轴等角割圆锥投影 面积变形 

分 类 号：P282.1[天文地球—地图制图学与地理信息工程]