测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2012年
2期
187-190
,共4页
投影变形%椭球膨胀法%矿区独立坐标系%衔接%改造
投影變形%橢毬膨脹法%礦區獨立坐標繫%銜接%改造
투영변형%타구팽창법%광구독립좌표계%함접%개조
projection distortion%ellipsoid expanding model%mining area independent coordinate system%coherence%transformation
在投影变形超过限度的矿区进行地质测量时,一般要建立矿区独立坐标系,目前常用的方法为椭球膨胀法。由于独立坐标系与国家坐标系坐标数值上存在差异,造成新的测量图件与早期地质图件不好衔接、用图不便等一系列实际问题。为了解决这些问题,本文提出了一种矿区独立坐标系的改造方法,并通过实例对比分析,认为这种改造方法是可以实施的。
在投影變形超過限度的礦區進行地質測量時,一般要建立礦區獨立坐標繫,目前常用的方法為橢毬膨脹法。由于獨立坐標繫與國傢坐標繫坐標數值上存在差異,造成新的測量圖件與早期地質圖件不好銜接、用圖不便等一繫列實際問題。為瞭解決這些問題,本文提齣瞭一種礦區獨立坐標繫的改造方法,併通過實例對比分析,認為這種改造方法是可以實施的。
재투영변형초과한도적광구진행지질측량시,일반요건립광구독립좌표계,목전상용적방법위타구팽창법。유우독립좌표계여국가좌표계좌표수치상존재차이,조성신적측량도건여조기지질도건불호함접、용도불편등일계렬실제문제。위료해결저사문제,본문제출료일충광구독립좌표계적개조방법,병통과실례대비분석,인위저충개조방법시가이실시적。
When the geological survey is conducted in the mining area beyond the projection distortion limit, the mining area independent coordinate system is usually established and at present ellipsoid expanding model is the common method. The difference between the independent coordinate system and national coordinate system results in a series of practical problems,such as the incoherence between the new surveying maps and the early ones, and thus the inconvenience in using the maps. In order to solve these problems,this paper proposes a mining area independent coordinate transformation method which is considered feasible through the comparative analysis of examples.