整体平差后国家控制网的精度及其评定方法的研究  

RESEARCHES ON THE AGGURACY OF NATIONALGEODETIG NETWORK ADJUSTED IN ONE CASTAND THE METHOD OF ITS EVALUATION

作　　者：时京[1] 

机构地区：[1]国家测绘局测绘科学研究所

出　　处：《测绘学报》1989年第2期121-130,共10页Acta Geodaetica et Cartographica Sinica

摘　　要：本文以基准变换、起始数据误差影响以及连续三角网精度的有关理论为基础，提出了整体平差后天文大地网局部区域坐标协方差阵的计算方法。用这一方法对我国海南岛地区整体平差后的精度及对低等网精度的影响进行了实际计算，并对国家控制网整体平差后的精度及能满足何种比例尺测图要求等问题进行了讨论。:Based on the relevent theories of datum transformation, the effect of the error ininitial data and the accuracy of continuous triangulation net, a method for computing theco-variance matrix of coordicates in a local part of the astro-geodetic network adjustedin one cast is suggested. This method has been applied to the experimental computationfor evaluating the accuracy of the partial adjusted astro-geodetic network located inHainan prpvince and it's effect on the accuracy of lower order networks. Also discuss-ed are the accuracy of national geodetic network adjusted in one cast, what mappingscales does it satisfy and some other related problems.

关 键 词：整体平差 天文大地网 精度 控制网 

分 类 号：P128.1[天文地球—天体测量]