GIS叠置位置不确定度的统计估计方法

基金项目: 测绘遥感信息工程国家重点实验室开放研究基金资助项目(992120)。

详细信息

The Statistical Estimation Method of GIS Overlay Uncertainty

School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan, China, 430079

摘要: 针对手工数字化地形图的GIS数据,利用多层叠置上的同名点坐标来估计位置数据的不确定性,提出了一套计算方法。主要内容包括运用成对子样序列的t检验法,对两层叠置的手工数字化数据进行了粗差检验,提出了单位权方差的综合估计方法。其特点是应用统计检验和统计估计原理,使得到的结果更合理和简捷。
- GIS叠置 /
- 不确定性 /
- 统计估计
Abstract: According to GIS data of manual digitizing map,this paper uses coordinates of the same name point on multi-lift overlay to estimate uncertainty of the position data and gives a calculating method.Its main contents include using testing method of dual sub-sample array to do gross error testing to manual digitizing data of two-lift overlay,and giving the synthetic estimation method of unit weight variances.The characteristic is the application of the principle of statistical test and statistical estimation brings a more reasonable and simple result.
- GIS overlay uncertainty statistical estimation