摘要
观测值精度指标的表达通常有中误差、或然误差和平均误差,对于比较不同精度的观测数据,由于定义和计算原理的不同,它们在反映测量时存在一定差异,且与样本数据的数量(即样本容量n)存在较大的关联。以不同精度的仪器出来的实验数据为研究对象,采用MATLAB设计了相关计算程序,在粗差检测与剔除的基础上,详细探讨了不同精度指标与样本容量的关联性。实验证明,n=8~12时,精度指标中误差、或然误差、平均误差具有一致性。
The expressions of observation accuracy indicators usually have medium error, likelihood error and average error. For comparing different precision observation data, due to the difference of definition and calculation principle, they have certain differences in the reflection measurement, and the number of sample data (That is, there is a large correlation between the sample size n). The experimental data from different precision instruments are taken as the research object. The relevant calculation program is designed by MATLAB. On the basis of gross error detection and rejection, the correlation between different precision indexes and sample capacity is discussed in detail.
作者
任伯龙
REN Bolong(College of Geomatics,Shandong University of Science and Technology, Qingdao Shandong 266590, China)
出处
《北京测绘》
2020年第1期108-112,共5页
Beijing Surveying and Mapping
关键词
样本容量
中误差
或然误差
平均误差
sample size
medium error
likelihood error
average error
