过原点拟合直线斜率的合成不确定度

The Combined Uncertainty on the Slope of Zero-Crossing Linear Fitting

在分析已有文献的基础上,应用不确定度传播律,通过分析过原点最小二乘法拟合直线的相关系数,给出过原点拟合直线斜率合成不确定度的计算公式.

Based on an analysis of the existing references and with the application of the law of propagation of uncertainty, the paper gives an analysis of the correlation coefficient of the least square method of zero - crossing linear fitting, and provides the calculation formula for the synthesis uncertainty of the slope of zero - crossing linear fitting.