本报告建议测定与光度测定中选定量值相关的测量不确定度。该报告解释了从测量输入量的初始程序到输出值的最终陈述以及相关扩展不确定性的步骤。主要部分总结了按照国际商定的《测量不确定度表示指南》（GUM）及其补充件1中的规则评估标准、组合和扩展不确定度的基本定义。结合本报告的补充部分，通过大量示例，提供了如何在测量方程中建模测量程序、在预算中组合不确定性以及转换为扩展不确定性表示的指南。 该出版物以英文写成，并附有法文和德文的简短摘要。它由30页组成，包括3个图表和2个表格。本报告由出版物CIE 198-SP1《光度测量中测量不确定度的测定——测量不确定度测定的模块和示例》补充，该出版物分为4个部分。（此外，附录第2部分中解释的详细示例的Excel工作簿和Mathematica程序的链接可与附录一起使用。） 接下来还要补充。

This report is a recommendation for the determination of measurement uncertainties associated with the values of selected quantities in photometry. The report explains the steps from the initial procedures for a measurement of input quantities to a final statement of the output values with associated expanded uncertainties. The main part summarises the fundamental definitions for the evaluation of standard, combined and expanded uncertainties following the rules in the internationally agreed "Guide to the Expression of Uncertainty in Measurements" (GUM) and its supplement 1. In conjunction with this report supplements, with a wide selection of examples, provide guidance on how to model measurement procedures in a measurement equation, combine uncertainties in a budget and convert to the presentation of expanded uncertainty.The publication is written in English, with a short summary in French and German. It consists of 30 pages with 3 figures and 2 tables.The report is supplemented by the publication CIE 198-SP1 Determination of Measurement Uncertainties in Photometry - Modules and Examples for the Determination of Measurement Uncertainties, which is divided into 4 parts. (Furthermore links to an Excel workbook and a Mathematica program for the detailed examples explained in Part 2 of the Supplement are made available in connection with the Supplement.) Further Supplements are to follow.