本文介绍了确定泊松分布测量中响应变量临界值和最小可检测值的方法。当背景噪声和信号的变化都可以用泊松分布来描述时，它是适用的。常规近似用于通过符合ISO 11843？3和ISO 11843？4的正态分布来近似泊松分布。 与精确泊松分布相比，正态近似的精度在附录C中进行了讨论。

This document presents methods for determining the critical value of the response variable and the minimum detectable value in Poisson distribution measurements. It is applicable when variations in both the background noise and the signal are describable by the Poisson distribution. The conventional approximation is used to approximate the Poisson distribution by the normal distribution consistent with ISO 11843 3 and ISO 11843 4. The accuracy of the normal approximation as compared to the exact Poisson distribution is discussed in Annex C.