电压驻波比测量不确定度的评定和表述

Evaluation and Expression of Measurement Uncertainty ofVoltage Standing Wave Ratio

电压驻波比是无线电领域表征反射特性的传统参量,目前仍有应用场景,然而一些实验室对电压驻波比测量不确定度的报告是不完善的。比较了GUM法线性模型、GUM法非线性模型和蒙特卡洛法对电压驻波比测量不确定度的评定结果,给出了一种在常规测量条件下可代替蒙特卡洛法的快速估算方法,并将该方法推广到一元非线性测量模型。

The voltage standing wave ratio(VSWR)is a traditional parameter that characterizes the reflection characteristics in the radio field.There are still application scenarios.However,the reports on the measurement uncertainty of VSWR in some laboratories are not perfect.The evaluation results of VSWR's measurement uncertainty by GUM method of linear and nonlinear measurement model are compared with the results of Monte Carlo method(MCM).A quick GUM method is introduced which can replace MCM and be extended to any one variable measurement model under the common conditions.