高功率微波辐射场功率密度测量不确定度分析方法

发布时间：2018-09-13 10:09

【摘要】：辐射场测量是检验高功率微波系统输出指标的重要手段.随着高功率微波测量技术的发展,辐射场测量系统的稳定性和可靠性不断提高,作为完整测量结果重要组成部分的测量不确定度越来越受到关注.文章介绍了高功率微波辐射场功率密度测量方法及系统组成,建立了功率密度测量的数学模型,给出了高功率微波辐射场功率密度测量的主要不确定度来源.对检波器输入功率计算、接收天线有效面积校准、衰减环节校准及测量系统各环节连接失配等测量不确定度分量进行了分析,并给出了高功率微波辐射场功率密度测量不确定度的合成方法.本文给出的测量不确定度分析方法较为科学、操作性强,对完善高功率微波辐射场功率密度测量结果具有一定的指导意义.
[Abstract]:Radiation field measurement is an important means to test the output index of high power microwave system. With the development of high power microwave measurement technology, the stability and reliability of the radiation field measurement system are improved continuously. As an important part of the complete measurement results, the uncertainty of measurement is paid more and more attention. This paper introduces the power density measurement method and system composition of high power microwave radiation field, establishes the mathematical model of power density measurement, and gives the main sources of uncertainty in the measurement of power density of high power microwave radiation field. The measurement uncertainty components, such as the calculation of geophone input power, the calibration of effective area of receiving antenna, the calibration of attenuation link and the mismatch of each link of measurement system, are analyzed. A synthesis method of uncertainty in measurement of power density of high power microwave radiation field is presented. The measurement uncertainty analysis method presented in this paper is more scientific and has strong maneuverability. It has certain guiding significance for improving the measurement results of power density of high power microwave radiation field.
【作者单位】：西北核技术研究所;
【基金】：国家863计划项目(2015AA8035039A)
【分类号】：TM931

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