混响室条件下辐射敏感度表征方法研究

Research on the Characterization of Susceptibility Threshold in Reverberation Chamber

为确定混响室条件下辐射敏感度的表征方法,分别对混响室步进模式和连续模式下的电磁环境特征进行分析,得出可能的几种表征方法.再将某型电子设备分别在两种工作模式下进行电磁辐射敏感度测试,利用几种可能的表征方法分别得出其测试结果,并对各个表征方法进行分析.基于贝塞尔公式对各个可能的表征方法进行重复性及不确定检测.结果表明,为了获得良好的测试可重复性及不同模式的测试结果相关性,混响室步进模式时,可采用多个步进位置的平均值作为辐射敏感度的测试结果;混响室工作于连续模式时,应当选择适当的统计平均时间参数对测试结果进行表征.

In order to determine the characterization of susceptibility threshold in reverberation chamber the electromagnetic fields of two working modes were analyzed, and some possible characterization methods were proposed. A typically electrical device was fixed inside reverberation chamber （RC） to investigate the measurement results of the possible characterization methods, analyzing every characterization method. Furthermore, Bessel functions were used to test the repeatability and uncertainty of the proposed methods. The results show that the mean values in turned-mode and statistic mean time （SMT） in stirred-mode can obtain the good repeatable susceptibility threshold and correlation between different work modes.