摘要
为保证混响室中样本的统计独立性,混响室内搅拌器的相关角度给出了测试过程中搅拌器步进角度的下界。依照IEC 61000-4-21:2011确定搅拌器相关角度时,由于每次转动角度较小,完整旋转一周所需时间较长。为缩短测试时间,提高测试效率,提出一种快速评估相关角度的方法,即使搅拌器不完成整周旋转,相关角度也可以准确估计,从而大幅度减少测试时间。测试结果对不同旋转角度进行了比较,与完整旋转一周的结果吻合良好,证实了文章方法的有效性。
To ensure the statistical independency of the measured samples in a reverberation chamber,the rotation angle of the stirrers should be larger than the correlated angle.When measuring the correlated angle,according to IEC 61000-4-21:2011,the rotation angle of each step should be small and the measurement time for a whole round could be quite long.To shorten the measurement time and improve the measurement efficiency,we propose a fast method to estimate the correlated angle and show that a whole round rotation is not necessary,the measurement time can be reduced greatly.By comparing the measurement results with that from a whole round,the proposed method is validated by measurements with different rotation angles.
作者
徐千
史云雷
陈辉
Xu Qian;Shi Yunlei;Chen Hui
基金
国防基础科研计划(JCKYS2021DC05),南京航空航天大学前瞻布局科研专项资金资助项目。
关键词
电磁混响室
相关角度
独立样本数
electromagnetic reverberation chamber
correlated angle
independent sample number
