Error Analysis of the Maximum Coupling for HEMP Illumination Tests With EUT Rotations

IF 0.9 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Letters on Electromagnetic Compatibility Practice and Applications Pub Date : 2023-04-17 DOI:10.1109/LEMCPA.2023.3267741

Yuewu Shi;Xin Nie;Yifu Zhou;Zhizhen Zhu;Wei Chen;Wei Wu

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Abstract

The maximum electromagnetic (EM) coupling is directly related to the polarization angle of the incident field in the high-altitude EM pulse (HEMP) illumination test. Aimed at the linear system, this letter analyzed the test error of the maximum coupling corresponding to the change of the angle between the polarization direction and the direction of the equipment under test (EUT) in EMP illumination tests. Characterized by the EM norm, the quantization estimation formula of the maximum coupling test error under illuminations with EUT rotations is deduced. The results show that the maximum measurement accuracy is the cosine of 1/2 of the maximum rotation angle of the EUTs. Finally, a test scheme of five illuminations (with rotations of the EUT and the rotation angle of each rotation is 36°) with 95% test accuracy of the maximum coupling of the method itself is recommended in this letter. The results can provide support for the design and evaluation of the EM illumination test.

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带EUT旋转的HEMP照明测试的最大耦合误差分析

在高空电磁脉冲（HEMP）照明测试中，最大电磁耦合与入射场的偏振角直接相关。本文针对线性系统，分析了EMP照明试验中被测设备（EUT）偏振方向与偏振方向夹角变化时的最大耦合测试误差。以EM范数为特征，推导了EUT旋转照明下最大耦合测试误差的量化估计公式。结果表明，最大测量精度是EUT最大旋转角度的1/2的余弦。最后，本函建议采用五种照明的测试方案（EUT旋转，每次旋转的旋转角度为36°），方法本身最大耦合的测试精度为95%。研究结果可为EM照明测试的设计和评估提供支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Letters on Electromagnetic Compatibility Practice and Applications

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