Estimation of the EMP response of a system from its continuous wave measurement results

Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings. Pub Date : 1900-01-01 DOI:10.1109/CEEM.2003.238064

Shi Lihua, Li Zhengdong, L. Yanxin, Chen Bin, GaoCheng, Z. Bi-hua

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引用次数: 2

Abstract

Traditionally, the electromagnetic protection ability of a system, such as filters, shielding enclosures, etc., is measured in the frequency-domain and expressed as insertion loss or shielding effectiveness. When the time-domain characteristics of the system are required to evaluate their pulse response, time-domain tests need to be conducted. However, it may not be convenient to carried out time-domain tests because of the availability of test facilities. Theoretically, suppose the system works in a linear range, its pulse response can be estimated from frequency-domain measured data. We evaluated this concept by experiments. A digital filter model of the system under test is used to approximate the measured frequency response and then employed to calculate the output of the system under pulsed input. The estimated pulse responses are compared with measured ones. Results show that it is possible to estimate approximately the magnitude and shape of the time-domain response by this approach.

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根据系统的连续波测量结果估计系统的电磁脉冲响应

传统上，系统的电磁保护能力，如滤波器、屏蔽外壳等，是在频域测量的，并表示为插入损耗或屏蔽效能。当需要系统的时域特性来评估其脉冲响应时，就需要进行时域测试。然而，由于测试设施的可用性，进行时域测试可能不方便。理论上，假设系统工作在线性范围内，可以从频域测量数据估计其脉冲响应。我们通过实验来评估这个概念。用待测系统的数字滤波器模型来近似测量频率响应，然后计算脉冲输入下系统的输出。将估计的脉冲响应与实测的脉冲响应进行了比较。结果表明，用这种方法可以近似地估计时域响应的大小和形状。

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Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.

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