Material electromagnetic pulse shielding effectiveness testing system based on nested reverberation chamber and testing method thereof

Abstract

The invention discloses a material electromagnetic pulse shielding effectiveness testing system based on a nested reverberation chamber and a testing method thereof. The method includes the following steps that (1) testing preparation is performed; (2) when no tested electromagnetic protection materials exist on a window, a main stirrer and a small stirrer rotate according to rules so that data can be acquired; (3) all maximum numerical values in a tested data waveform are collected, a system mean value envelope line is established, and the peak value E0 is collected; (4) when the tested electromagnetic protection materials exist on the window, the step (2) and the step (3) are executed again, and the peak value ES and the field intensity numerical value for representing whether the tested electromagnetic protection materials exist or not through the ES and the E0 are obtained; (5) the electromagnetic pulse shielding effectiveness SEP of the tested electromagnetic protection materials is calculated. The material electromagnetic pulse shielding effectiveness testing system based on the nested reverberation chamber and the testing method thereof have the advantages of being good in repeatability of test results, capable of enabling the variable coefficient to be smaller than five percent, capable of solving the problems that result randomness is high and fluctuation is large in single-point single testing of a traditional shielding effectiveness testing method, suitable for persistent oscillation pulses, variable oscillation pulses and double-exponential pulses, and high in practicability.

Description

technical field [0001] The invention relates to a material electromagnetic pulse shielding effectiveness test system and a test method based on a nested reverberation chamber, which belongs to the field of electromagnetic shielding technology and is suitable for various types of constant-amplitude oscillating pulses, unequal-amplitude oscillating pulses, and double-exponential pulses It is especially suitable for measuring the shielding effectiveness of electromagnetic shielding materials under the condition of diffuse field electromagnetic environment. Background technique [0002] Electromagnetic protection materials are the most effective means of electromagnetic protection and anti-interference to improve electronic information systems, and are widely used in scientific research, electronic technology, aerospace, especially military technology and other fields. The modern social environment, especially the electromagnetic environment on the modern battlefield is complex ...

AI Technical Summary

Problems solved by technology

The electromagnetic pulse shielding effectiveness of materials is a sign to measure the electromagnetic protection effect of electronic information equipment or systems, which directly affects the working performance and technical indicators of equipment or systems in the environment of electromagnetic pulse radiation. If it is not handled properly, it may even cause system paralysis or permanent sexual destruction

[0003] At present, in my country, there are only test standards and corresponding test methods for the electromagnetic shielding effectiveness of materials under continuous wave conditions, but there are no measurement standards and methods for the electromagnetic pulse shielding effectiveness of materials. The electromagnetic pulse protection performance evaluation of the system brings difficulties; in addition, the electromagnetic pulse environment is mostly in the chamber environment and other diffuse field electromagnetic environments with multiple reflection and refraction environments, and the electromagnetic protection performance evaluation of materials in this environment has not yet been conducted. Standardized Test Method

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