One way to evaluate high power microwave's effect on computers in the building
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摘要: 提出了一种评估高功率微波对建筑物内计算机作用效果的方法。建立建筑物的电磁计算模型，利用时域有限差分法对高功率微波进入建筑物的过程进行数值模拟，求出计算机所在高度面上的时域最大场强，定义大于效应阈值区域的面积与建筑物总面积的比例为有效面积比，高功率微波对建筑物内计算机的作用比例即等于有效面积比。并开展实验对此方法的有效性进行验证，估计的计算机效应比例和实验结果相差20%以内。改变入射场强，得到计算机效应比例与入射场强的关系，与理论分析结果一致。Abstract: One way to evaluate high power microwave's effect to computers in the building is proposed. Finite-difference Time-domain method is used to compute the electromagnetic field in the building and we can get the greatest field of every point in the building. The volume ratio which is greater than the effect threshold equals the computer's effect probability. An experiment was carried out to test the method. The computer's effect ratio difference between the experiment and the computation is less than 20%. By changing the incident field intensity, the relation between the computer effect ratio and the incident was analyzed. The experimental results agree well with theoretical calculation results.
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