Estimation of receivable distance for radiated disturbance containing information signal from information technology equipment
Estimation of receivable distance for radiated disturbance containing information signal from information technology equipment
复制标题
包含信息技术设备信息信号的辐射骚扰的可接收距离估计
DOI：
10.1109/isemc.2011.6038444
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. Seto
中科院分区：
文献类型：
--
作者：
H. Sekiguchi;S. Seto
本研究旨在评估利用信息技术设备的辐射电磁干扰可以重建的信息的泄漏威胁。本文从信息技术设备的可接收距离角度对信息泄露威胁进行了估计。信息技术设备的辐射电磁干扰则基于CISPR 22中规定的B类信息技术设备的辐射干扰限值。估计结果表明，考虑到本文假设的带有天线的接收机的可接收容量，与信息技术设备的可接收距离超过数百米。此外，接收频率越高，接收距离越短，在CISPR 22中定义的频率范围内，具有恒定的限值。然而，接收频率为230 [MHz]时，可接收距离增大，因为在230 [MHz]时，B类ITE的辐射干扰极限值增大。
The present study was conducted to evaluate a leakage threat of information that can be reconstructed using radiated electromagnetic disturbance of information technology equipment. In this paper, the information leakage threat was estimated from a viewpoint of the receivable distance from the information technology equipment. The radiated electromagnetic disturbance of the information technology equipment is then based on the limits of the radiated disturbance for the information technology equipment of class B provided in CISPR 22. The estimation result reveals that the receivable distance exceeds hundreds of meters from the information technology equipment, taking account of the receivable capacity of a receiver with an antenna assumed in this paper. In addition, when the receiving frequency is higher, the receivable distance is shorter, in the defined frequency range with the constant limit value defined in CISPR 22. However, the receivable distance is stepped up at the receiving frequency of 230 [MHz], because at which the limit values of the radiated disturbance for the ITE of class B is stepped up.