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A low-cost and efficient method of determining the best frequency band for video leaking signal reconstruction

机译:一种确定视频泄漏信号重建的最佳频段的低成本高效方法

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Determining the best frequency band for reconstructing display video leaking signal is the key problem in TEMPEST, which is the technology of electromagnetic leaking research. To solve such problem, a novel algorithm based on spectral centroid has been developed. Using the property that spectral centroid can accurately identify the signal energy center in frequency domain, the proposed algorithm can find best frequency band automatically. The uniformity degree of spectral centroid spacing distribution is defined to find the best frequency band which has the highest signal to noise ratio (SNR). Thus the video leaking signal reconstruction can be realized efficiently without expensive equipment.
机译:确定用于重构显示视频泄漏信号的最佳频带是TEMPEST的关键问题,这是电磁泄漏研究的技术。为了解决这个问题,已经开发了一种基于谱质心的新算法。利用频谱质心可以在频域中准确识别信号能量中心的特性,该算法可以自动找到最佳频段。定义频谱质心间隔分布的均匀度以找到具有最高信噪比(SNR)的最佳频段。因此,无需昂贵的设备就可以有效地实现视频泄漏信号的重建。

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