視頻顯示器圖像的電磁泄漏重建
Reconstruction the image on video display unit by electromagnetic leakage
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摘要: 計(jì)算機(jī)數(shù)據(jù)的電磁輻射泄漏近來一直受到人們的關(guān)注。該文提出了一套利用其輻射信號(hào)獲取顯示信息并重建之的系統(tǒng)。該系統(tǒng)通過天線接收電磁輻射，經(jīng)放大，A/D轉(zhuǎn)換后，輸入計(jì)算機(jī)，然后對(duì)該數(shù)據(jù)進(jìn)行處理，重建圖像。試驗(yàn)表明，該系統(tǒng)完全可行，并達(dá)到滿意的效果。
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關(guān)鍵詞:
- 視頻顯示器; 電磁泄漏; 重建; 輻射; 小波變換
Abstract: Electromagnetic leakage of video display unit becomes the focus of wide interest recently. An image-reconstruction system is presented here using electromagnetic leakage from video display unit. In this system a loop antenna is employed to receive the radiation. After being magnified, A/D transferred, the received data are processed by computer to reconstruct the image. The experiment shows the feasibility and good performance of this system. -
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