摘要
以计算机显示设备泄漏电磁信号为研究对象,针对计算机视频泄漏电磁信号弱、还原图像不清晰的问题,利用奇异谱分析方法对泄漏电磁信号进行处理。鉴于可用于视频图像还原的电磁信号数据量大,奇异谱分析速度慢,采用了数据分组计算后重组的方法,提升了数据处理的速度。通过实验,使用该方法处理后信号的信噪比和还原图像质量都有显著提高,验证了奇异谱分析方法应用于电磁泄漏信号去噪的有效性。
Taking the leakage of electromagnetic signals from computer display equipment as the research object,aiming at the problem of weak electromagnetic signal leakage from computer video and unclear restored images,the singular spectrum analysis method is used to process the leakage electromagnetic signals.In view of the large amount of electromagnetic signal data for video image restoration and the slow speed of singular spectrum analysis,a method of recombination after data grouping calculation is adopted to improve the speed of data processing.The signal-to-noise ratio and restored image quality of the signal processed by this method are significantly improved through experiments,which verifies the effectiveness of the singular spectrum analysis method in electromagnetic leakage signal denoising.
作者
康妮
张游杰
马通边
石森
KANG Ni;ZHANG You-jie;MA Tong-bian;SHI Sen(Taiyuan University of Science and Technology,Taiyuan 030024,China;Electronics Technology Group Thirty-three Research Institute,Taiyuan 030032,China)
出处
《太原科技大学学报》
2022年第5期379-384,共6页
Journal of Taiyuan University of Science and Technology
基金
山西省科技厅重点研发计划(201903D111002)。
关键词
电磁泄漏
奇异谱分析
信号降噪
视频信号还原
electromagnetic leakage
singular spectrum analysis
signal noise reduction
video signal restoration
