Application of weak signal extraction technology in computer video leaking measurement system
Yiwen Tang, Chang Huang · 2012
The technology of detection and reconstruction for valid information is a research emphasis in TMPEST, the technology of electromagnetic leaking research. After the research and analysis of computer video leaking in CRT system, the problem of weak signal extraction in receiving part of computer video leaking measurement system is pointed out. The extraction method for horizontal synchronization signals based on the correlation technique and de-noising method for video leaking signals based on the one-dimensional wavelet transform are proposed, which are of great importance in detecting and reconstruction of video leaking signal.