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Abstract: Weak signal detection technology refers to a technology, which analyzes the noise''s production laws and researches the characteristics and correlation of signals with relevant electronics, physics, information, and computer knowledge and techniques, to detect the weak signals that are submerged by noises. In this paper, the basic principle of weak signal detection is discussed from the i
摘自：本科毕业论文结论www.udooo.com
mprovement of SNR (Signal to Noise Ratio) of signal processing system, and also the principles and methods of relevant detection, sample integral, time-domain eraging, frequency-domain detection, and time-frequency analysis are emphatically analyzed, expecting that different methods can be applied by people in detection according to the signals of different characteristics.