Weak Signal Detection Technology Based on Adaptive Filtering

Adaptive filtering technology has been widely used in fields such as electronic communication and sonar detection, especially in the detection of weak signals, such as high-precision acquisition of microvolt level voltage signals. Using adaptive filtering technology to accurately detect weak signals in strong noise backgrounds and issue timely alerts. Using a digital signal processor to implement adaptive filtering for weak signal detection, improving the separation between signal and noise. By designing an adjustable bandpass filter based on LRC resonant circuit and combining it with adaptive filtering algorithm, high-precision acquisition of wideband weak signals is achieved, improving the reconnaissance effect on target signals.