A new adaptive Kalman filter based on ARMA innovation model is designed to detect weak high-frequency CW signal in strong Non-stationary noise environments.

Study on reliability of chaotic oscillator in weak signal detection;

Application and detection of weak signal based on stochastic resonance;

Study on weak signal detection method based on wavelet entropy;

Summary of Correlate Detection Technology of Weak Signals;

A new approach to extract weak periodic signal from strong noise is proposed to pick up some weak signals in the fault diagnosis of mechanical equipment.

According to the operating principle of the lock-in amplifier the experimental method of measuring the weak signals using the lock-in amplifier is presented.