In this paper,a measurement method for detecting weak optical signal in polymer fibers is proposed,which utilizes the pseudo-random sequence(PN)generated with FPGA.

Investigation of a phase-locked amplifier for slight photo-electric signal detection based on Labview;

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;