Wavelet Transform and Its Application to Laser Pulse Detection

Due to the problem of detecting weak signal in strong noise, a method of pulse signal detection was put forward which is based on multiresolution wavelet analysis. According to Parserval theorem, the frame of signal space decomposition and energy distributing was established by this method, and a complete orthogonal multi-resolution description is defined, the design of floating threshold of multiresolution wavelet analysis was discussed, and the removing noise algorithm has been given. The result of experiment and emulation shows that multi-band wavelet analysis is able to extract the weak and unclear pulse signal from white noise. This method is applied to laser pulse exploration system, and which has better effect.