Simulation Study Of Laser Echo Waveform's Processing Algorithm Of Digital Laser Fuse

Laser fuse is a near-target fuse with the rapid development of laser technology in military field. Laser fuse has a confidentiality and anti-interference because of the monochromaticity and directivity of laser. And directivity greatly increases location accuracy of the fuse. High intensity can increase sensibility of the fuse. Now laser fuse has been applied in aerial bomb, rocket, missile and antitank missile. So it is very important to increase explosive accuracy of laser fuse.This thesis analyzed space Gauss distribution of laser, and deduced time domain of echo impulse power and then obtained echo impulse power waveform. Variation of echo impulse width and echo wave power with incident angle and effect distance was given by number calculation with Matlab language. And echo impulse waveforms had been studied when laser irradiates oblique target, circle target and step target. Echo impulse waveform of laser fuse with the noise interference also has been studied in this thesis.Wavelet analysis was introduced to filter the noise interference basing on echo waveform of laser fuse. Two digitized method– weighted average and peak detection were used to obtain reference of echo waveform of laser fuse according to some flaw in threshold method then the range accuracy obtained by these two methods was compare with that obtained by threshold method.It is concluded that numeralization processing method presented in this article has a more high ranging accuracy than threshold method, which has very important meaning for numeralization processing of laser fuse.