Design of pulse laser high-precision ranging algorithm under low signal-to-noise ratio

Abstract Because the traditional pulse laser high-precision ranging method has problems of low accuracy and long time, a algorithm under signal-to-noise ratio is proposed. Based on analysis basic principle ranging, signal obtained by modeling echo analog waveform. The wavelet denoising improved threshold function used to denoise ratio. According processing results, carried out through sinusoidal amplitude time conversion. simulation results show that proposed high precision short time.