Study on multi-pulse long range laser ranging system

In order to extract the weak signal in the long distance pulsed laser ranging, this paper uses the AD sampling rate of 1GHZ sampling rate to digitally collect the echo signal. According to the non - correlation of the noise, using the multi - pulse coherent superposition method, the useful signal strength is And then the signal-to-noise ratio can be improved. At the same time, the method of wavelet singular value filtering is used to process the accumulated signal to improve the measurement precision and realize the control system by FPGA and other hardware. In this paper, the measurement targets at different distances are tested, and the results show that the method can greatly improve the measurement accuracy of the laser ranging system.