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In order to solve the problems of low localization rate and poor stability of laser ranging system, a system based on the TDC-GP22 timing unit and the pulsed laser ranging method in the time-of-flight (TOF) method is designed to realize laser ranging. The domestic AL0905P75WT18-03FW laser diode and power MOS tube are used as the laser transmitter module to realize the high stability of laser emission, and the domestic AA-S0905 L0500 LCC3-2-B avalanche diode is used as the laser detector to convert the optical signal into current signal, which is further processed by amplification, filtering and so on and then passed through the TDC-GP22 to realize the laser distance measurement. After further processing, the light signal is converted into current signal through amplification, filtering and other further processing, through TDC-GP22 timing, thus realizing laser distance measurement. The system adopts domestic light source and photodetector, domestic voltage regulator chip, operational amplifier and FPGA chip, which improves the reliability, stability and autonomy of the system.
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