Design of Lidar Data Acquisition Card Based on FPGA

As one of the effective means of atmospheric detection, lidar is gradually developing towards miniaturization and light weight. Aiming at the functional specificity of lidar, the detection and acquisition system is integrated and optimized based on field programmable gate array (FPGA). Each module in the logic completes the construction and transmission of the data link through the orderly cooperation of the handshake protocol and the synchronous finite state machine. The system uses FIFO as the data memory of ADC, and buffers the data burst of FIFO into DDR through AXI bus protocol and Xilinx MIG IP in an orderly manner, and completes the transmission of collected data through Gigabit Ethernet. The lidar data acquisition card integrates photomultiplier tube gain control and echo signal acquisition functions, and adopts compatible hardware and logic design.