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A miniaturized, compact lidar data acquisition system based on the heterogeneous multi-core processor ZYNQ was developed to detect aerosol in the atmosphere. This paper introduced system structure of lidar, design method of the embedded program. The data acquisition system consist of ZYNQ processor, analog signal conditioning circuit, analog to digital signal converter with 12-bit resolution ,60 MHz sampling frequency and communication interface, etc. Using the system in combination with 355nm wavelength laser, telescope and other optical module, etc. echo signal of lidar is detected and data is transmitted to the host computer software via Ethernet. Compared with the traditional acquisition card which use Peripheral Component Interconnect (PCI) or PCI express interface communicating with Industrial Personal Computer (IPC), the volume and power consumption are reduced a lot. due to the analog circuit, the control center and the Gigabit Ethernet communication circuit are integrated on one board, the stability of the detection system is also improved, the paper provides a reference design for the miniaturization of the laser radar system.
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