【作者】 董晶晶； 岳斌； 孙东松； 沈法华；

【Author】 DONG Jing-jing, YUE Bin, SUN Dong-song, SHEN Fa-hua (Anhui Institute of Optics & Fine Mechanics, CAS, Hefei 230031, China)

【机构】 中国科学院安徽光学精密机械研究所；

【摘要】 直接探测多普勒测风激光雷达因具有测量精度高、空间分辨率高、三维风场分布等特点,成为目前国际上主流的大气风场测量手段。测风激光雷达使用高灵敏的单光子探测器接收大气的后向散射信号,但受探测器动态范围的限制,必须在低空具有强后向散射信号时关闭探测器,高空时打开探测器来保护探测器,并且对不同的天气情况探测器的开关时间也有所差别。采用FPGA(Field Programmable Gate Array)和MCU(Microprocessor Control Unit)结合的电路设计有效地解决了探测器控制的问题。更多还原

【Abstract】 Using direct-detection Doppler wind lidar to measure atmospheric winds has become an important and popular meteorological technique for its high-precision, high spatial resolution and three-dimensional information. Wind lidar using high-sensitivity single photo counting detector receivers atmosphere backscatter. Due to detector’s dynamic range is small, detector should be closed in low atmosphere and opened in high atmosphere to avoid be destroyed, and in different weather, gate timing should be different. Combined FPGA(Field Programmable Gate Array) with MCU(Microprocessor Control Unit) gate circuit solves this problem successfully.更多还原