【摘要】 研制了应用于中高层大气(15~60 km)多普勒测风激光雷达(DWL)的双模式数据获取系统(DMDAQ)。该系统技术指标达到国际先进水平,不仅满足了中高层大气多普勒测风激光雷达线性动态探测范围大、时空分辨率高的技术要求,而且以其集成度高、可重构的特性满足当前车载DWL研制中小型化和更新升级的需要。为了验证该数据获取系统的性能,进行了风场观测对比实验。结果显示,车载DWL系统对风场观测的结果与气球探测结果在重叠区域(15~35 km)上基本一致。同时,对车载DWL系统的实时回波信号分析显示,在60 km探测高度上的风速测量精度为6 m/s。更多还原

【Abstract】 A double mode data acquisition(DMDAQ) system is developed for Doppler wind Lidar(DWL) in the upper atmosphere(15~60 km). The technical indicators of the system reach international advanced level. The DMDAQ system not only satisfies the requirements of upper atmospheric DWL with the properties of wide linear dynamic detection range and excellent spatial and temporal resolution, but also conveniently to update and incorporate in the miniaturization mobile DWL system due to its high integration and reconfigurable characteristics. In order to evaluate the performance of the DMDAQ system, the wind field observation contrast experiment is carried out. The result reveals that the Lidar observation agrees well with the radiosonde balloon in the height range of overlapping data(15~35 km). Besides, the accuracy of wind velocity is 6 m/s in the 60 km detection height according to the simultaneous DWL echo signal.更多还原