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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。
A dual mode data acquisition system (DMDAQ) was developed for Doppler wind lidar (15 ~ 60 km) in mid-high level atmosphere. The system’s technical indicators have reached the international advanced level, not only meet the high-level atmospheric Doppler wind lidar linear dynamic detection range, high spatial and temporal resolution of the technical requirements, and its high level of integration, reconfigurable features to meet the current Car DWL development of small and medium sized and update the need to upgrade. In order to verify the performance of the data acquisition system, a wind field observation and comparison experiment was carried out. The results show that the results obtained from the on-board DWL system for wind field observation are basically the same as the balloon detection results in the overlapping area (15 ~ 35 km). At the same time, real-time echo signal analysis of on-board DWL systems shows a wind speed measurement accuracy of 6 m / s over a 60 km altitude.