基于CCD的侧向激光雷达系统研制及探测个例

后向散射激光雷达技术已广泛应用于大气气溶胶的探测,但由于有盲区和过渡区,限制了它在近距离段的探测范围和精度。侧向散射激光雷达技术没有后向散射激光雷达技术中的上述缺陷,可实现近距离段气溶胶信号的连续探测,且探测精度较高。开发研制了基于CCD的侧向散射激光雷达系统,它由激光发射、光学接收、几何定标及数据采集等子系统组成。与后向散射激光雷达的对比探测个例表明,该激光雷达系统数据可靠,近距离的有效探测范围为0.02~4 km。这一系统的建立为进一步深入研究近地面层的气溶胶时、空分布奠定了坚实的基础。

Development and case study of side-scatter lidar system based on charge-coupled device

The backscatter lidar technique is widely applied to atmospheric aerosol detection, but the blind and transition regions restrict its detecting range and precision in near distance. Side-scatter lidar technique without above shortage can detect aerosol continuously in near distance, and has good precision. A side-scatter lidar system was developed, which is composed of transmitter, receiver, geometric calibration, and data acquisition subsystems. Comparison experiment with backscatter lidar indicates that the data acquired from this lidar are reliable and the near detection effective range is from 0.02-4 km. This system can be used for study the spatio-temporal distribution of atmospheric aerosol in near surface further.