Chouza Fernando, Witschas Benjamin, Reitebuch Oliver
Appl Opt. 2017 Oct 10;56(29):8121-8134. doi: 10.1364/AO.56.008121.
In this work, a novel lidar technique to perform high-spectral-resolution measurements of the atmospheric backscatter is discussed and the first results are presented. The proposed method, which relies on a heterodyne detection receiver, allows us not only to separate the molecular and the aerosol component of the atmospheric backscatter, but also to investigate the spectral shape of the Rayleigh-Brillouin line. As in the case of the direct-detection high-spectral-resolution lidars, the separation of the different scattering processes would allow an independent system calibration and aerosol extinction measurements. The proposed retrieval technique was successfully tested on the Deutsches Zentrum für Luft- und Raumfahrt airborne Doppler wind lidar system with measurements conducted during different measurement campaigns and under different atmospheric conditions. In light of these results, further ideas for the implementation of a dedicated heterodyne high-spectral-resolution lidar are discussed.
在这项工作中，讨论了一种用于对大气后向散射进行高光谱分辨率测量的新型激光雷达技术，并展示了首批测量结果。所提出的方法依赖于外差探测接收器，不仅能分离大气后向散射中的分子和气溶胶成分，还能研究瑞利 - 布里渊线的光谱形状。与直接探测高光谱分辨率激光雷达的情况一样，不同散射过程的分离将允许进行独立的系统校准和气溶胶消光测量。所提出的反演技术已在德国航空航天中心的机载多普勒测风激光雷达系统上成功测试，测量在不同的测量活动期间以及不同的大气条件下进行。鉴于这些结果，还讨论了实施专用外差高光谱分辨率激光雷达的进一步设想。
