多普勒激光雷达风场反演研究进展

多普勒激光雷达因高精度测量、高空分辨率等特点对晴空天气的风场探测具有重要应用价值,但多普勒激光雷达只能获取径向风速,必需进行风场反演。介绍了单部和多部多普勒激光雷达的风场反演技术的国内外进展及优缺点,其风场反演算法主要在微波雷达的基础上进行优化和创新。结果表明,单部多普勒激光雷达中变分方法是最有前途的方法;早期多部雷达普遍存在同一性的问题,对多部多普勒激光雷达也没有提出更有效的方法,变分方法的提出使得单部雷达和多部雷达不再有根本的区别,同化方法成为今后的研究重点(典型方法是变分同化)。

Research progress in wind field inversion of Doppler lidar

Doppler lidar has important application value for detecting wind field in clear sky because of its high precision measurement and high resolution.However,Doppler lidar can only obtain radial wind speed,so it is necessary to carry out wind field inversion.This paper introduces the development,advantages and disadvantages of wind field inversion technology of single Doppler lidar and multi-Doppler lidar at home and abroad.The results show that the variational method is the most promising method in the single Doppler lidar and many radars had the same problem in the early stage,there was no more effective method for the multi-Doppler lidar,with the introduction of variational method,there is no fundamental difference between single radar and multi-radar,and the assimilation method becomes the focus of future research(the typical method is variational assimilation).