基于相关运算的LIDAR测风速

风速测量是激光雷达的应用之一。文中详细讨论了利用相关算法处理激光雷达采集的大气气溶胶回波信号计算风速的方法。介绍大气气溶胶回波信号的前处理，推演便于计算机处理的相关运算计算风速公式，运用Ｍａｔｌａｂ 语言实现信号预处理及风速计算，给出实验结果并与香港天文台数据作比较分析，指出该方法的优点及局限性

Wind Velocity Measurement by LIDAR with Correlation Analysis

Wind velocity measurement is one of application areas of LIDAR (light detection and range). A simple method of measuring the wind velocity is designed and the processing of aerosol data acquired by LIDAR with correlation analysis to get wind velocity is discussed in detail. Laser beam scans small range with a narrow angle over the horizontal plane and aerosol data are acquired at each side of scanning. Aerosol data need to be calibrated when errors caused in the measurement are existed by some factors such as range, electrical noise of the receiver, background noise and turbulence of atmosphere. Four pre processing methods are used. Formula of correlation analysis on aerosol data is deduced to get wind velocity. Matlab language is used in data pre processing and calculation of correlation. The result of comparing LIDAR measurement with balloon measurement is presented, which proves that LIDAR method is reliable. In conclusion, advantages and the disadvantages are discussed as well.