Study for Measurement of Lidar Constant

A new method is presented to determinate lidar constant.Under the condition of homogenous horizontal atmosphere,the lidar constant can be calculated with transcendent knowledge about lidar ratio and American atmospheric mode.The source of error is analyzed and the biggest relative error of lidar constant caused by lidar constant error is lower than 12.27% theoretically.Finally lidar constant determinated with lidar returning signal is 600668.2 sr·km3 and its standard deviation is lower than 13%.The good consistency of result in different time indicates the feasibility of the method.The achievement of lidar constant can be offer convenience for retrieve of aerosol in lidar equation and evaluation of lidar system.