INTEGRATION METHOD AND RATIO METHOD FOR RETRIEVING EXTINCTION COEFFICIENT FROM LIDAR SIGNALS     

赵燕曾  胡裕良  赵红接 《大气科学进展》1984,(1)

New solution techniques to improve the accuracy of quantitatively determining the atmospheric extinction coefficient and the backscattering-to-extinction ratio from lidar signals are developed. The integration method is proposed to analytically retrieve the extinction coefficient at ground level, which has the advantage of eliminating the effect of backscattering fluctuations on the inversion results.The ratio method, on the other hand, deals with the inversion of the vertical distribution of the extinction coefficient. The main idea of this method is to begin with a calculation of the transmittance by eliminating the backscattering through ratioing lidar signals at two elevations, and subsequently derive the extinction coefficient from the transmittance, thus avert from ambiguous results caused by inappropriate assumptions on the backscattering-to-extinction ratio. Observational investigations have demonstrated that the integration method is superior to the slope method in terms of accuracy and stabili  相似文献   

激光气象雷达数据处理系统     

胡裕良  黄其荣  郑斯平  黄忠芳 《气象》1986,12(2):13-15

一、前言 1979年以前,我们大气物理研究所已经研制了三台中小型激光雷达和一台大型激光雷达,并正在研制双波长激光雷达。利用这些中小型激光雷达开展了一系列大气探测方面的研究,取得许多成果,但数据处理工作仍采用人工处理方式,无法实时应  相似文献   

激光探测大气扩散参数     

孙景群  金惠淑  胡裕良 《大气科学》1977,1(1):36-43

利用红宝石激光雷达,在烟粒形状任意(或晶轴取向任意)和烟粒成分和谱分布稳定,以及一次散射和独立散射条件下,探测了烟羽相对浓度的垂直剖面分布,从而获得不同天气条件下离烟源下风向一定距离范围内大气扩散参数σ_y和σ_z。  相似文献