公开(公告)号：EP2587278A1

公开(公告)日：2013-05-01

申请号：EP12187949.8

申请日：2012-10-10

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Ray, Mark D ,  Halama, Gary E ,  Anderson, Kaare J ,  Nesnidal, Michael P

IPC: G01S17/95 ,  G01S7/497 ,  G01N15/02 ,  B64D15/20

CPC classification number: G01S17/95 ,  G01N15/0205 ,  G01S7/497 ,  Y02A90/19

Abstract: Methods of determining a size distribution of water droplets in a cloud are described herein. In some embodiments, a method of determining a size distribution of water droplets in a cloud comprises sampling a depth of a cloud with a beam of electromagnetic radiation, measuring echo intensities of the electromagnetic radiation returned from the cloud with a detector, determining a measured optical extinction coefficient from the measured echo intensities, determining a measured backscatter coefficient from the measured echo intensities, determining a lidar ratio from the measured optical extinction coefficient and the measured backscatter coefficient, determining from the lidar ratio a value pair comprising a shape parameter (µ) and median volume diameter (D MVD ) of the water droplets, and determining a size distribution of the water droplets using the value pair (p, D MVD ).

Abstract translation: 本文描述了确定云中水滴尺寸分布的方法。 在一些实施例中，确定云中水滴的尺寸分布的方法包括用电磁辐射束对云的深度进行采样，使用检测器测量从云返回的电磁辐射的回波强度，确定测量的光 根据测量的回波强度确定消光系数，根据测量的回波强度确定测量的反向散射系数，从测量的光消光系数和测量的反向散射系数确定激光雷达比，从激光雷达比确定包括形状参数（μ）的值对， 和水滴的中值体积直径（D MVD），以及使用值对（p，D MVD）确定水滴的尺寸分布。