公开(公告)号：EP2587277B1

公开(公告)日：2016-12-07

申请号：EP12187946.4

申请日：2012-10-10

Applicant: ROSEMOUNT AEROSPACE INC.

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

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

CPC classification number: G01S17/95 ,  B64D15/20 ,  G01N15/0211 ,  G01N2015/0026 ,  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 the cloud with a beam of electromagnetic radiation, measuring a scattering signal of the electromagnetic radiation returned from the cloud over a range of field of view angles to provide a measured scattering curve [ p total (¸)], removing a portion of the measured scattering curve, replacing the removed portion with an extrapolation of the remaining measured scattering curve to provide an estimated scattering curve, and determining a first estimate droplet size distribution [ n (1) (D)] from the estimated scattering curve.

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。

公开(公告)号：EP2587277A1

公开(公告)日：2013-05-01

申请号：EP12187946.4

申请日：2012-10-10

Applicant: ROSEMOUNT AEROSPACE INC.

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

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

CPC classification number: G01S17/95 ,  B64D15/20 ,  G01N15/0211 ,  G01N2015/0026 ,  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 the cloud with a beam of electromagnetic radiation, measuring a scattering signal of the electromagnetic radiation returned from the cloud over a range of field of view angles to provide a measured scattering curve [ p total (θ)], removing a portion of the measured scattering curve, replacing the removed portion with an extrapolation of the remaining measured scattering curve to provide an estimated scattering curve, and determining a first estimate droplet size distribution [ n (1) (D)] from the estimated scattering curve.

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，确定云中的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，测量在视场范围内从云返回的电磁辐射的散射信号 角度以提供测量的散射曲线[p total（¸）]，去除测量的散射曲线的一部分，用剩余测量的散射曲线的外推替换去除的部分以提供估计的散射曲线，以及确定第一估计液滴 尺寸分布[n（1）（D）]。