公开(公告)号：EP2518529A3

公开(公告)日：2012-12-05

申请号：EP12164337.3

申请日：2012-04-16

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Ray, Mark D

IPC: G01S17/95 ,  G01S7/499 ,  B64D15/20

CPC classification number: B64D15/20 ,  G01S7/499 ,  G01S17/95 ,  Y02A90/19

Abstract: An apparatus for detecting icing conditions on an aircraft. The apparatus including a laser system configured and operative to generate a light signal and direct the light signal into a cloud and a lens component configured and operative to collect echo signals from a cloud caused by the light signal directed into the cloud by the laser system. The apparatus further includes a beam splitter component configured and operative to redirect signals received and passing through the lens component into at least first and second paths. Further provided is a supercooled large droplet (SLD) detector positioned to receive the redirected signals from the beam splitter. The SLD includes a first signal detector component configured and operative to perform a first color measurement on the first redirected signal; and a second signal detector component configured and operative to perform a second color measurement on the second redirected signal wherein the SLD detector is configured and operative to use the first and second color measurements to determine liquid water content and droplet diameter distribution for the cloud in which the light signal was directed into by the laser system.

公开(公告)号：EP2518529A2

公开(公告)日：2012-10-31

申请号：EP12164337.3

申请日：2012-04-16

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Ray, Mark D

IPC: G01S17/95 ,  G01S7/499 ,  B64D15/20

CPC classification number: B64D15/20 ,  G01S7/499 ,  G01S17/95 ,  Y02A90/19

Abstract: An apparatus for detecting icing conditions on an aircraft. The apparatus including a laser system configured and operative to generate a light signal and direct the light signal into a cloud and a lens component configured and operative to collect echo signals from a cloud caused by the light signal directed into the cloud by the laser system. The apparatus further includes a beam splitter component configured and operative to redirect signals received and passing through the lens component into at least first and second paths. Further provided is a supercooled large droplet (SLD) detector positioned to receive the redirected signals from the beam splitter. The SLD includes a first signal detector component configured and operative to perform a first color measurement on the first redirected signal; and a second signal detector component configured and operative to perform a second color measurement on the second redirected signal wherein the SLD detector is configured and operative to use the first and second color measurements to determine liquid water content and droplet diameter distribution for the cloud in which the light signal was directed into by the laser system.

Abstract translation: 一种用于检测飞机上的结冰条件的装置。 该装置包括配置并可操作以产生光信号并将光信号引导到云中的激光系统，以及配置并可操作以从由云中引导的光信号从云收集回波信号的激光系统。 该装置还包括一个分束器部件，该分束器部件被配置并且可操作地将接收的和经过透镜部件的信号重定向到至少第一和第二路径。 进一步提供了一种过冷大滴（SLD）检测器，定位成接收来自分束器的重定向信号。 SLD包括配置和操作以对第一重定向信号执行第一颜色测量的第一信号检测器部件; 以及第二信号检测器组件，其被配置和操作以对所述第二重定向信号执行第二颜色测量，其中所述SLD检测器被配置并且可操作以使用所述第一和第二颜色测量来确定云的液态水含量和液滴直径分布，其中 光信号被激光系统导入。

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）]。