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1.发明专利Apparatus and method for in-flight detection of airborne water droplets and ice crystals 有权飞行器水滴和冰晶体飞行检测装置及方法
公开(公告)号：JP2010112952A
公开(公告)日：2010-05-20
申请号：JP2009254045
申请日：2009-11-05
Inventor： RAY MARK D , NESNIDAL MICHAEL P , SOCHA DAVID M
CPC classification number: B64D15/20
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for optically detecting and identifying liquid waterdrops and ice crystals in the air, including an irradiation part and a detection part. SOLUTION: The irradiation part outputs irradiated beams of circularly polarized light. The detection part receives back-scattered light of circularly polarized light from water content in clouds, in response to irradiation beam. The back-scattered light of circularly polarized light is passed through a circularly polarized light device and converted to the back scattered light of linearly polarized light, and the converted light is divided into two components. By an optional selection, each of the two components is subjected to further receiving a linearly polarized light for removing all orthogonally polarized light of leakage type. Next, two components are detected optically and by using the resulting detection signal, one or more parameters reflecting the presence/absence of ice crystal and/or waterdrops in the air are calculated. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于光学检测和识别空气中的液体水滴和冰晶的装置，包括照射部分和检测部分。 照射部输出照射的圆偏振光束。 检测部分响应于照射束，从云中的含水量接收圆偏振光的反向散射光。 圆偏振光的背散射光通过圆偏振光装置并转换为线偏振光的后向散射光，并将转换的光分成两部分。 通过可选择的选择，两个分量中的每一个进一步接收用于去除所有泄漏类型的正交偏振光的线性偏振光。 接下来，光学地检测两个分量，并且通过使用所得到的检测信号，计算反映空气中存在/不存在冰晶和/或水滴的一个或多个参数。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：AU2009222502A1
公开(公告)日：2010-05-20
申请号：AU2009222502
申请日：2009-09-30
Applicant: ROSEMOUNT AEROSPACE INC
Inventor： NESNIDAL MICHAEL P , RAY MARK D , SOCHA DAVID M
IPC: G01N21/00
Abstract: A device for optically detecting and distinguishing airborne liquid water droplets and ice crystals includes an illumination portion and a detection portion. The illumination portion (312) outputs a circularly polarized illuminating beam (318). The detection portion receives circularly polarized backscattered light from moisture in the cloud, in response to the illuminating beam. The circularly polarized backscattered light (322) is passed through a circular polarizer (333) to convert it into linearly polarized backscattered light, which is split into two components. Each of the two components is optionally subject to further linear polarization to filter out any leakage-type orthogonal polarization. The two components are then optically detected and the resulting detection signals are used to calculate one or more parameters reflective of the presence or absence of airborne ice crystals and/or water droplets.
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