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    LARGE DROPLET DETECTION BY STATISTICAL FLUCTUATIONS IN LIDAR BACKSCATTER
    11.
    发明申请
    LARGE DROPLET DETECTION BY STATISTICAL FLUCTUATIONS IN LIDAR BACKSCATTER 有权
    激光雷达放大器中的统计波动的大量检测

    公开(公告)号：US20140379263A1

    公开(公告)日：2014-12-25

    申请号：US13923808

    申请日：2013-06-21

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark D. Ray ,  Kaare Josef Anderson ,  Mark Sherwood Miller

    IPC: G01S17/95

    CPC classification number: G01S17/95 ,  G01S7/4802 ,  Y02A90/19

    Abstract: A method of optically detecting the presence of a bimodal droplet size distribution in the atmosphere. The method comprising monitoring statistical fluctuations in a backscattered signal received from a series of pulsed laser light beams directed into a cloud and analyzing the statistics of the fluctuations of the backscattered signals to identify the presence of larger diameter droplets.

    Abstract translation: 一种在大气中光学检测双峰液滴尺寸分布的存在的方法。 该方法包括监测从指向云中的一系列脉冲激光束接收的反向散射信号中的统计波动，并分析反向散射信号的波动的统计，以识别更大直径的液滴的存在。

    INTEGRATED STANDOFF OPTICAL ICE DETECTION AND HUMIDITY SENSING
    12.
    发明申请
    INTEGRATED STANDOFF OPTICAL ICE DETECTION AND HUMIDITY SENSING 有权

    公开(公告)号：US20250067899A1

    公开(公告)日：2025-02-27

    申请号：US18236041

    申请日：2023-08-21

    Applicant: Rosemount Aerospace Inc.

    Inventor： David L. Lincoln ,  Mark D. Ray ,  Darren G. Jackson ,  Kaare Josef Anderson ,  Jose-Rodrigo Castillo-Garza ,  Michael T. Gorski

    IPC: G01W1/06 ,  G01S17/86 ,  G01S17/95 ,  G08G5/00

    Abstract: A system includes an optical ice detection (OID) sub-system optically coupled to light collection optics. A water vapor differential absorption LIDAR (WV-DIAL) sub-system is optically coupled to the OID laser source or light collection optics. The OID sub-system and the WV-DIAL sub-system share at least a portion of an optical path of the light source or through the light collection optics. The OID sub-system, the WV-DIAL sub-system, and the illumination and light collection optics can all be aboard an aircraft. A method includes using a set of illumination and light collection optics aboard an aircraft to obtain data indicative of optical ice detection (OID) and water vapor differential absorption LIDAR (WV-DIAL), e.g. to detect contrail forming conditions for the aircraft and/or predict persistence of contrails from the aircraft.

    Determining metrics of a cloud atmosphere using time-difference measurements
    13.
    发明授权
    Determining metrics of a cloud atmosphere using time-difference measurements 有权

    公开(公告)号：US11630215B2

    公开(公告)日：2023-04-18

    申请号：US16275152

    申请日：2019-02-13

    Applicant: Rosemount Aerospace Inc.

    Inventor： Cuong Tho Huynh ,  Kaare Josef Anderson

    IPC: G01S17/95

    Abstract: Apparatus and associated methods relate to determining metrics of a cloud atmosphere using time difference measurements. A light projector projects a pulse of light into a cloud atmosphere, and a light sensor detects a portion of the projected pulse of light backscattered by the cloud atmosphere. A backscatter coefficient is calculated based on peak amplitude of the detected portion. An optical extinction coefficient is calculated based on a time difference between a peak time and a post-peak time, which correspond to times at which the peak amplitude of the detected portion occurs and at which the detected portion equals or crosses a sub-peak threshold, respectively. In some embodiments, a logarithm amplifier is used to facilitate processing of signals of widely varying amplitudes. In some embodiments, the sub-peak threshold is calculated as a fraction of the peak amplitude of the detected portion.

    PREDICTING FAILURE AND/OR ESTIMATING REMAINING USEFUL LIFE OF AN AIR-DATA-PROBE HEATER
    14.
    发明申请
    PREDICTING FAILURE AND/OR ESTIMATING REMAINING USEFUL LIFE OF AN AIR-DATA-PROBE HEATER 有权

    公开(公告)号：US20220317202A1

    公开(公告)日：2022-10-06

    申请号：US17218060

    申请日：2021-03-30

    Applicant: Rosemount Aerospace Inc.

    Inventor： Kaare Josef Anderson ,  Magdi A. Essawy

    IPC: G01R31/56 ,  G01R31/52

    Abstract: Apparatus and associated methods relate to predicting failure and/or estimating remaining useful life of an air-data-probe heater. Failure is predicted or useful life is estimated based on an electrical metric of the electrical operating power provided to a resistive heating element of the air-data-probe heater. The electrical metric of the air data probe heater is one or more of: i) phase relation between voltage across the resistive heating element and leakage current, which is conducted from the resistive heating element to a conductive sheath surrounding the resistive heating element; ii) a time-domain profile of leakage current through the heating element insulation during a full power cycle; and/or iii) high-frequency components of the electrical current conducted by the resistive heating element and/or the voltage across the resistive heating element.

    DETERMINING METRICS OF A CLOUD ATMOSPHERE USING TIME-DIFFERENCE MEASUREMENTS
    15.
    发明申请
    DETERMINING METRICS OF A CLOUD ATMOSPHERE USING TIME-DIFFERENCE MEASUREMENTS 审中-公开

    公开(公告)号：US20200257001A1

    公开(公告)日：2020-08-13

    申请号：US16275152

    申请日：2019-02-13

    Applicant: Rosemount Aerospace Inc.

    Inventor： Cuong Tho Huynh ,  Kaare Josef Anderson

    IPC: G01S17/95

    Abstract: Apparatus and associated methods relate to determining metrics of a cloud atmosphere using time difference measurements. A light projector projects a pulse of light into a cloud atmosphere, and a light sensor detects a portion of the projected pulse of light backscattered by the cloud atmosphere. A backscatter coefficient is calculated based on peak amplitude of the detected portion. An optical extinction coefficient is calculated based on a time difference between a peak time and a post-peak time, which correspond to times at which the peak amplitude of the detected portion occurs and at which the detected portion equals or crosses a sub-peak threshold, respectively. In some embodiments, a logarithm amplifier is used to facilitate processing of signals of widely varying amplitudes. In some embodiments, the sub-peak threshold is calculated as a fraction of the peak amplitude of the detected portion.

    CONTROLLED SAMPLING VOLUME OF CLOUDS FOR MEASURING CLOUD PARAMETERS
    17.
    发明申请
    CONTROLLED SAMPLING VOLUME OF CLOUDS FOR MEASURING CLOUD PARAMETERS 有权

    公开(公告)号：US20180209887A1

    公开(公告)日：2018-07-26

    申请号：US15411520

    申请日：2017-01-20

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01N15/02 ,  G01N15/06 ,  G01W1/00

    CPC classification number: G01N15/0211 ,  B64D15/20 ,  G01N21/49 ,  G01N2015/0026 ,  G01S7/4811 ,  G01S7/4815 ,  G01S7/4818 ,  G01S17/95 ,  G01W1/00

    Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere by comparing detected optical signals reflected from small and large sampling volumes of a cloud atmosphere. In some embodiments, an optical pulse is generated and divergently projected from a first optical fiber. A collimating lens is aligned within the divergently projected optical pulse collimating a portion thereof. The collimated and uncollimated portions of the optical pulse are projected into the small and large sampling volumes of the cloud atmosphere, respectively. The ratio of the collimated to the uncollimated portions can be optically controlled. Signals corresponding to optical pulses having different collimated/uncollimated ratios are backscattered by the cloud atmosphere, detected and compared to one another. A processor is configured to calculate, based on scintillation spike differences between the optical pulses of different collimated/uncollimated ratios, a size and/or density of SLDs.

    Controlled sampling volume of clouds for measuring cloud parameters
    19.
    发明授权
    Controlled sampling volume of clouds for measuring cloud parameters 有权

    公开(公告)号：US09983112B1

    公开(公告)日：2018-05-29

    申请号：US15411548

    申请日：2017-01-20

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01N15/06 ,  G01N15/02 ,  G01W1/00

    CPC classification number: G01N15/0205 ,  B64D15/20 ,  G01N15/06 ,  G01N2015/0026 ,  G01N2015/0277 ,  G01N2015/0693 ,  G01S7/4811 ,  G01S7/4815 ,  G01S7/4818 ,  G01S17/95 ,  G01W1/00

    Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere by comparing detected optical signals reflected from small and large sampling volumes of a cloud atmosphere. In some embodiments, an optical pulse is generated and divergently projected from a first optical fiber. A collimating lens is aligned within the divergently projected optical pulse collimating a portion thereof. The collimated and uncollimated portions of the optical pulse are projected into the small and large sampling volumes of the cloud atmosphere, respectively. The ratio of the collimated to the uncollimated portions can be optically controlled. Signals corresponding to optical pulses having different collimated/uncollimated ratios are backscattered by the cloud atmosphere, detected and compared to one another. A processor is configured to calculate, based on scintillation spike differences between the optical pulses of different collimated/uncollimated ratios, a size and/or density of SLDs.

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