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公开(公告)号：US10320141B2
公开(公告)日：2019-06-11
申请号：US15784799
申请日：2017-10-16
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Sherwood Miller , Mark Ray
Abstract: A system and method for detecting hard targets in a free-space laser system includes a laser, an optical detector, and electronics. The laser is configured to emit a laser beam along an optical path through transmitter optics into a field of view. The optical detector is positioned along a laser transmitter path and configured to receive retroreflections of the laser beam. The electronics are configured to determine if an output of the optical detector is indicative of presence of a hard target within the field of view, and control the laser to a safe state if the output is indicative of presence of the hard target.
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公开(公告)号：US20190115710A1
公开(公告)日：2019-04-18
申请号：US15784799
申请日：2017-10-16
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Sherwood Miller , Mark Ray
Abstract: A system and method for detecting hard targets in a free-space laser system includes a laser, an optical detector, and electronics. The laser is configured to emit a laser beam along an optical path through transmitter optics into a field of view. The optical detector is positioned along a laser transmitter path and configured to receive retroreflections of the laser beam. The electronics are configured to determine if an output of the optical detector is indicative of presence of a hard target within the field of view, and control the laser to a safe state if the output is indicative of presence of the hard target.
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公开(公告)号：US10261006B2
公开(公告)日：2019-04-16
申请号：US15216340
申请日：2016-07-21
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
Abstract: Apparatus and associated methods relate to determining sizes of water particles in a cloud atmosphere based on a detected portion of signals generated from a single monochromatic source and backscattered by water particles in a cloud atmosphere. A backscatter coefficient and an optical extinction coefficient are calculated, based on the detected portion of signals generated from the monochromatic source and backscattered by water particles in the cloud atmosphere. A LIDAR ratio—a ratio of the optical extinction coefficient to the backscatter coefficient, is calculated. Sizes of water particles in the cloud atmosphere are estimated based on the LIDAR ratio. An output signal indicative of the estimated sizes of water particles in the cloud atmosphere is generated. Estimating sizes of water particles using signals from a single monochromatic source advantageously can alert a pilot of an aircraft of cloud conditions, without requiring multi-chromatic sources.
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公开(公告)号：US20190094415A1
公开(公告)日：2019-03-28
申请号：US15718605
申请日：2017-09-28
Applicant: Rosemount Aerospace Inc.
Inventor： Magdi A. Essawy , Mark Ray
Abstract: An aircraft system is configured to detect conditions of a cloud. The aircraft system includes a laser emitter, a fluorescent filter, optics, and an imager. The laser emitter generates a short pulse laser beam. The fluorescent filter is configured to convert the short pulse laser beam into a short pulse light beam such that the spectral content of the short pulse light beam is greater than the spectral content of the short pulse laser beam. The optics are configured to direct the short pulse light beam through a window of the aircraft into the cloud. The imager is configured to receive a reflected portion of the short pulse light beam from the cloud, and process the images to detect the cloud particles of interest.
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公开(公告)号：US10031059B1
公开(公告)日：2018-07-24
申请号：US15411520
申请日：2017-01-20
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Kaare Josef Anderson
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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Patent Agency Ranking
6.发明授权公开(公告)号：US11827365B2
公开(公告)日：2023-11-28
申请号：US17503724
申请日：2021-10-18
Applicant: Rosemount Aerospace Inc.
Inventor： Kaare Josef Anderson , Mark Ray , Kent Allan Ramthun
IPC: B64D15/20 , G01N21/3577 , G01W1/00
CPC classification number: B64D15/20 , G01N21/3577 , G01W1/00
Abstract: A method of operating an optical icing conditions sensor includes transmitting a first light beam with a first transmitter and a second light beam with a second transmitter, thereby illuminating two illumination volumes. A first receiver receives the first light beam. A second receiver receives the second light beam. A controller measures the intensity of light received by the first and second receivers. The controller compares the intensities to threshold values and determines if either intensity is greater than the threshold values. The controller determines a cloud is present if either intensity is greater than the threshold values. The controller calculates a ratio of the intensities if a cloud is present. The controller determines, using the ratio, whether the cloud contains liquid water droplets, ice crystals, or a mixture of liquid water droplets and ice crystals.
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公开(公告)号：US20230122889A1
公开(公告)日：2023-04-20
申请号：US17503728
申请日：2021-10-18
Applicant: Rosemount Aerospace Inc.
Inventor： Kaare Josef Anderson , Mark Ray , Kent Allan Ramthun , Mark Sherwood Miller
Abstract: A method of operating an optical icing conditions sensor includes transmitting, with a transmitter, a light beam and thereby illuminating an illumination volume. A receiver array receives light over a range of receiving angles. The receiver array is configured to receive light having the wavelength over a receiver array field of view which overlaps with the illumination volume. A controller measures an intensity of light received by the receiver array. The controller determines that a cloud is present if the intensity is greater than a threshold value. The controller calculates scattering profile data of the light received by the receiver array if a cloud is determined to be present, which includes an angle of a scattering intensity peak within the range of receiving angles and a breadth of the scattering intensity peak. The controller estimates a representative droplet size within the cloud using the scattering profile data.
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8.发明申请公开(公告)号：US20230118338A1
公开(公告)日：2023-04-20
申请号：US17503724
申请日：2021-10-18
Applicant: Rosemount Aerospace Inc.
Inventor： Kaare Josef Anderson , Mark Ray , Kent Allan Ramthun
IPC: B64D15/20 , G01N21/3577 , G01W1/00
Abstract: A method of operating an optical icing conditions sensor includes transmitting a first light beam with a first transmitter and a second light beam with a second transmitter, thereby illuminating two illumination volumes. A first receiver receives the first light beam. A second receiver receives the second light beam. A controller measures the intensity of light received by the first and second receivers. The controller compares the intensities to threshold values and determines if either intensity is greater than the threshold values. The controller determines a cloud is present if either intensity is greater than the threshold values. The controller calculates a ratio of the intensities if a cloud is present. The controller determines, using the ratio, whether the cloud contains liquid water droplets, ice crystals, or a mixture of liquid water droplets and ice crystals.
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公开(公告)号：US10725173B2
公开(公告)日：2020-07-28
申请号：US15176659
申请日：2016-06-08
Applicant: Rosemount Aerospace Inc.
Inventor： Mark Ray , Mark Sherwood Miller
IPC: G01S13/95 , G01S7/481 , G01S7/499 , B64D15/20 , G01S13/86 , G01S7/02 , G01S17/95 , G02B27/14 , G02B27/28
Abstract: An aircraft ice detection system is configured to determine a condition of a cloud and includes a radar system, a lidar system, optics and a dichroic filter. The radar system is configured to project quasi-optical radiation to the cloud and receive reflected quasi-optical radiation from the cloud. The lidar system is configured to project optical radiation to the cloud and receive reflected optical radiation from the cloud. The optics are configured to direct the quasi-optical radiation and the optical radiation to the cloud and receive the reflected quasi-optical radiation and the reflected optical radiation from the cloud. The dichroic filter is configured to direct the quasi-optical radiation from the radar system to the optics, direct the optical radiation from the lidar system to the optics, direct the reflected quasi-optical radiation from the optics to the radar system and direct the reflected optical radiation from the optics to the lidar system.
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公开(公告)号：US10451446B2
公开(公告)日：2019-10-22
申请号：US15875770
申请日：2018-01-19
Applicant: Rosemount Aerospace Inc.
Inventor： David Michael Socha , Mark Ray
IPC: G01D5/00 , G01D5/26 , G02B6/38 , G01F23/292 , G02B6/255 , H04B10/079 , H04B10/80
Abstract: Apparatus and associated methods relate to a system for interfacing with an optically-powered sensor. The system includes an optical emitter configured to emit a beam of optical energy so as to provide operating power for the optically-powered sensor. The system includes an optical detector configured to detect a time sequence of optical pulses generated by the optically-powered sensor, the time sequence of pulses modulated between first and second optical power levels. The system includes a parameter extractor configured to determine a value of a sensed parameter based on the time sequence of optical pulses detected by the optical detector. The system also includes a power controller configured to control power level of the emitted beam of optical energy based on the first and/or second optical power levels detected by the optical detector.
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