APPARATUS AND METHOD FOR DETECTING AIRCRAFT ICING CONDITIONS

    公开(公告)号:CA2775292C

    公开(公告)日:2019-08-06

    申请号:CA2775292

    申请日:2012-04-25

    Inventor: RAY MARK D

    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.

    42.
    发明专利
    未知

    公开(公告)号:BR102012019441A2

    公开(公告)日:2013-11-05

    申请号:BR102012019441

    申请日:2012-07-25

    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.

    Methods of determining the liquid water content of a cloud

    公开(公告)号:AU2012203739A1

    公开(公告)日:2013-05-16

    申请号:AU2012203739

    申请日:2012-06-27

    Abstract: In one aspect, 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 5 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, 10 determining from the lidar ratio a value pair comprising a shape parameter (p) and median volume diameter (DMVD) of the water droplets, and determining a size distribution of the water droplets using the value pair (pt, DMVD). Qa) U) 0 ) c E o (D Z000 U)a C () or :t-- > ) 0 ) C C ) a) ~ a) Lcuf)l E 0 E E 0 a 0aa C) "0 Z0( E: E *Q 0-0 a)cu -0 0- C)- 0 0 a) 0a) C) I o- VZ 0 * 0M C U) 0,2)U)U aa a aD aa E m E E E E ff af C) a) a

    LASER PERIMETER AWARENESS SYSTEM
    44.
    发明专利

    公开(公告)号:CA2526075C

    公开(公告)日:2012-07-03

    申请号:CA2526075

    申请日:2004-05-07

    Abstract: A method of laser scanning a perimeter zone of a target site for the detection of potential threats comprises: scanning a pulsed laser beam across the perimeter zone; receiving echoes from the pulsed laser beam and forming for a plurality of perimeter zone scans to form scene images. In addition, a method of authenticating a potential threat detected in a perimeter zone of a target site comprises: detecting the potential threat, interrogating the potential threat by a wireless transmission; declaring the potential threat unauthorized if no response is transmitted within a predetermined time interval or if the received response is determined not to comprise the proper access code.

    SISTEMA DE DETECCION DE LUZ Y DE DETERMINACION DE LA DISTANCIA.

    公开(公告)号:ES2370471T3

    公开(公告)日:2011-12-16

    申请号:ES10001507

    申请日:2008-11-06

    Abstract: Un procedimiento para determinar una distancia a una diana (40), el procedimiento comprende: hacer girar una unidad (16) de espejo alrededor de un eje (26) de exploración; reflejar un impulso luminoso de una parte (20) de transmisión de la unidad (16) de espejo hacia una diana (40); reflejar un impulso luminoso, recibido desde la diana (40), desde una parte (22) de recepción de la unidad (16) de espejo hacia un receptor (14) y compensar el desfase angular (56), provocado por la rotación de la unidad (16) de espejo alrededor del eje (26), entre el momento en el que el impulso luminoso se refleja desde la parte (20) de transmisión y el momento en el que impulso luminoso recibido se refleja desde la parte (22) de recepción; que se caracteriza porque: la compensación incluye el desalineamiento angular de la parte (20) de transmisión alrededor del eje (26) de exploración desde un plano superficial de la parte (22) de recepción.

    47.
    发明专利
    未知

    公开(公告)号:AT522823T

    公开(公告)日:2011-09-15

    申请号:AT08253634

    申请日:2008-11-06

    Abstract: A method for determining a range to a target comprises rotating a mirror unit around a scan axis. A light pulse is reflected off of a transmitting portion of the mirror unit toward the target. A light pulse, received from the target, is reflected off of a receiving portion of the mirror unit toward a receiver. The method includes compensating for a lag angle, caused by the rotation of the mirror unit around the axis, between the time the light pulse is reflected from the transmitting portion and the time the received light pulse is reflected from the receiving portion. The compensation includes angularly offsetting the transmitting portion about the scan axis from a surface plane of the receiving portion.

    SCANNING LADAR WITH ADJUSTABLE OPERATIONAL PARAMETERS

    公开(公告)号:CA2630653A1

    公开(公告)日:2008-11-11

    申请号:CA2630653

    申请日:2008-05-07

    Abstract: A LADAR has adjustable operational parameters to accommodate surveillance of a particular site. The LADAR includes a controller, a laser source governed by the controller to generate a laser beam pulsed at a pulse repetition rate, an optical scanner, a first set of optics, a first drive assembly governed by the controller, a second drive assembly governed by the controller, a light detector, a second set of optics for guiding lase r echo pulses, and a processor coupled to the light detector to accommodate surveillance of the particular site.

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