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公开(公告)号：EP3581964A1
公开(公告)日：2019-12-18
申请号：EP19180002.8
申请日：2019-06-13
发明人： RAY, Mark , ANDERSON, Kaare Josef
摘要： Apparatus and associated methods relate to reliably determining both size of large water droplets and density of small water droplets in a multi-modal cloud atmosphere. A pulsed beam of light is projected into the cloud atmosphere and a receiver (26) receives a reflected portion of the projected pulsed beam backscattered by the cloud atmosphere. The received reflected portion is split into first and second parts. First and second parts are directed to first and second detectors (36H, 36L), each having a different gain. A ratio of the gains of the first and second detector (36H, 36L) is greater than 3:1, thereby providing a low-gain detector for producing unsaturated signals indicative of scintillation spike reflection by large water particles and a simultaneous high-gain detector for producing signals indicative of range-resolved reflections by numerous small water particles.
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公开(公告)号：EP3518440A1
公开(公告)日：2019-07-31
申请号：EP19151713.5
申请日：2019-01-14
发明人： SOCHA, David Michael , RAY, Mark
IPC分类号： H04B10/80
摘要： Apparatus and associated methods relate to a system (22) for interfacing with an optically-powered sensor (20). The system (22) includes an optical emitter (E; 62) configured to emit a beam of optical energy so as to provide operating power for the optically-powered sensor (20). The system (22) includes an optical detector (D; 64) configured to detect a time sequence of optical pulses generated by the optically-powered sensor (20), the time sequence of pulses modulated between first and second optical power levels. The system (22) includes a parameter extractor (40) configured to determine a value of a sensed parameter based on the time sequence of optical pulses detected by the optical detector (D; 64). The system (22) also includes a power controller (42) 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 (D; 64).
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公开(公告)号：EP3273269A1
公开(公告)日：2018-01-24
申请号：EP17182528.4
申请日：2017-07-21
发明人： RAY, Mark , ANDERSON, Kaare Josef
CPC分类号： G01W1/00 , G01N15/0211 , G01S7/4802 , G01S7/4815 , G01S7/4818 , G01S7/499 , G01S17/95 , Y02A90/19
摘要： Apparatus and associated methods relate to sampling a large volume of a cloud atmosphere so as to obtain a large signal response from even a sparse distribution of water droplets in the cloud atmosphere. Such a volume can be probed by projecting an uncollimated optical beam into the cloud atmosphere and sampling the signal backscattered from the water droplets located within the probed volume. The uncollimated optical beam can be generated by projecting a diverging pulse of light energy from a polished end of a first optical fiber. A second optical fiber can be used to receive the optical signal backscattered from the cloud atmosphere. The second optical fiber can also have substantially the same field of view as the first optical fiber, so as to receive signals from a volume of the cloud atmosphere that is substantially commensurate with the probed volume.
摘要翻译： 装置和相关方法涉及对大量云气氛进行取样，以便从云气氛中的水滴的稀疏分布甚至获得大的信号响应。 可以通过将未经过校正的光束投影到云气氛中并对从位于探测体积内的水滴反向散射的信号进行采样来探测这种体积。 未经校准的光束可以通过从第一光纤的抛光端投射光能的发散脉冲而产生。 第二根光纤可用于接收从云层大气反向散射的光信号。 第二光纤也可以具有与第一光纤基本相同的视场，以接收来自大体上与所探测的体积基本相称的云气氛的信号。
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公开(公告)号：EP3255458A1
公开(公告)日：2017-12-13
申请号：EP17171553.5
申请日：2017-05-17
发明人： RAY, Mark , MILLER, Mark Sherwood
摘要： An aircraft ice detection system (10; 100A; 100B; 100C) is configured to determine a condition of a cloud (12) and includes a radar transmitter (16; 108), a radar receiver (18; 110; 152), optics (20, 22; 102, 104) and a splitter (24; 134). The radar transmitter (16; 108) is configured to produce quasi-optical radiation. The optics (20, 22; 102, 104) are configured to direct the quasi-optical radiation from the radar transmitter (16; 108) to the cloud (12) and receive reflected quasi-optical radiation from the cloud (12). The radar receiver (18; 110; 152) is configured to receive the reflected quasi-optical radiation from the optics (20, 22; 02, 104) and the splitter (24; 134) is configured to direct the reflected quasi-optical radiation from the optics (20, 22; 102, 104) to the radar receiver (18; 110; 152).
摘要翻译： 一种飞机结冰检测系统（10; 100A; 100B; 100C）被配置为确定云（12）的状况并且包括雷达发射器（16; 108），雷达接收器（18; 110; 152），光学器件 20，22; 102,104）和分路器（24; 134）。 雷达发射器（16; 108）被配置为产生准光辐射。 光学器件（20,22; 102,104）被配置为将来自雷达发射器（16; 108）的准光辐射引导至云（12）并从云（12）接收反射的准光辐射。 雷达接收器（18; 110; 152）被配置为接收来自光学器件（20,22; 02,104）的反射的准光辐射，并且分离器（24; 134）被配置为将反射的准光辐射 从光学器件（20,22; 102,104）传输到雷达接收器（18; 110; 152）。
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5.发明公开OPTICALLY DETECTING CLOUD METRICS USING SAMPLED ANALOG MEASUREMENTS OF LIGHT REFLECTION 审中-公开使用光反射的样本模拟测量来光学检测云量度
公开(公告)号：EP3222527A1
公开(公告)日：2017-09-27
申请号：EP17158328.9
申请日：2017-02-28
发明人： ANDERSON, Kaare Josef , RAY, Mark
IPC分类号： B64D15/22 , B64D47/04 , B64D15/20 , G01N21/39 , G01S17/95 , G01N21/53 , G01N21/17 , G01S7/48 , G01S7/499 , G01S7/481 , G01S7/486
CPC分类号： B64D15/20 , B64D47/04 , G01N15/1434 , G01N21/21 , G01N21/538 , G01N2021/1795 , G01N2021/216 , G01N2021/4709 , G01N2021/4792 , G01N2201/0697 , G01S7/4802 , G01S7/4815 , G01S7/4865 , G01S7/499 , G01S17/95 , Y02A90/19
摘要： Apparatus and associated methods relate to determining metrics of water particles in clouds by directing light pulses at a cloud and measuring a peak, a post-peak value and a high-frequency fluctuation of light signals reflected from the cloud. The light pulses include: a first pulse having circularly polarized light of a first wavelength; and a second pulse of a second wavelength. The reflected light signals include: a first reflected light signal having left-hand circular polarization of the first wavelength; a second reflected light signal having right-hand circular polarization of the first wavelength; and a third reflected light signal of the second wavelength. An extinction coefficient and a backscatter coefficient are determined based on the measured peak and post-peak slopes of the first and second reflected light signals. The measured high-frequency fluctuations of the three reflected light signals can be used to calculate cloud particle sizes.
摘要翻译： 装置和相关方法涉及通过在云中引导光脉冲并测量从云反射的光信号的峰值，峰值后和高频波动来确定云中水粒子的度量。 光脉冲包括：具有第一波长的圆偏振光的第一脉冲; 和第二波长的第二脉冲。 反射光信号包括：具有第一波长的左旋圆偏振的第一反射光信号; 具有第一波长的右旋圆偏振的第二反射光信号; 和第二波长的第三反射光信号。 基于所测量的第一和第二反射光信号的峰值和峰值后斜率来确定消光系数和反向散射系数。 测得的三个反射光信号的高频波动可以用来计算云粒径。
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公开(公告)号：EP4152046A1
公开(公告)日：2023-03-22
申请号：EP22195232.8
申请日：2022-09-12
发明人： RAY, Mark
IPC分类号： G01S7/481 , G01S17/95 , G01S17/933
摘要： A multi-fiber optical sensor system (401, 402, 403, 404) includes a light source (675) configured to generate light energy, a transmitter fiber (130; 230; 330; 622) configured to receive the light energy from the light source and to project light energy out of a projecting end of the transmitter fiber over a transmitter fiber field of view (232; 432), and a plurality of receiver fibers (120, 121, 122, 123; 220, 221). Each of the plurality of receiver fibers has a receiving end aligned proximate and substantially parallel to the projecting end of the transmitter fiber and is configured to receive a received portion of the projected light energy reflected from a target within a receiver field of view (240, 241; 422, 424). The multi-fiber optical sensor system also includes a lenslet array (180; 280; 380) configured to shape the transmitter fiber field of view and give the transmitter field of view a finite cross-sectional area. The lenslet array has a plurality of lens (188, 190, 191, 192, 193) corresponding to the transmitter fiber and each of the plurality of receiver fibers and is further configured to shape the receiver fiber field of view, tilt the center of the field of view with respect to the axis of the projected light energy for each of the plurality of receiver fibers and give the receiver fiber field of view for each of the plurality of receiver fibers a finite cross-sectional area. The multi-fiber optical sensor system also includes a detector configured to detect the portion of the projected light energy received by each of the plurality of receiver fibers. The receiver fiber field of view for each of the plurality of receiver fibers crosses the transmitter fiber field of view between a first crossing point at a distance R min from a lens axis and a last crossing point at a distance R max from the lens axis. There is a center crossing point R mid at a point where a centerline of the receiver fiber field of view for each of the plurality of receiver fibers crosses a centerline of the transmitter fiber field of view. The range between R min and R max for each of the plurality of receiver fibers defines a detection zone (290, 291, 292, 293, 294, 295) such that each of the plurality of receiver fibers has a unique detection zone. Targets include a hard target and/or constituents of a cloud atmosphere.
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公开(公告)号：EP3907531A3
公开(公告)日：2022-03-02
申请号：EP21168420.4
申请日：2021-04-14
发明人： RAY, Mark , JACKSON, Darren G.
IPC分类号： G01S17/04 , G01S17/88 , G01S7/48 , G01S17/10 , G01S17/36 , G01S17/86 , F01D17/02 , F01D21/00
摘要： Apparatus and associated methods relate to a system for detecting foreign object debris ingested into an aircraft engine. The system detects such foreign object debris by projecting a beam of light over an inlet (18) of the aircraft engine (14). When foreign object debris is ingested into the aircraft engine, it intercepts the beam of light and scatters a back-scattered portion of the intercepted beam of light. An optical detector (24) is configured to detect the back-scattered portion of the intercepted beam of light. A processor is configured to determine whether foreign object debris is ingested by the aircraft engine based on a comparison of a threshold value with a signal indicative of the back-scattered portion generated by the optical detector.
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公开(公告)号：EP3351967A2
公开(公告)日：2018-07-25
申请号：EP18152834.0
申请日：2018-01-22
发明人： RAY, Mark , ANDERSON, Kaare Josef
CPC分类号： G01N15/0211 , B64D15/20 , G01N21/49 , G01N2015/0026 , G01S7/4811 , G01S7/4815 , G01S7/4818 , G01S17/95 , G01W1/00 , Y02A90/19
摘要： 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 (30) 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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公开(公告)号：EP3285090A3
公开(公告)日：2018-02-28
申请号：EP17186894.6
申请日：2017-08-18
IPC分类号： G01S17/95 , G01S7/481 , G01S7/483 , G01S13/86 , G01S13/95 , G01S7/02 , G01S7/28 , H01P1/161 , B64D15/20 , G01S7/499 , H01Q13/02
CPC分类号： G01S17/95 , B64D15/20 , G01S7/026 , G01S7/28 , G01S7/4818 , G01S7/483 , G01S7/499 , G01S13/865 , G01S13/953 , H01P1/161 , H01P1/173 , H01Q5/22 , H01Q13/02 , Y02A90/18 , Y02A90/19
摘要： Apparatus and associated methods relate to determining, based on a detected portion of a projected pulse of quasi-optical energy backscattered by water particles within a divergent projection volume of a cloud atmosphere, properties of the backscattering water particles. The pulse of quasi-optical energy is projected into the divergent projection volume of the cloud atmosphere (12). The divergent projection volume is defined by an axis of projection and an angle of projection about the axis of projection. The portion of the projected pulse of optical energy backscattered by water particles within the divergent projection volume of the cloud atmosphere is received and detected. Various properties of the backscattering water particles, which can be determined from the detected portion of the projected pulse backscattered by water particles can include particle density and/or particle size.
摘要翻译： 装置和相关方法涉及基于在云气氛的发散投影体积内由水粒子背散射的准光学能量的投影脉冲的检测部分来确定反向散射水粒子的性质。 准光能脉冲投射到云气氛（12）的发散投影体积中。 发散投影体积由投影轴线和围绕投影轴线的投影角度限定。 接收并检测在云气氛的发散投影体积内由水粒子背散射的投影光能脉冲部分。 可以从由水粒子反向散射的投影脉冲的检测部分确定的后向散射水粒子的各种性质可以包括粒子密度和/或粒度。
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公开(公告)号：EP3907531A2
公开(公告)日：2021-11-10
申请号：EP21168420.4
申请日：2021-04-14
发明人： RAY, Mark , JACKSON, Darren G.
摘要： Apparatus and associated methods relate to a system for detecting foreign object debris ingested into an aircraft engine. The system detects such foreign object debris by projecting a beam of light over an inlet (18) of the aircraft engine (14). When foreign object debris is ingested into the aircraft engine, it intercepts the beam of light and scatters a back-scattered portion of the intercepted beam of light. An optical detector (24) is configured to detect the back-scattered portion of the intercepted beam of light. A processor is configured to determine whether foreign object debris is ingested by the aircraft engine based on a comparison of a threshold value with a signal indicative of the back-scattered portion generated by the optical detector.
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