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公开(公告)号：US10175346B2
公开(公告)日：2019-01-08
申请号：US15572758
申请日：2015-05-12
摘要： A wind velocity searching unit 30 is configured so as to, when a spectrum signal calculated by a spectrum calculating unit 22 is one in a range bin having a signal strength less than a first threshold Th1, determine a search center IF of the search scope for a Doppler frequency corresponding to a wind velocity in the range bin by using a wind velocity model selected by a wind velocity model selecting unit 29, and search for the wind velocity in the range bin from the spectrum signal within the search scope whose search center IF is determined thereby. As a result, the probability that the peak of noise is detected erroneously as the peak of the spectrum signal is reduced.
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公开(公告)号：US20190003455A1
公开(公告)日：2019-01-03
申请号：US15637213
申请日：2017-06-29
摘要： A method for detecting a shadow condition from a wind turbine and a system for detecting a shadow condition are provided. An atmospheric condition detected from an atmospheric condition detector is compared to a threshold. From the comparison a determination is made that the atmospheric condition is shadow producing. The shadow condition is detected using said determination.
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公开(公告)号：US10094928B2
公开(公告)日：2018-10-09
申请号：US15438717
申请日：2017-02-21
发明人： Damien Josset , Weilin Hou
摘要： Embodiments relate to characterizing underwater turbulence. Initially, multispectral laser light (MLL) is generated and then converted to output laser light (OLL). The OLL is received at a polarization rotator that causes the OLL to be emitted in one of multiple modes of polarization. Next, the OLL is directed toward a target medium, where the OLL causes backscattered light to be emitted from the target medium. While using the polarization rotator to switch between the multiple modes of polarization, Stokes parameters of the backscattered light are detected and then used to characterize the underwater turbulence of the target medium.
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公开(公告)号：US20180203158A1
公开(公告)日：2018-07-19
申请号：US15694750
申请日：2017-09-01
发明人： Christopher Ulmer , Dmitry Starodubov , Gregory Peng , Rodion Tikhoplav , David Miller , Andrew Kostrzewski , Koyiro Minakata , Gabriel Kaplan , Tomasz Jannson , Edward Patton , Sookwang Ro , Ihor Berezhnyy
CPC分类号： G01W1/02 , B64D1/08 , G01S7/003 , G01S7/4813 , G01S17/023 , G01S17/95 , G01W1/08 , G08B17/005 , G08B21/10 , G08B21/18 , Y02A90/19
摘要： A portable weather station, including an lower body portion; an upper body portion disposed on the lower body portion in a spaced apart relationship thereby forming an open channel between the upper body portion and the lower body portion; and a plurality of weather condition sensors wherein a first set of one or more of the plurality of weather condition sensors is mounted on the upper body portion of the portable weather station and a second set of one or more of the plurality of weather condition sensors is mounted on the lower body portion of the portable weather station.
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55.发明申请公开(公告)号：US20180188376A1
公开(公告)日：2018-07-05
申请号：US15600780
申请日：2017-05-21
申请人： Wuhan University
发明人： Fan YI , Miao WENG , Fuchao LIU , Yunpeng ZHANG , Changming YU , Yujin HE , Ying TAN , Yang YI , Xiangliang PAN
CPC分类号： G01S17/95 , G01S7/484 , G01S7/4861 , Y02A90/19
摘要： A single-line-extracted pure rotational Raman lidar system, including: a transmitter unit configured to emit extremely narrow-band laser light that is guided into atmosphere zenithward; a receiver unit configured to collect backscattered signals from the atmosphere; and a data acquisition and control unit configured to deliver data and guarantee automatic operation of the lidar system orderly. The transmitter unit employs a powerful injection-seeded Nd: YAG laser to emit 532.23 nm laser beam with a pulse energy of approximately 800 mJ, a repetition rate of 30 Hz and linewidth of
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公开(公告)号：US09971035B2
公开(公告)日：2018-05-15
申请号：US15022021
申请日：2013-10-11
摘要： A wind measurement lidar includes: an output unit to output a laser beam; a transmitter-receiver to emit the laser beam produced by the output unit into the air, and to receive a scattered beam of the laser beam; a received signal acquiring unit to obtain a received signal through heterodyne detection of the laser beam and the beam acquired via the transmitter-receiver; a controller to control the transmitter-receiver; a storage to store as a noise signal the received signal obtained when the laser beam is controlled so as to be produced, but not to be emitted into the air; a frequency difference unit to subtract the noise signal from the received signal obtained when the laser beam is controlled so as to be emitted into the air; and a wind speed measurer to measure a wind speed from the subtraction result.
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57.发明授权公开(公告)号：US09927456B2
公开(公告)日：2018-03-27
申请号：US14608962
申请日：2015-01-29
申请人： THALES
IPC分类号： G01P3/36 , G01P5/14 , G01P5/26 , G01P21/02 , G01S17/58 , G01S17/02 , G01S7/481 , G01P5/02 , G01S17/95
CPC分类号： G01P5/14 , G01P5/02 , G01P5/26 , G01P21/025 , G01S7/4813 , G01S17/023 , G01S17/58 , G01S17/95 , Y02A90/19
摘要： A probe system, mixed primary reference probe for an aircraft, associated aircraft and measuring method are disclosed. In one aspect, the probe system includes a base designed to be fastened on the cockpit of an aircraft, a plurality of regularly spaced static pressure taps, arranged through the base and designed to be connected to a pressure measurement device. The system includes at least one optical window transparent to laser radiation and inserted into the base.
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公开(公告)号：US09851444B2
公开(公告)日：2017-12-26
申请号：US14412359
申请日：2013-05-16
发明人： Nobuki Kotake , Shumpei Kameyama , Masaharu Imaki
摘要： A speed calculator 16 selects a speed calculation method corresponding to a peak value of an SNR which is detected by a peak SNR detector 15 from among a plurality of speed calculation methods of calculating the speed (wind speed) of an aerosol to calculate the speed (wind speed) of the aerosol according to the speed calculation method. As a result, there is provided an advantage of being able to calculate the speed (wind speed) of the aerosol in a short time with a high degree of accuracy.
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59.发明授权公开(公告)号：US09766262B2
公开(公告)日：2017-09-19
申请号：US14537683
申请日：2014-11-10
申请人： RAYTHEON COMPANY
发明人： Duane D. Smith
摘要： Method and apparatus for measuring a Doppler effect of a scattered light include: projecting an ultra violet (UV) light towards a target by a light emitter; receiving the UV light scatter from the target from the emitted UV light reflected from the target by a light receiver; measuring the frequency shift of the UV light scatter with respect to the emitted UV light to obtain distribution of line of sight velocity of macroscopic matters of the target corresponds to a Doppler shift; processing the distribution of the line of sight velocity to determine the Doppler effect of the UV light scatter; and separating the wind line of sight velocity as the centroid shift of the microscopic Doppler shift probability distribution.
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公开(公告)号：US09702975B2
公开(公告)日：2017-07-11
申请号：US14442052
申请日：2013-11-11
CPC分类号： G01S17/32 , G01S7/4818 , G01S17/58 , G01S17/95 , G01S2007/358 , Y02A90/19
摘要： The present invention relates to a lidar measurement system for the detection of the presence and/or motion of particles and/or objects in a space region remote from the lidar measurement system and comprising an interferometer arrangement, as well as to a corresponding method using such a measurement system. The interferometer arrangement comprises a continuous wave laser source (2), a photodetector arrangement (7), and optical components which are adapted to split light (23) emitted by the continuous wave laser source (2), to guide it along a first optical path constituting a measurement branch (4) and along a second optical path, which is separate from the first optical path and constitutes a reference branch (5), and to eventually have it incident in a spatially coherently superimposed manner onto the photodetector arrangement (7). The reference branch (5) has a predetermined optical path length, and the measurement branch (4) comprises a measurement portion (16), in which the light is directed away from the measurement system towards a space region remote from the measurement system and passes through the space region and light backscattered towards the measurement system by particles present in the space region is received again at the measurement system. Further, an evaluation unit (9) is provided which is coupled to the photodetector arrangement (7) and is adapted to receive the detector signal thereof and to determine from the detector signal the presence and/or movement of particles in the remote space region. The continuous wave laser source (2) has a coherence length in the range of 0.1 to 100 m.
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