公开(公告)号：EP2529205B1

公开(公告)日：2018-06-20

申请号：EP11704291.1

申请日：2011-01-24

申请人： Qinetiq Limited

发明人： HUSSAIN, Shahid ,  FIXTER, Greg, Peter, Wade ,  SZWARNOWSKI, Stefan

IPC分类号： G01N22/00 ,  G01S7/41 ,  G01N21/55

CPC分类号： G01N21/55 ,  G01N22/00 ,  G01S7/411

摘要： A method of measuring the reflectivity of a region of an article to electromagnetic radiation, in particular for the characterisation of the radio-frequency (RF) properties of wind turbine blades. The article is arranged in the near-field of a transceiver antenna, which performs both illumination and measurement of reflected radiation from the region of the article undergoing measurement. The method is beneficial in that it can be used with an antenna in close proximity (or in contact) to the article to be measured, for example for use in on site measurement of specific regions of a turbine blade.

公开(公告)号：EP1644754B1

公开(公告)日：2018-06-13

申请号：EP04743247.1

申请日：2004-07-05

申请人： QinetiQ Limited

发明人： MACLEOD, Malcolm David, QinetiQ Malvern

IPC分类号： G01S3/04 ,  G01S3/14

CPC分类号： G01S3/043 ,  G01S3/14 ,  G01S3/46 ,  G01S3/74

摘要： Direction findings by radio comprises arraigning an array of antennas, to receive signals from emitters, selecting individual antenna signals using a first multipole switch and determining, antenna signal strengths. Individual antenna signals are also selected by mutipole switch, which routes a selected signal to a third multipole switch. The third switch switches a phase shifter into and out of an antenna signal path. An adder is employed to add an antenna signal in a first signal path extending via the first multipole switch to a different antenna signal in a second signal path extending via the second and third switches. This determines combined signal strengths between pairs of antenna signals, one of which either has or has not been relatively phase shifted depending on the third switch position. Covariance matrix elements are determined from signal strengths enabling emitter bearings to be derived.

公开(公告)号：EP1861737B1

公开(公告)日：2018-02-28

申请号：EP06726482.0

申请日：2006-03-23

申请人： QinetiQ Limited

发明人： BENNETT, Charlotte, Rachel, Helen, QinetiQ Limited ,  SHEPHERD, Terence, John, QinetiQ Limited ,  MICHAILLE, Laurent, QinetiQ Limited ,  TAYLOR, David, Maurice, QinetiQ Limited

IPC分类号： G02B6/024 ,  C03B37/012 ,  G02B6/02 ,  C03B37/027

CPC分类号： C03B37/01222 ,  C03B37/0122 ,  C03B37/02781 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/18 ,  C03B2203/34 ,  C03B2203/42 ,  G02B6/02042 ,  G02B6/02333 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02371 ,  G02B6/02376 ,  G02B6/024

摘要： A multicore optical fibre includes a microstructured cladding material formed from a plurality of cladding elements arranged in an array and each cladding element comprising at least two different materials each having different refractive indices, and a plurality of core elements formed within interstitial regions between adjacent cladding elements. A fibre so formed may have a large number of cores per unit cross-sectional area as compared with prior art fibres, and thus allows the fibre to have relatively short distances between adjacent cores for a given required inter-core isolation. A fibre so formed has utility in many areas requiring high core density, such as inter-chip optical communication, or optical communication between circuit boards.

公开(公告)号：EP2503932B1

公开(公告)日：2018-01-24

申请号：EP10787868.8

申请日：2010-11-25

申请人： Qinetiq Limited

发明人： DURNELL, Laurence ,  JARRETT, Donald, Nigel

IPC分类号： A61B3/00 ,  A61B3/113 ,  G06K9/00 ,  G06F3/01

CPC分类号： A61B3/113 ,  G06F3/013 ,  G06K9/00604

摘要： An eye tracking apparatus and method of eye monitoring, comprising a target display adapted to project a moveable image of a target into a user's field of vision, an illumination source adapted to project a reference point onto a user's eye, a sensor adapted to monitor a user's eye, and a processor adapted to determine the position of a feature of a user's eye relative to the reference point, wherein the apparatus is arranged such that said determined position provides a direct indication of eye direction relative to the target direction.

公开(公告)号：EP2496832B1

公开(公告)日：2016-01-27

申请号：EP10781724.9

申请日：2010-11-01

申请人： QinetiQ Limited

发明人： FIXTER, Greg Peter Wade ,  SPOONER, Christopher Douglas James ,  PERRY, Christopher James

IPC分类号： F03D1/06 ,  H01Q17/00

CPC分类号： F03D1/065 ,  F05B2230/31 ,  F05B2260/99 ,  F05B2280/6003 ,  F05C2253/04 ,  H01Q17/00 ,  Y02E10/721 ,  Y02P70/523 ,  Y10T29/49337

公开(公告)号：EP2676004A1

公开(公告)日：2013-12-25

申请号：EP12709956.2

申请日：2012-02-13

申请人： Qinetiq Limited ,  The Secretary of State for Business Innovation & Skills

发明人： HORTON, Thomas John ,  MANNING, Paul Antony

IPC分类号： F01D21/04 ,  G01B7/02

CPC分类号： G01B7/14 ,  F01D17/02 ,  F01D21/04 ,  F05D2270/80 ,  F05D2270/821 ,  G01B7/023

摘要： A sensor system includes a sensor and processing means adapted to process the signals from the sensor, and to provide a distance measurement or estimate from the sensor to a metallic object of interest, such as a turbine blade. The sensor, typically an eddy current sensor, provides a signal to which the processing means fits a curve, and parameters including pulse width and height are taken from the fitted curve and used in calculating the distance measurement or estimate. Look-up tables may be used to produce the measurement or estimate. Average values of the parameters may calculated to reduce random noise effects and may be subsequently used to produce correction factors to correct instantaneous measurements.

公开(公告)号：EP2529205A1

公开(公告)日：2012-12-05

申请号：EP11704291.1

申请日：2011-01-24

申请人： Qinetiq Limited

发明人： HUSSAIN, Shahid ,  FIXTER, Greg, Peter, Wade ,  SZWARNOWSKI, Stefan

IPC分类号： G01N22/00

CPC分类号： G01N21/55 ,  G01N22/00 ,  G01S7/411

摘要： A method of measuring the reflectivity of a region of an article to electromagnetic radiation, in particular for the characterisation of the radio-frequency (RF) properties of wind turbine blades. The article is arranged in the near-field of a transceiver antenna, which performs both illumination and measurement of reflected radiation from the region of the article undergoing measurement. The method is beneficial in that it can be used with an antenna in close proximity (or in contact) to the article to be measured, for example for use in on site measurement of specific regions of a turbine blade.

公开(公告)号：EP1485969B1

公开(公告)日：2010-06-09

申请号：EP03712320.5

申请日：2003-03-07

申请人： QinetiQ Limited

发明人： FLETCHER, Paul, c/o QinetiQ Limited ,  DEAN, Michael, c/o QinetiQ Limited

IPC分类号： H01Q3/26 ,  H04B7/08

CPC分类号： H04B7/0848 ,  H01Q3/2605 ,  H04B7/0822

公开(公告)号：EP1864154B1

公开(公告)日：2010-02-17

申请号：EP06710099.0

申请日：2006-03-16

申请人： QinetiQ Limited

发明人： Beasley, Patrick David Lawrence c/o QinetiQ Limited

IPC分类号： G01S7/35 ,  G01S7/40 ,  G01S13/34

CPC分类号： G01S7/4056 ,  G01S7/354 ,  G01S13/343 ,  G01S2007/356 ,  G01S2007/358

公开(公告)号：EP2005211A1

公开(公告)日：2008-12-24

申请号：EP07732084.4

申请日：2007-03-19

申请人： QinetiQ Limited

发明人： JAHANGIR, Mohammed

IPC分类号： G01S13/90 ,  G01S15/89

CPC分类号： G01S13/9029 ,  G01S15/8904

摘要： A method of processing a temporal sequence of base images from a synthetic aperture system such as a synthetic aperture radar is provided that simplifies the task of identifying moving objects. The method comprises the steps of firstly temporally filtering a plurality of the base images to form a reference image, and secondly normalising the reference image with a base image to form a change detection image. The change detection image has the property that all moving objects are emphasised. Further processing can optionally be performed on the change detection image to remove false targets based on characteristics of the highlighted areas or on a temporal track taken over a plurality of change detection images. The invention allows detection of moving objects without requiring a Doppler return from a target. The invention extends to a system adapted to implement the method, and a computer program.