JP2006510012A - 複数の出力波長を有するレーザレーダ装置 - Google Patents
複数の出力波長を有するレーザレーダ装置 Download PDFInfo
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- JP2006510012A JP2006510012A JP2004558769A JP2004558769A JP2006510012A JP 2006510012 A JP2006510012 A JP 2006510012A JP 2004558769 A JP2004558769 A JP 2004558769A JP 2004558769 A JP2004558769 A JP 2004558769A JP 2006510012 A JP2006510012 A JP 2006510012A
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1793—Remote sensing
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N2021/3513—Open path with an instrumental source
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/394—DIAL method
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/395—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers using a topographic target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/396—Type of laser source
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Abstract
Description
Claims (16)
- 単一の波長レーザ源を備える送信部と、前記単一の波長レーザ源の出力からの離散波長の少なくとも2つの成分光ビームを含む、組合わされた光ビームを生成する変換手段と、組合わされた光ビームを遠隔ターゲットに送る送信光学装置とを有する、コヒーレントレーザレーダ(ライダ)装置であって、組合わされた光ビームの各成分光ビームが、単一の波長レーザ源から送信光学装置へ同じ光学経路を移動する、装置。
- 受信部がさらに提供され、前記受信部が、遠隔ターゲットから戻った光を収集するための受信光学装置とコヒーレント検出手段とを備える、請求項1に記載の装置。
- 受信光学装置によって収集された各成分光ビームが、受信光学装置からコヒーレント検出手段へ同じ光学経路を移動する、請求項2に記載の装置。
- 変換手段が、電気光学変調器(EOM)を備える、請求項1から3のいずれか一項に記載の装置。
- EOMが、離散波長の少なくとも3つの成分光ビームを提供するために電気的に駆動される、請求項4に記載の装置。
- EOMが、離散波長の少なくとも5つの成分光ビームを提供するために電気的に駆動される、請求項4または5に記載の装置。
- 送信部が、偏光制御手段をさらに備える、請求項4から6のいずれか一項に記載の装置。
- 送信部が、少なくとも1つの光学増幅器をさらに備える、請求項1から7のいずれか一項に記載の装置。
- 周波数シフト手段が提供され、変換手段によって受信されたレーザビームと、該レーザビームに関連付けられるローカル発振器信号との間に周波数シフトをもたらす、請求項1から8のいずれか一項に記載の装置。
- 装置の光学構成要素の少なくともいくつかが、光ファイバケーブルを介して相互接続される、請求項1から9のいずれか一項に記載の装置。
- ローカル発振器ビームが、光ファイバ遅延ラインを介して送信部から受信部に結合される、請求項10に記載の装置。
- 別個の送信光学装置および受信光学装置が提供される、請求項1から11のいずれか一項に記載の装置。
- 少なくとも2つの成分光ビームのうちの1つの波長が、注目ガス種の吸収ピークに一致するように選択される、請求項1から12のいずれか一項に記載の装置。
- しきい値を下回る検出された戻り信号に応答して、少なくとも2つの成分光ビームのうちの1つ以上の波長を変更する手段をさらに備える、請求項13に記載の装置。
- 3つ以上の波長成分を含むビームを遠隔ターゲットに送信するように構成された単一のレーザ源を備える、ライダ装置。
- 電気光学変調器を備える、請求項15に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0228890.0A GB0228890D0 (en) | 2002-12-11 | 2002-12-11 | Laser radar apparatus |
PCT/GB2003/005215 WO2004053518A1 (en) | 2002-12-11 | 2003-12-03 | Laser radar apparatus having multiple output wavelenghts |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2006510012A true JP2006510012A (ja) | 2006-03-23 |
Family
ID=9949498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004558769A Pending JP2006510012A (ja) | 2002-12-11 | 2003-12-03 | 複数の出力波長を有するレーザレーダ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7349094B2 (ja) |
EP (1) | EP1570293B1 (ja) |
JP (1) | JP2006510012A (ja) |
AU (1) | AU2003288402A1 (ja) |
GB (1) | GB0228890D0 (ja) |
WO (1) | WO2004053518A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007333518A (ja) * | 2006-06-14 | 2007-12-27 | Mitsubishi Electric Corp | 差分吸収ライダ装置 |
KR101931022B1 (ko) * | 2017-08-29 | 2018-12-19 | 한양대학교 산학협력단 | 라이다 시스템 |
KR20230042155A (ko) * | 2020-06-30 | 2023-03-27 | 오로라 오퍼레이션스, 인크. | 펄스파 lidar용 시스템 및 방법 |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0220914D0 (en) * | 2002-09-10 | 2002-10-23 | Qinetiq Ltd | Lidar apparatus and method |
US7474685B2 (en) * | 2005-05-24 | 2009-01-06 | Itt Manufacturing Enterprises, Inc. | Multi-line tunable laser system |
GB0515605D0 (en) | 2005-07-29 | 2005-09-07 | Qinetiq Ltd | Laser measurement device and method |
JP4657956B2 (ja) * | 2006-03-14 | 2011-03-23 | 三菱電機株式会社 | 差分吸収ライダ装置 |
US8077294B1 (en) | 2008-01-17 | 2011-12-13 | Ball Aerospace & Technologies Corp. | Optical autocovariance lidar |
US8119971B2 (en) | 2008-01-17 | 2012-02-21 | Ball Corporation | Pulse data recorder in which a value held by a bit of a memory is determined by a state of a switch |
US7961301B2 (en) * | 2008-05-09 | 2011-06-14 | Ball Aerospace & Technologies Corp. | Flash LADAR system |
US9041915B2 (en) | 2008-05-09 | 2015-05-26 | Ball Aerospace & Technologies Corp. | Systems and methods of scene and action capture using imaging system incorporating 3D LIDAR |
US7929215B1 (en) | 2009-02-20 | 2011-04-19 | Ball Aerospace & Technologies Corp. | Field widening lens |
US8306273B1 (en) | 2009-12-28 | 2012-11-06 | Ball Aerospace & Technologies Corp. | Method and apparatus for LIDAR target identification and pose estimation |
US8736818B2 (en) | 2010-08-16 | 2014-05-27 | Ball Aerospace & Technologies Corp. | Electronically steered flash LIDAR |
US8744126B1 (en) | 2012-03-07 | 2014-06-03 | Ball Aerospace & Technologies Corp. | Morphology based hazard detection |
US20140241731A1 (en) * | 2013-02-28 | 2014-08-28 | Harris Corporation | System and method for free space optical communication beam acquisition |
US10545238B1 (en) | 2015-09-25 | 2020-01-28 | Apple Inc. | Combining laser pulse transmissions in LiDAR |
WO2017058901A1 (en) | 2015-09-28 | 2017-04-06 | Ball Aerospace & Technologies Corp. | Differential absorption lidar |
US10816649B1 (en) | 2017-09-14 | 2020-10-27 | The United States Of America As Represented By The Secretary Of The Air Force | Temporally multiplexed LADAR polarimeter |
US10921245B2 (en) | 2018-06-08 | 2021-02-16 | Ball Aerospace & Technologies Corp. | Method and systems for remote emission detection and rate determination |
US11353558B2 (en) | 2018-12-29 | 2022-06-07 | Gm Cruise Holdings Llc | Multiple laser, single resonator lidar |
CN109946710B (zh) * | 2019-03-29 | 2023-12-26 | 中国科学院上海技术物理研究所 | 一种双波长多偏振激光成像装置 |
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CN112285674B (zh) * | 2020-09-25 | 2022-11-11 | 中国科学院上海技术物理研究所 | 一种探测大气水汽的微脉冲差分吸收激光雷达的发射机 |
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Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4410992A (en) * | 1980-03-26 | 1983-10-18 | Laser Science, Inc. | Generation of pulsed laser radiation at a finely controlled frequency by transient regerative amplification |
JPH0315742A (ja) | 1989-03-23 | 1991-01-24 | Anritsu Corp | ガス検出装置 |
US5468961A (en) | 1991-10-08 | 1995-11-21 | Fisher & Paykel Limited | Infrared gas analyser and humidity sensor |
US5298964A (en) * | 1992-03-31 | 1994-03-29 | Geo-Center, Inc. | Optical stress sensing system with directional measurement capabilities |
US5644664A (en) * | 1994-06-10 | 1997-07-01 | The United States Of America As Represented By The Secretary Of The Navy | Fiber optic digital transmission system |
JP3636829B2 (ja) | 1996-06-20 | 2005-04-06 | 財団法人電力中央研究所 | 多波長光によるガス濃度計測方法 |
DE19641515A1 (de) | 1996-09-27 | 1998-04-09 | Elight Laser Syst Gmbh | Verfahren und Vorrichtung zur Detektion von Schadstoffen |
JP3825111B2 (ja) * | 1996-12-25 | 2006-09-20 | アークレイ株式会社 | 音響光学可変調フィルタの等価入射光角の決定方法 |
US5859611A (en) * | 1997-02-21 | 1999-01-12 | Hughes Electronics Corporation | Mixing and modulating methods and structures using nonlinear optical amplifiers |
GB2379846B (en) * | 2000-10-25 | 2003-08-27 | Toshiba Res Europ Ltd | Encoding,decoding and communication method and apparatus |
US7199924B1 (en) * | 2005-01-26 | 2007-04-03 | Aculight Corporation | Apparatus and method for spectral-beam combining of high-power fiber lasers |
-
2002
- 2002-12-11 GB GBGB0228890.0A patent/GB0228890D0/en not_active Ceased
-
2003
- 2003-12-03 AU AU2003288402A patent/AU2003288402A1/en not_active Abandoned
- 2003-12-03 WO PCT/GB2003/005215 patent/WO2004053518A1/en active Application Filing
- 2003-12-03 EP EP03780319.4A patent/EP1570293B1/en not_active Expired - Lifetime
- 2003-12-03 JP JP2004558769A patent/JP2006510012A/ja active Pending
- 2003-12-03 US US10/538,042 patent/US7349094B2/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007333518A (ja) * | 2006-06-14 | 2007-12-27 | Mitsubishi Electric Corp | 差分吸収ライダ装置 |
KR101931022B1 (ko) * | 2017-08-29 | 2018-12-19 | 한양대학교 산학협력단 | 라이다 시스템 |
KR20230042155A (ko) * | 2020-06-30 | 2023-03-27 | 오로라 오퍼레이션스, 인크. | 펄스파 lidar용 시스템 및 방법 |
KR102632106B1 (ko) * | 2020-06-30 | 2024-02-01 | 오로라 오퍼레이션스, 인크. | 펄스파 lidar용 시스템 및 방법 |
Also Published As
Publication number | Publication date |
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US20060114447A1 (en) | 2006-06-01 |
EP1570293A1 (en) | 2005-09-07 |
US7349094B2 (en) | 2008-03-25 |
AU2003288402A1 (en) | 2004-06-30 |
GB0228890D0 (en) | 2003-01-15 |
EP1570293B1 (en) | 2017-04-26 |
WO2004053518A1 (en) | 2004-06-24 |
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