KR20100097487A - 라이다를 이용한 황사 판독방법 - Google Patents
라이다를 이용한 황사 판독방법 Download PDFInfo
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- KR20100097487A KR20100097487A KR1020090016450A KR20090016450A KR20100097487A KR 20100097487 A KR20100097487 A KR 20100097487A KR 1020090016450 A KR1020090016450 A KR 1020090016450A KR 20090016450 A KR20090016450 A KR 20090016450A KR 20100097487 A KR20100097487 A KR 20100097487A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/08—Adaptations of balloons, missiles, or aircraft for meteorological purposes; Radiosondes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims (5)
- 라이다(Light Detection and Ranging)를 통해 대기중에 레이저 광을 연직으로 발사하여 그 라이다의 수신부(망원경)로 모여진 후방산란광의 강도 및 레이저 광 복귀시간을 측정하는 측정단계와;상기 후방산란광의 강도 및 레이저 광 복귀시간을 통해 에어로솔 소산계수 및 편광소멸도를 산출하는 산출단계와;상기 에어로솔 소산계수 및 편광소멸도를 통해 황사발생 여부와 황사의 분포고도 및 강도를 판독하는 판독단계;로 구성되는 것을 특징으로 하는 라이다를 이용한 황사 판독방법.
- 청구항 1에 있어서,상기 산출단계에서는 고도 6~10km 구간 중 라이다 신호가 최소인 구간을 특이고도(Zm)로 결정한 다음으로, 동일한 시각에 스카이레디오미터로부터 관측된 광학두께(τ sky )가 존재하지 않는 경우, 소산과 후방산란계수의 비(S)를 가장 최근의 S 값으로 설정하고 특이고도(Zm)에서의 에어로솔 후방산란계수(βp)를 0으로 설정하여 에어로솔 후방산란계수 및 소산계수의 연직분포를 측정하는 것을 특징으로 하는 라이다를 이용한 황사 판독방법.
- 청구항 2에 있어서,동일한 시각에 상기 스카이레디오미터로부터 관측된 광학두께(τ sky )가 존재하는 경우, 소산과 후방산란계수의 비(S)를 최초 1로 가정하고 특이고도(Zm)에서의 에어로솔 후방산란계수(βp)를 0으로 설정하여 라이다를 통해 측정된 값으로 에어로솔 후방산란계수의 연직분포를 측정한 다음에 에어로솔 광학두께(τ lidar )를 구하여 상기 스카이레디오미터의 관측 광학두께(τ sky )와 비교함으로써 소산과 후방산란계수의 보정값(S=S/ε)을 통해 ε=(τ lidar )/(τ sky )인 ε가 0.995<ε<1.005 에 있을 때의 S로부터 에어로솔 후방산란계수 및 소산계수의 연직분포를 측정하는 것을 특징으로 하는 라이다를 이용한 황사 판독방법.
- 청구항 2에 있어서,상기 산출단계에서는 상기 라이다의 라만 채널과 탄성 채널을 동시에 이용하여 에어로솔 소산계수를 산출하는 것을 특징으로 하는 라이다를 이용한 황사 판독방법.
- 청구항 4에 있어서,상기 판독단계에서는 에어로솔 소산계수가 0.2 내지 2km-1 범위에 있고 편광 소멸도가 0.15보다 크면 황사로 판단하는 것을 특징으로 하는 라이다를 이용한 황사 판독방법.
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KR101156660B1 (ko) * | 2011-12-28 | 2012-06-14 | 서울대학교산학협력단 | 라이다의 편광소멸도와 파장신호비를 이용한 황사판독 방법. |
CN105487083A (zh) * | 2015-12-01 | 2016-04-13 | 中国科学院上海技术物理研究所 | 一种多光谱影像气溶胶像元气溶胶厚度的检测与提取方法 |
CN105891064A (zh) * | 2016-04-05 | 2016-08-24 | 山东大学 | 一种非球形气溶胶粒子混合率的检测方法及其装置 |
CN105974433A (zh) * | 2016-05-05 | 2016-09-28 | 中国人民解放军陆军军官学院 | 基于连续激光的近地面层气溶胶后向散射系数廓线的探测方法 |
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JP2004053357A (ja) * | 2002-07-18 | 2004-02-19 | Shimadzu Corp | 黄砂粒子の捕集方法および測定方法 |
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Cited By (7)
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KR101156660B1 (ko) * | 2011-12-28 | 2012-06-14 | 서울대학교산학협력단 | 라이다의 편광소멸도와 파장신호비를 이용한 황사판독 방법. |
CN105487083A (zh) * | 2015-12-01 | 2016-04-13 | 中国科学院上海技术物理研究所 | 一种多光谱影像气溶胶像元气溶胶厚度的检测与提取方法 |
CN105891064A (zh) * | 2016-04-05 | 2016-08-24 | 山东大学 | 一种非球形气溶胶粒子混合率的检测方法及其装置 |
CN105974433A (zh) * | 2016-05-05 | 2016-09-28 | 中国人民解放军陆军军官学院 | 基于连续激光的近地面层气溶胶后向散射系数廓线的探测方法 |
CN113009437A (zh) * | 2021-03-03 | 2021-06-22 | 云南大学 | 一种根据实时气溶胶分布求解激光雷达动态雷达比的方法 |
CN113009437B (zh) * | 2021-03-03 | 2023-10-03 | 云南大学 | 一种根据实时气溶胶分布求解激光雷达动态雷达比的方法 |
CN113777579A (zh) * | 2021-08-24 | 2021-12-10 | 万合(洛阳)光电技术有限公司 | 一种拉曼-米散射激光雷达气溶胶消光系数廓线反演算法 |
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