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Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques最新文献

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Remote Temperature Distribution Sensing Along Optical Fibers 光纤温度分布遥感
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.tub2
A. Hartog
{"title":"Remote Temperature Distribution Sensing Along Optical Fibers","authors":"A. Hartog","doi":"10.1364/lors.1987.tub2","DOIUrl":"https://doi.org/10.1364/lors.1987.tub2","url":null,"abstract":"The use of optical fibres as transducers is currently the subject of active research justified by the promise of sensors able to offer high accuracy and measurement bandwidth, small size and immunity from interference even over long transmission paths. However, single point sensors only seldom utilise the very high intrinsic bandwidth of the optical fibre transmission medium. The need has therefore emerged to multiplex a number of sensing elements onto a single fibre or fibre pair and thus to form a sensor network distributed in space. This paper reviews recent progress in a particular class of distributed fibre optic sensors, based on the principle of optical reflectometry, which has considerable similarity to some of the LIDAR measurements reported in the literature.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127423470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effective Source of Coherent Radiation Based on CO2 Lasers and ZnGeP2 Frequency Converters 基于CO2激光器和ZnGeP2变频器的有效相干辐射源
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc13
Y. Andreev, V. Voevodin, P. Geiko, A. Gribenyukov, V. Zuev, V. Zuev
{"title":"Effective Source of Coherent Radiation Based on CO2 Lasers and ZnGeP2 Frequency Converters","authors":"Y. Andreev, V. Voevodin, P. Geiko, A. Gribenyukov, V. Zuev, V. Zuev","doi":"10.1364/lors.1987.wc13","DOIUrl":"https://doi.org/10.1364/lors.1987.wc13","url":null,"abstract":"The ZnGeP2 monocrystals have high nonlinear figure of merit, third after Te and CdGeAs2. ZnGeP2 is sufficiently birefringent (B = + 0.04) for three-frequency matching mixing practically all over the transmission range. However, mainly due to low optical transmission of the monocrystals available, the experimental studies of frequency converters (FC) have been limited until recently to approbation of the CO2 laser radiation up-[1] and downconverters [2].","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116272263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0.53 µm Incoherent Doppler Lidar: Current Status 0.53µm非相干多普勒激光雷达:当前状态
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc19
J. Sroga, A. Rosenberg
{"title":"0.53 µm Incoherent Doppler Lidar: Current Status","authors":"J. Sroga, A. Rosenberg","doi":"10.1364/lors.1987.wc19","DOIUrl":"https://doi.org/10.1364/lors.1987.wc19","url":null,"abstract":"Measurements of the atmospheric wind field have been shown by simulations to improve global numerical weather prediction (Atlas, et al., 1985) and several spaceborne lidar systems have been proposed to meet the global wind measurement requirements. Menzies (1986) has given a comparison of the relative performance of four potential spaceborne Doppler lidar systems utilizing either coherent (heterodyne) detection at 1.06 µm and 9-11 µm wavelengths or incoherent (direct) detection at 0.35 µm and 0.53 µm wavelengths. This paper describes a ground based, 0.53 µm incoherent Doppler lidar and presents preliminary results of atmospheric testing to demonstrate this incoherent Doppler lidar technique.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116449492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of laser Doppler anemometer results by simultaneous backscatter measurements 激光多普勒风速仪同时后向散射测量结果的改进
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.mc8
F. Köpp
{"title":"Improvement of laser Doppler anemometer results by simultaneous backscatter measurements","authors":"F. Köpp","doi":"10.1364/lors.1987.mc8","DOIUrl":"https://doi.org/10.1364/lors.1987.mc8","url":null,"abstract":"Infrared Doppler lidar systems have proven very efficient for remote measurements of atmospheric wind and turbulence. During the last five years the cw CO2 laser Doppler anemometer (LDA) from DFVLR has been successfully used for different routine applications, for example, the measurement of vertical wind profiles up to 750 m altitude or wind profiles close to the sea surface. Another type of applications covers the investigation of turbulence structures, especially the detection and tracking of aircraft wake vortices. Despite all the accurate results gained during these and additional field experiments, some difficulties became evident which can influence the LDA measurements in unfavourable cases. One of those cases is the presence of strongly scattering layers like fog or low clouds within or nearby the sensing volume. This paper describes the possibilities which arise by simultaneous measurements of aerosol profiles and cloud heights using a backscatter lidar and a ceilometer.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130596930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Signal Requirements for Remote IR Limb Sounding of Atomic Oxygen and Temperature in the Thermosphere 热层原子氧和温度遥感红外肢体探测信号要求
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.tuc10
R. Sharma, A. Zachor
{"title":"Signal Requirements for Remote IR Limb Sounding of Atomic Oxygen and Temperature in the Thermosphere","authors":"R. Sharma, A. Zachor","doi":"10.1364/lors.1987.tuc10","DOIUrl":"https://doi.org/10.1364/lors.1987.tuc10","url":null,"abstract":"Atomic oxygen plays an important role in chemical and collisional processes in the earth's mesosphere and thermosphere. Current techniques, both in situ and remote, for measuring oxygen atom densities in this altitude regime have produced results with unexplained large disparities. We are investigating the feasibility of an approach wherein vertical profiles of translational temperature and oxygen atom density are recovered from measurements of the earth’s limb radiance profile near 147 micrometers and/or 63 micrometers wavelength, corresponding to the OI (3P0-3P1 and 3P1-3P2) transitions of the ground electronic state of atomic oxygen. The assumption that the 3P fine structure levels are in thermodynamic equilibrium (LTE) with the local translational temperature is crucial to the proposed technique, but seems a reasonable one based on the very long radiative lifetimes of the level transitions.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114419646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Information Content of Multifrequency Laser Sounding of Aerosol and Molecular Atmosphere 气溶胶和分子大气多频激光探测信息含量分析
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.mc1
V. Zuev, S. I. Kavkyanov, G. Krekov
{"title":"Analysis of Information Content of Multifrequency Laser Sounding of Aerosol and Molecular Atmosphere","authors":"V. Zuev, S. I. Kavkyanov, G. Krekov","doi":"10.1364/lors.1987.mc1","DOIUrl":"https://doi.org/10.1364/lors.1987.mc1","url":null,"abstract":"The use of a single-frequency lidar for investigating the space-time structure of atmospheric aerosol has a limited field of application due to a possible ambiguity of interpreting the experimental data [1-3]. This paper considers the potentialities of spectral measurements for obtaining more complete data on the aerosol profiles.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115864913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Leandre Project : A French Airborne Lidar System For Meteorological Studies Leandre项目:用于气象研究的法国机载激光雷达系统
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.thb1
J. Pelon
{"title":"The Leandre Project : A French Airborne Lidar System For Meteorological Studies","authors":"J. Pelon","doi":"10.1364/lors.1987.thb1","DOIUrl":"https://doi.org/10.1364/lors.1987.thb1","url":null,"abstract":"An airborne lidar system for meteorological studies is beeing developed in France by the CNRS (Service d'Aéronomie, Laboratoire de Météorologie Dynamique -J. Pelon and P. Flamant principal investigators-, and Institut National des Sciences de 1'Univers -M. Bourdet project manager-) and the CNES. It will be implemented on board the French Research Airplane, a Fokker F27, which will be also instrumented with numerous in situ sensors.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"32 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134521991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Overview of an Advanced Lidar for an Atmospheric Temperature Profile Measurements Program 一个先进的激光雷达概述大气温度剖面测量程序
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc17
B. Johnson, C. Korb, P. Flamant, M. Bourdet, J. Degnan, G. Mégie, S. Melfi, G. Schwemmer, L. Uccellini
{"title":"Overview of an Advanced Lidar for an Atmospheric Temperature Profile Measurements Program","authors":"B. Johnson, C. Korb, P. Flamant, M. Bourdet, J. Degnan, G. Mégie, S. Melfi, G. Schwemmer, L. Uccellini","doi":"10.1364/lors.1987.wc17","DOIUrl":"https://doi.org/10.1364/lors.1987.wc17","url":null,"abstract":"The LASE (Laser Atmospheric Sensing Experiment) program is managed by the NASA Langley Research Center (LaRC) and is the development of a modular lidar facility which can be operated autonomously from the high altitude (60,000 feet) NASA ER-2 aircraft. Phase I of this program is the development of a lidar instrument system by LaRC to measure atmospheric water vapor profiles. Phase II (also refered to as LASE II) is the development by the NASA Goddard Space Flight Center (GSFC), in cooperation with the Centre National d'Etudes Spatiales of France, of an advanced lidar instrument system to measure temperature and pressure profiles of the earth's atmosphere. GSFC is developing the solid state (Alexandrite) laser transmitters for both phase I and phase II.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131966390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Remote Determination of Meteorological and Optical Parameters of the Atmosphere Using a Raman Lidar 利用拉曼激光雷达远程测定大气气象和光学参数
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.mc2
Y. Arshinov, S. Bobrovnikov, S. Volkov, V. Zuev, V. K. Shumskii
{"title":"Remote Determination of Meteorological and Optical Parameters of the Atmosphere Using a Raman Lidar","authors":"Y. Arshinov, S. Bobrovnikov, S. Volkov, V. Zuev, V. K. Shumskii","doi":"10.1364/lors.1987.mc2","DOIUrl":"https://doi.org/10.1364/lors.1987.mc2","url":null,"abstract":"As known, the boundary atmospheric layer is just the region between the Earth’s surface and the free atmosphere where most dynamic processes take place. The investigation of these processes is very important for obtaining the information on the conditions of temperature inversions formation as well as on the diffusion of various atmospheric components including pollutions. It is also important for studying the heat transfer from the ground to the atmosphere.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123417162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plans for an Airborne Multispectral Laser Imaging Polarimeter System 机载多光谱激光成像偏振计系统方案
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc15
J. Kalshoven
{"title":"Plans for an Airborne Multispectral Laser Imaging Polarimeter System","authors":"J. Kalshoven","doi":"10.1364/lors.1987.wc15","DOIUrl":"https://doi.org/10.1364/lors.1987.wc15","url":null,"abstract":"There has been difficulty in making effective use of the natural depolarization properties of the Earth’s surface as a parameter in land remote sensing. This arises from the problem in building a theoretical foundation upon which to interpret the data from reflected polarized solar radiation which is complicated by atmospheric effects and a diversity of viewing and phase angles. By designing an experiment that substantially eliminates the atmospheric and phase angle effects, a data base could be developed upon which theoretical models could be verified, refined, and predictions made. This is the goal of an airborne imaging polarimeter system being planned at NASA Goddard Space Flight Center.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114968265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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