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High Altitude Lidar Observations of Marine Stratocumulus Clouds 海洋层积云的高空激光雷达观测
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.mc13
R. Boers, J. Spinhirne, W. Hart
{"title":"High Altitude Lidar Observations of Marine Stratocumulus Clouds","authors":"R. Boers, J. Spinhirne, W. Hart","doi":"10.1364/lors.1987.mc13","DOIUrl":"https://doi.org/10.1364/lors.1987.mc13","url":null,"abstract":"The present study describes the cloud top structure of an East Pacific marine stratocumulus cloud layer as observed from a downward-pointing lidar system aboard the NASA ER-2 aircraft. The lidar observations were coordinated with in situ observations of cloud parameters. These data are applied to study important statistical properties of the stratus clouds. The study of cloud top structures is highly relevant for detailed radiation budget calculations. Because large gradients in temperature and humidity exist near the cloud top, cloud top emmitted radiation varies significantly in the vertical. Precise knowledge of cloud top location allows for a precise determination of cloud top cooling and thus determines an important loss/gain in the atmospheric thermodynamic energy budget. Cloud top topography and periodic structures influence the solar reflectance and therefore the albedo of the clouds.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134512968","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
Experimental Observations of Line-Mixing In A Infrared CO2 Q-Branch 红外CO2 q -支线混合的实验观察
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.tuc19
B. Gentry, L. Strow
{"title":"Experimental Observations of Line-Mixing In A Infrared CO2 Q-Branch","authors":"B. Gentry, L. Strow","doi":"10.1364/lors.1987.tuc19","DOIUrl":"https://doi.org/10.1364/lors.1987.tuc19","url":null,"abstract":"The successful remote sensing of atmospheric temperature, humidity, pressure, and trace gas profiles depends upon a detailed knowledge of the radiative characteristics of atmospheric gases. For example, existing passive remote temperature and humidity sounders utilize infrared spectral channels that sense atmospheric CO2, N2O, O3, and H2O.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134445307","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
Instrumental and Atmospheric Considerations in the Development and Application of an Airborne/Spaceborne Water Vapor DIAL System 机载/星载水汽刻度盘系统开发和应用中的仪器和大气考虑
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.mc3
E. Browell, S. Ismail
{"title":"Instrumental and Atmospheric Considerations in the Development and Application of an Airborne/Spaceborne Water Vapor DIAL System","authors":"E. Browell, S. Ismail","doi":"10.1364/lors.1987.mc3","DOIUrl":"https://doi.org/10.1364/lors.1987.mc3","url":null,"abstract":"The Differential Absorption Lidar (DIAL) technique can be used to measure concentration profiles of many atmospheric gases1. Atmospheric water vapor (H2O) has been measured with the DIAL technique from ground-based2-4 and airborne systems5. In the DIAL technique, two laser wavelengths are transmitted near simultaneously, one \"on\" the peak of the H2O absorption line and another away from, or \"off\" the peak. In the range resolved DIAL measurement, H2O concentration between two ranges is calculated using the well known DIAL equation1, which is a function of the on and off signals at the two ranges and the effective H2O differential, absorption cross section. Random errors due to noise in the detected signal and systematic errors due to uncertainties in the knowledge of the effective cross section, Δσ, contribute to inaccuracy in the DIAL measurements. The development of a DIAL system must give full consideration to these two sources of error and any known systematic offsets can be at least partially compensated for in the DIAL data analysis phase. A brief discussion of these effects is given in this paper, and a more detailed description of these effects is given in Ismail and Browell6.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126795869","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
Progress in Solid-State Lasers for Spaceborne Lidars 星载激光雷达固态激光器研究进展
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1987-04-26 DOI: 10.1364/ASSL.1987.MA3
F. Allario
{"title":"Progress in Solid-State Lasers for Spaceborne Lidars","authors":"F. Allario","doi":"10.1364/ASSL.1987.MA3","DOIUrl":"https://doi.org/10.1364/ASSL.1987.MA3","url":null,"abstract":"As part of the National Aeronautics and Space Administration's (NASA) Space Station program, a lidar facility is being planned to conduct a series of scientific experiments from a polar orbiting platform. The thrust of these experiments is to improve our understanding of atmospheric chemistry and dynamics, altimetry, and meteorology. A number of scientific experiments were recently developed by a panel of scientists and lidar technologists and included both atmospheric backscatter (Lidar) and Differential Absorption and Lidar (DIAL) experiments. The major investigations to be conducted include measurements of the vertical profiles of atmospheric aerosols, the height of the Planetary Boundary Layer (PBL), the distribution of cirrus clouds, vertical profiles of water vapor in the lower and upper atmosphere, vertical profiles of ozone, and measurements of the vertical profiles of pressure and temperature. These experiments were developed by the Lidar Atmospheric Sounder and Altimetry (LASA) panel, and have been summarized in a NASA document.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"517 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123099167","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
Time Resolved Lidar Fluorosensor for Oil Pollution Detection 用于油污检测的时间分辨激光雷达荧光传感器
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1986-08-01 DOI: 10.1364/lors.1987.tub3
A. Ferrario, P. Pizzolati, E. Zanzottera
{"title":"Time Resolved Lidar Fluorosensor for Oil Pollution Detection","authors":"A. Ferrario, P. Pizzolati, E. Zanzottera","doi":"10.1364/lors.1987.tub3","DOIUrl":"https://doi.org/10.1364/lors.1987.tub3","url":null,"abstract":"This work is based on a preliminary experimental research made by researchers of JRC-Ispra1 according to which an airborne fluorosensor system, able to jointly perform a time and spectral analysis of oil fluorescence, is useful for the detection and the characterisation of oil spills on the sea surface. They have demonstrated that while spectral analysis alone can hardly enable to distinguish between two oils of the same class (for example two crude oils), the time-spectral analysis can easily discriminate between two oils with nearly the same spectral pattern.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127822986","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
Low-Pressure Gain-Cell Laser-Detector Operation with A CO2 Transversely Excited Atmospheric (Tea) Laser 使用CO2横向激发大气(Tea)激光器的低压增益池激光探测器
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc4
J. E. van der Laan
{"title":"Low-Pressure Gain-Cell Laser-Detector Operation with A CO2 Transversely Excited Atmospheric (Tea) Laser","authors":"J. E. van der Laan","doi":"10.1364/lors.1987.wc4","DOIUrl":"https://doi.org/10.1364/lors.1987.wc4","url":null,"abstract":"The recent development of a low-pressure CO2 gain-cell1 preamplifier for optical receivers has stimulated renewed interest in the technique in the lidar community. Early work in this area2 indicated that a gain factor of only 2.5 could be achieved using a 72-cm long gain cell. Because low gain did not appear to justify the added cost and complexity to a lidar system, interest in the technique decreased.","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":"115748655","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
Laser-Excited Optical Filter: Experiments In Rb Vapor 激光激发光学滤光片:Rb蒸气中的实验
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wb4
T. Shay, J. D. Dobbins, Y. Chung
{"title":"Laser-Excited Optical Filter: Experiments In Rb Vapor","authors":"T. Shay, J. D. Dobbins, Y. Chung","doi":"10.1364/lors.1987.wb4","DOIUrl":"https://doi.org/10.1364/lors.1987.wb4","url":null,"abstract":"Narrow bandwidth optical sources are readily available; however, tunable narrow-bandwidth, wide field-of-view optical filters are not available. Laser-excited optical filters (LEOFs) are in principle, tunable narrow-bandwidth, wide field-of-view optical filters. LEOFs can simultaneously provide high resolution (0.001 nm), wide field of-view (2π), and high quantum efficiency. These devices are ideally suited for extracting weak narrow bandwidth signals buried in strong nonresonant optical background radiation. Potential applications of these filters include remote sensing, laser communications, laser radar, detection of Raman radiation, atomic spectroscopy, etc.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"37 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":"116656870","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
Pulsed Frequency Stable Narrow Linewidth Lasers and Optical Remote Sensing 脉冲稳频窄线宽激光器与光学遥感
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.wc7
K.K. Lee
{"title":"Pulsed Frequency Stable Narrow Linewidth Lasers and Optical Remote Sensing","authors":"K.K. Lee","doi":"10.1364/lors.1987.wc7","DOIUrl":"https://doi.org/10.1364/lors.1987.wc7","url":null,"abstract":"Usually people consider single mode pulsed lasers to be frequency stablized. But in a pulsed laser, mode selection is not equivalent to frequency stablization. This is because with any type of mode selection method or device, a long term frequency drift may occur from pulse to pulse due to thermal or mechanical disturbances of the cavity length. Furthermore, short term frequency drift (chirping) may occur within one pulse due to rapid refractive index variations of the active gain medium.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"4 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":"126052698","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
FLIDAR-2 a Compact Lidar Fluorosensor and Spectrometer FLIDAR-2紧凑型激光雷达荧光传感器和光谱仪
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.mc18
F. Castagnoli, G. Cecchi, L. Pantani, B. Radicati
{"title":"FLIDAR-2 a Compact Lidar Fluorosensor and Spectrometer","authors":"F. Castagnoli, G. Cecchi, L. Pantani, B. Radicati","doi":"10.1364/lors.1987.mc18","DOIUrl":"https://doi.org/10.1364/lors.1987.mc18","url":null,"abstract":"The FLIDAR-2 is the result of the researches carried out at IROE-CNR on the remote sensing of the environment by lidar fluorosensors and passive optical sensors.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"502 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":"123418834","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
Aerosols and Humidity Profiles Recorded Using the Alexandrite Laser: Preliminary Results and System Tests 使用亚历山大变石激光记录的气溶胶和湿度剖面:初步结果和系统测试
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1900-01-01 DOI: 10.1364/lors.1987.mc20
C. Cahen
{"title":"Aerosols and Humidity Profiles Recorded Using the Alexandrite Laser: Preliminary Results and System Tests","authors":"C. Cahen","doi":"10.1364/lors.1987.mc20","DOIUrl":"https://doi.org/10.1364/lors.1987.mc20","url":null,"abstract":"Since 1983 we were developing fully mobile new DIAL system to monitor the major meteorological parameters (humidity, temperature, aerosols) using the alexandrite laser as the transmitter.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"123 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":"114436070","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
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