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

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Tunable Waveguide CO2 Laser Local Oscillators for Spaceborne Infrared Heterodyne Spectrometers 用于星载红外外差光谱仪的可调谐波导CO2激光本振器
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.tuc21
J. Degnan, C. E. Rossey, H. E. Rowe, J. McGarry, U. Hochuli, P. Haldemann
{"title":"Tunable Waveguide CO2 Laser Local Oscillators for Spaceborne Infrared Heterodyne Spectrometers","authors":"J. Degnan, C. E. Rossey, H. E. Rowe, J. McGarry, U. Hochuli, P. Haldemann","doi":"10.1364/lors.1987.tuc21","DOIUrl":"https://doi.org/10.1364/lors.1987.tuc21","url":null,"abstract":"For over a decade, the technique of infrared heterodyne spectroscopy has provided sub-Doppler resolution spectra of planetary atmospheres from Earth-based telescope facilities. The goals of our current local oscillator development program are twofold: (1) to design, build, and demonstrate a totally automated, compact, space-qualifiable engineering model of an RF–excited CO2 laser local oscillator; and (2) to extend the lifetimes of such lasers to a degree where they can be seriously proposed for longterm near earth or planetary flight missions. The current status of these two research areas is discussed.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"26 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":"114875729","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
Performance Testing of the Shuttle Laser Altimeter 航天飞机激光高度计的性能测试
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.ma4
J. Bufton, J. Garvin
{"title":"Performance Testing of the Shuttle Laser Altimeter","authors":"J. Bufton, J. Garvin","doi":"10.1364/lors.1987.ma4","DOIUrl":"https://doi.org/10.1364/lors.1987.ma4","url":null,"abstract":"A laser ranging instrument has been developed for altimetry measurements of the Earth's surface along the nadir track of the Space Shuttle. The Shuttle Laser Altimeter is designed for transmission of a short laser pulse and reception of the backscattered laser radiation from the Earth's surface. The source laser is a Q-switched Nd:YAG operating at its fundamental wavelength of 1.064 μm. A reflector telescope and silicon avalanche photodiode are the basis of the altimeter receiver. Laser, telescope, detector, data processing and storage electronics, and dc power supplies are packaged for spaceflight into two adjacent Get-Away-Special canisters. This provides the basis for a very compact and low-cost interface to the Space Shuttle.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"31 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":"132181512","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: 3
Radiance Ratio Classification of Earth Surface Features—A Spaceborne Shuttle Experiment 地球表面特征的辐射比分类——航天飞机实验
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.tuc15
W. E. Sivertson
{"title":"Radiance Ratio Classification of Earth Surface Features—A Spaceborne Shuttle Experiment","authors":"W. E. Sivertson","doi":"10.1364/lors.1987.tuc15","DOIUrl":"https://doi.org/10.1364/lors.1987.tuc15","url":null,"abstract":"New spaceborne technology is being developed for autonomously detecting and classifying four primary Earth features—water, vegetation, and bare land, and a cloud-snow-ice class. Using this technology, a space-based remote imaging system could provide automatic pretransmission screening and selection of remotely sensed information. Classification is based on camera output radiance ratio values. The hardware is relatively small and could be operated in concert with other spaceborne sensors to remotely monitor Earth resources. This paper discusses the technology concept and spaceborne Shuttle test flight results.","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":"130742373","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
Atmospheric Correction Algorithm of Real and Simulated Space Imagery Using Radiative Transfer Code 基于辐射传输码的真实和模拟空间影像大气校正算法
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.tuc8
Hongsuk H. Kim
{"title":"Atmospheric Correction Algorithm of Real and Simulated Space Imagery Using Radiative Transfer Code","authors":"Hongsuk H. Kim","doi":"10.1364/lors.1987.tuc8","DOIUrl":"https://doi.org/10.1364/lors.1987.tuc8","url":null,"abstract":"An image processing algorithm which can be used not only to simulate satellite mulitispectral imagery but also to derive surface reflectance from satellite imagery is being developed. In essence, the algorithm is a pixel by pixel modelling of the atmospheric radiance which can be either added to a simulated ground scene or subtracted from space data.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"30 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":"121443863","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
An Airborne Wavemeter for an Atmospheric DIAL Experiment 大气DIAL实验用机载波长计
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.wc9
J. H. Goad
{"title":"An Airborne Wavemeter for an Atmospheric DIAL Experiment","authors":"J. H. Goad","doi":"10.1364/lors.1987.wc9","DOIUrl":"https://doi.org/10.1364/lors.1987.wc9","url":null,"abstract":"A wavemeter is being designed and developed as a subsystem to support the NASA LASE (Laser Atmospheric Sounding Experiment) ER-2 airborne project. The prime objective of this project is to use a DIAL remote sounding system with a pulsed tunable Alexandrite laser to measure vertical profiles of water vapor and aerosols. The technology to make the required wavelength centroid and wavelength profile measurements has been demonstrated by others in laboratory environments. The developmental effort in building this wavemeter is to operate within requirements inside the Q-bay environment of an ER-2 aircraft. In this environment, the temperature can vary from 15 to 40 degrees Celsius and the pressure can vary from 14.7 psi to 3.5 psi. The interferometers in the wavemeter must be isolated from this thermal and pressure variation. A thermally controlled housing and thermal vacuum chambers have been designed and brassboarded to demonstrate the required stability.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"10 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":"123652522","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
Range-Resolved Heterodyne Detection Dual CO2 DIAL Measurements 距离分辨外差检测双CO2表盘测量
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.mb4
W. Grant, D. Tratt
{"title":"Range-Resolved Heterodyne Detection Dual CO2 DIAL Measurements","authors":"W. Grant, D. Tratt","doi":"10.1364/lors.1987.mb4","DOIUrl":"https://doi.org/10.1364/lors.1987.mb4","url":null,"abstract":"There are a number of measurements of atmospheric trace species and aerosols of potential interest in the 9 to 11 micron spectral region covered by CO2 lasers. While direct detection CO2 lidar systems have been used for such range-resolved measurements, the measurement range for such systems is limited to 2 to 4 km (Flanigan, 1986). Heterodyne detection CO2 DIAL was proposed by Kobayasi and Inaba, 1975, and first realized by Fukuda et al., 1984 and Hardesty, 1984, using single laser lidar systems. Heterodyne detection offers increased range (to 10 km or more), but demands greater system and data analysis complexity. This paper will describe measurements made using the Mobile Atmospheric Pollutant Mapping System (MAPM).","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"92 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":"126093991","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
Simulation of Lidar Pressure and Temperature Profile Measurements from the Earth Observing System (EOS) Satellite 来自地球观测系统(EOS)卫星的激光雷达压力和温度廓线测量模拟
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.mc5
C. Korb, C. Weng
{"title":"Simulation of Lidar Pressure and Temperature Profile Measurements from the Earth Observing System (EOS) Satellite","authors":"C. Korb, C. Weng","doi":"10.1364/lors.1987.mc5","DOIUrl":"https://doi.org/10.1364/lors.1987.mc5","url":null,"abstract":"The atmospheric pressure and temperature fields are two of the basic variables of fundamental importance in meteorology, climate studies, and for all scales of weather forecasting. The pressure field is used to describe the state of the atmosphere, frontal characteristics and to determine mass movement. The temperature field is needed for determining tropopause height, the depth and structure of the planetary boundary layer, and frontal and air mass characteristics. This paper presents an analysis of the sensitivity and instrumental parameters needed for lidar differential absorption (DIAL) measurements of pressure and temperature from the Earth Observing System (EOS) satellite. The proposed Lidar Atmospheric Sounder and Altimeter (LASA) facility on the EOS platform will allow global measurements of pressure and temperature profiles from a 700 km polar orbit.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"69 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":"124251463","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
Speckle Effects on Laser Wavelength Measurements with a Fizeau Wavemeter 用菲索波长计测量激光波长的散斑效应
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.wc11
C. Prasad, C. Korb, G. Schwemmer
{"title":"Speckle Effects on Laser Wavelength Measurements with a Fizeau Wavemeter","authors":"C. Prasad, C. Korb, G. Schwemmer","doi":"10.1364/lors.1987.wc11","DOIUrl":"https://doi.org/10.1364/lors.1987.wc11","url":null,"abstract":"In this paper, we present results of an investigation of laser wavelength measurement with a wavemeter incorporating a coated Fizeau high resolution wedge. The effect of speckle on the measurement has been studied and several approaches have been taken to reduce the effect of speckle.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"35 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":"117033184","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
CO2 Laser Pre-Amplifier for Lidar Application 用于激光雷达的CO2激光前置放大器
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.wc3
K. Chan, J. Bufton
{"title":"CO2 Laser Pre-Amplifier for Lidar Application","authors":"K. Chan, J. Bufton","doi":"10.1364/lors.1987.wc3","DOIUrl":"https://doi.org/10.1364/lors.1987.wc3","url":null,"abstract":"A laser pre-amplifier based on the multiple-pass geometry inside a low-pressure, pulsed CO2 laser discharge has been developed for lidar applications near 10 μm wavelength. The laser pre-amplifier produces a gain pulse on the order of 100 μsec duration with peak power gains as large as 1000 (30db). Design considerations, predicted preformance, and initial laboratory test results for this laser pre-amplifier have been previously presented (refs. 1 & 2). In this paper we report the results of a series of laboratory tests on the pulsed gain and gain stability when this laser pre-amplifier is used with a CO2 TEA laser source. These measurements form the basis for application of the pre-amplfier to enhanced direct-detection in a CO2 lidar.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"223 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":"122900523","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
Enhanced Direct-Detection of CO2 Lidar Returns Using a Laser Pre-Amplifier* 利用激光前置放大器增强CO2激光雷达回波的直接探测*
Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques Pub Date : 1988-08-01 DOI: 10.1364/lors.1987.wc14
D. Killinger, J. Bufton, E. Mclellan
{"title":"Enhanced Direct-Detection of CO2 Lidar Returns Using a Laser Pre-Amplifier*","authors":"D. Killinger, J. Bufton, E. Mclellan","doi":"10.1364/lors.1987.wc14","DOIUrl":"https://doi.org/10.1364/lors.1987.wc14","url":null,"abstract":"The relative merits and technical differences between direct-detection and heterodyne-detection for CO2 lidar are well known. Direct-detection offers enhanced information concerning the average intensity of the lidar returns but at the expense of reduced signal-to-noise level. Heterodyne detection requires an increase in system complexity, provides an enhancement in the S/N ratio of 4 to 6 orders of magnitude, but is limited in its ability to scan rapidly through several CO2 laser lines.","PeriodicalId":339230,"journal":{"name":"Topical Meeting on Laser and Optical Remote Sensing: Instrumentation and Techniques","volume":"24 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":"133011660","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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