Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472331
I. V. Cherny, A. M. Alesin, N.N. Gorobetz, V.P. Nakonechny, S. Pantzov, A.I. Zabishny
For oceanography and meteorology it is important to develop a remote sensing technique that can provide information about processes taking place in the active ocean layer, including those that produce the decisive influence on the atmospheric state. Although mm-wave radiometry is traditionally used mainly for atmospheric studies, it could be effectively applied in oceanographic research. This paper describes the advanced airborne multispectral mm-wave imagine technique for remote sensing of the ocean-atmosphere system. The possibility for diagnostics of the oceanic and atmospheric processes with the sea surface microwave emission is discussed.<>
{"title":"Advanced airborne multispectral mm-wave imaging technique for ocean and atmosphere studies","authors":"I. V. Cherny, A. M. Alesin, N.N. Gorobetz, V.P. Nakonechny, S. Pantzov, A.I. Zabishny","doi":"10.1109/COMEAS.1995.472331","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472331","url":null,"abstract":"For oceanography and meteorology it is important to develop a remote sensing technique that can provide information about processes taking place in the active ocean layer, including those that produce the decisive influence on the atmospheric state. Although mm-wave radiometry is traditionally used mainly for atmospheric studies, it could be effectively applied in oceanographic research. This paper describes the advanced airborne multispectral mm-wave imagine technique for remote sensing of the ocean-atmosphere system. The possibility for diagnostics of the oceanic and atmospheric processes with the sea surface microwave emission is discussed.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122460368","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472332
J. Apel, V. Etkin, A. Smirnov, R. Carande
During a joint U.S.-Russian experiment designed to detect signatures of oceanic processes with synthetic aperture radar, an upwelling event was imaged off the west coast of England. The event was observed on 5 July 1991 at 6:41:46 GMT, and was centered near 48/spl deg/N, 8.9/spl deg/ W. The images were acquired nearly simultaneously, with radar look-direction and swaths being as closely aligned as geometry and platform speed allowed. The upwelling was thus observed on 13 channels, with wavelengths of 68, 24, 10 and 5.7 cm, and polarization combinations of /spl nu//spl nu/, hh, /spl nu/h, and h/spl nu/. The differences between the images made with the various frequencies and polarizations give information on important processes occurring at the sea surface. The upwelling appears to have been caused by tidal flow against the continental shelf in a region of rapidly varying bathymetry. The tidal forcing thus drives the deep, cold water upwards toward the surface in a process known in Russian as a soloy, or a mushroom-shaped blossom that spreads out from the deep across the surface. At the surface it modifies the wind stress over the regions of cooler water, because of lowered evaporation and thus reduced turbulent fluctuations in the atmospheric boundary layer. Areas of reduced roughness appear dark relative to the surrounding fluid, even though the wind speed is uniform over the entire region. However, the morphology of the dark regions in the lower-stress regions varies greatly with frequency and polarization. What appears to be rough at one wavelength and polarization is smoother at another combination of these parameters.<>
{"title":"Multisensor, multifrequency, and multipolarization SAR imagery of oceanic upwelling off the coast of England: a case study of spacecraft and aircraft imagery","authors":"J. Apel, V. Etkin, A. Smirnov, R. Carande","doi":"10.1109/COMEAS.1995.472332","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472332","url":null,"abstract":"During a joint U.S.-Russian experiment designed to detect signatures of oceanic processes with synthetic aperture radar, an upwelling event was imaged off the west coast of England. The event was observed on 5 July 1991 at 6:41:46 GMT, and was centered near 48/spl deg/N, 8.9/spl deg/ W. The images were acquired nearly simultaneously, with radar look-direction and swaths being as closely aligned as geometry and platform speed allowed. The upwelling was thus observed on 13 channels, with wavelengths of 68, 24, 10 and 5.7 cm, and polarization combinations of /spl nu//spl nu/, hh, /spl nu/h, and h/spl nu/. The differences between the images made with the various frequencies and polarizations give information on important processes occurring at the sea surface. The upwelling appears to have been caused by tidal flow against the continental shelf in a region of rapidly varying bathymetry. The tidal forcing thus drives the deep, cold water upwards toward the surface in a process known in Russian as a soloy, or a mushroom-shaped blossom that spreads out from the deep across the surface. At the surface it modifies the wind stress over the regions of cooler water, because of lowered evaporation and thus reduced turbulent fluctuations in the atmospheric boundary layer. Areas of reduced roughness appear dark relative to the surrounding fluid, even though the wind speed is uniform over the entire region. However, the morphology of the dark regions in the lower-stress regions varies greatly with frequency and polarization. What appears to be rough at one wavelength and polarization is smoother at another combination of these parameters.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134600380","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472355
Y. Govaerts, M. Verstraete
Extracting quantitative information from remote sensing data requires analytical tools such as canopy reflectance models to interpret radiative measurements in terms of the quantities of Interest. A new model (Raytran) of radiation transfer in complex three-dimensional media, taking advantage of the latest ray tracing computer graphics techniques, has been developed to study the transfer of solar radiation in terrestrial environments over a variety of spatial scales. This model is used as a "virtual laboratory", to generate reflectances and absorption profiles of complex targets, where all geometrical and physical quantities can be controlled explicitly. The accuracy of this model has been established by comparison with other Monte Carlo models and with laboratory measurements. The purpose of this paper is to illustrate potential applications of this model.<>
{"title":"Modeling the scattering of light in three-dimensional canopies: contribution of a Monte Carlo ray tracing approach","authors":"Y. Govaerts, M. Verstraete","doi":"10.1109/COMEAS.1995.472355","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472355","url":null,"abstract":"Extracting quantitative information from remote sensing data requires analytical tools such as canopy reflectance models to interpret radiative measurements in terms of the quantities of Interest. A new model (Raytran) of radiation transfer in complex three-dimensional media, taking advantage of the latest ray tracing computer graphics techniques, has been developed to study the transfer of solar radiation in terrestrial environments over a variety of spatial scales. This model is used as a \"virtual laboratory\", to generate reflectances and absorption profiles of complex targets, where all geometrical and physical quantities can be controlled explicitly. The accuracy of this model has been established by comparison with other Monte Carlo models and with laboratory measurements. The purpose of this paper is to illustrate potential applications of this model.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130130597","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472382
C. Werner, J. Streicher, V. Banakh, I. Smalikho, B. Kaul
The wind field and turbulence of the atmospheric boundary layer are important parameters for various application fields, like meteorology, atmospheric physics, environmental protection, wind-energy utilization, air-traffic control, and-so-on. Their high variability in spatial and temporal scales necessitates a fast remote-sensing method. From the available techniques Doppler lidar has proved to be the most promising candidate. Therefore, the DLR Institute has combined its well established laser doppler anemometer (LDA) and its laser-based ceilometer with a sonic anemometer.<>
{"title":"Combination of laser cloud ceilometer, sonic anemometer, and cw-Doppler lidar for boundary layer measurements","authors":"C. Werner, J. Streicher, V. Banakh, I. Smalikho, B. Kaul","doi":"10.1109/COMEAS.1995.472382","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472382","url":null,"abstract":"The wind field and turbulence of the atmospheric boundary layer are important parameters for various application fields, like meteorology, atmospheric physics, environmental protection, wind-energy utilization, air-traffic control, and-so-on. Their high variability in spatial and temporal scales necessitates a fast remote-sensing method. From the available techniques Doppler lidar has proved to be the most promising candidate. Therefore, the DLR Institute has combined its well established laser doppler anemometer (LDA) and its laser-based ceilometer with a sonic anemometer.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129391643","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472327
W. Smith, W. Feltz, R. Knuteson, H. Revercomb, S. Melfi, R. Ferrare
The ground-based Atmospheric Emitted Radiance Interferometer and the aircraft ER-2 High resolution Interferometer Sounder have operated simultaneously with the GSFC Raman lidar during several field experiments; FIRE II/Spectre at Coffeyville Kansas during November-December 1991, and CAMEX at Wallops Island, Virginia during September-October 1993, and the ARM Single Column Model IOP at Lament, Oklahoma during April 1994. These data are used to validate simultaneous retrievals of atmospheric moisture by the three instruments. These data are used to investigate the extent to which passive radiometric soundings of atmospheric temperature, from the ground and from aircraft or satellite, can be improved by using detailed water vapor profiles supplied by active systems such as the Raman lidar.<>
{"title":"Intercomparison and amalgamation of interferometer and Raman lidar data","authors":"W. Smith, W. Feltz, R. Knuteson, H. Revercomb, S. Melfi, R. Ferrare","doi":"10.1109/COMEAS.1995.472327","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472327","url":null,"abstract":"The ground-based Atmospheric Emitted Radiance Interferometer and the aircraft ER-2 High resolution Interferometer Sounder have operated simultaneously with the GSFC Raman lidar during several field experiments; FIRE II/Spectre at Coffeyville Kansas during November-December 1991, and CAMEX at Wallops Island, Virginia during September-October 1993, and the ARM Single Column Model IOP at Lament, Oklahoma during April 1994. These data are used to validate simultaneous retrievals of atmospheric moisture by the three instruments. These data are used to investigate the extent to which passive radiometric soundings of atmospheric temperature, from the ground and from aircraft or satellite, can be improved by using detailed water vapor profiles supplied by active systems such as the Raman lidar.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130899228","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472364
F. Li
Provides an overview of some recent developments in active microwave remote system systems at JPL. The authors describe the preliminary engineering and scientific results from the two recent flights of the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) on the space shuttle Endeavor. The key features of the radar design are summarized and the potential applications of the radar results to Earth science are described. The author also describes the recent progress in the development of interferometric SAR for high resolution topography mapping. The principle of this technique and results from airborne experiments are presented. Finally, development of meteorological radars for rain and cloud measurements is discussed. The design of an airborne rain mapping radar that was developed to support the Tropical Rainfall Measuring Mission is summarized. In addition, the design and development of an airborne 94 GHz cloud mapping radar are discussed.<>
概述了JPL有源微波远程系统的一些最新进展。作者介绍了奋进号航天飞机上的星载成像雷达- c / x波段合成孔径雷达(SIR-C/X-SAR)最近两次飞行的初步工程和科学结果。总结了雷达设计的主要特点，并介绍了雷达结果在地球科学中的潜在应用。本文还介绍了用于高分辨率地形测绘的干涉SAR的最新进展。介绍了该技术的原理和机载实验结果。最后，讨论了用于雨和云测量的气象雷达的发展。总结了为支持热带雨量测量任务而研制的机载雨量测绘雷达的设计。此外，还讨论了机载94 GHz云测绘雷达的设计与研制。
{"title":"Recent developments in active microwave systems at JPL","authors":"F. Li","doi":"10.1109/COMEAS.1995.472364","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472364","url":null,"abstract":"Provides an overview of some recent developments in active microwave remote system systems at JPL. The authors describe the preliminary engineering and scientific results from the two recent flights of the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) on the space shuttle Endeavor. The key features of the radar design are summarized and the potential applications of the radar results to Earth science are described. The author also describes the recent progress in the development of interferometric SAR for high resolution topography mapping. The principle of this technique and results from airborne experiments are presented. Finally, development of meteorological radars for rain and cloud measurements is discussed. The design of an airborne rain mapping radar that was developed to support the Tropical Rainfall Measuring Mission is summarized. In addition, the design and development of an airborne 94 GHz cloud mapping radar are discussed.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128912218","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472338
R. Gasparovic
Over the past two decades, a significant number of remote sensing techniques have been developed and validated for quantitative observations of ocean surface phenomena and air-sea interaction processes. Infrared and microwave radiometers can make accurate measurements of surface temperature patterns, multispectral optical systems can monitor upper ocean biological productivity, active and passive microwave systems can map wind fields and rainfall, altimeters routinely track the large scale circulation systems, and imaging radars are capable of monitoring surface waves and currents, internal waves, and tidal flows over bathymetric features. Along with the development of these tools has come a heightened awareness of the role of the world's oceans as a primary determinant of our weather systems and the global climate. Within the next decade, new satellite systems will be launched as part of an international effort to assemble the beginnings of a truly global ocean observing system that will provide unprecedented opportunities to better understand, monitor, and predict the impacts of oceanic changes on global processes and habitability. This presentation will provide an overview of where we have come and a glimpse of where we can expect to go in the near future.<>
{"title":"An overview of the role of remote sensors for global ocean observations","authors":"R. Gasparovic","doi":"10.1109/COMEAS.1995.472338","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472338","url":null,"abstract":"Over the past two decades, a significant number of remote sensing techniques have been developed and validated for quantitative observations of ocean surface phenomena and air-sea interaction processes. Infrared and microwave radiometers can make accurate measurements of surface temperature patterns, multispectral optical systems can monitor upper ocean biological productivity, active and passive microwave systems can map wind fields and rainfall, altimeters routinely track the large scale circulation systems, and imaging radars are capable of monitoring surface waves and currents, internal waves, and tidal flows over bathymetric features. Along with the development of these tools has come a heightened awareness of the role of the world's oceans as a primary determinant of our weather systems and the global climate. Within the next decade, new satellite systems will be launched as part of an international effort to assemble the beginnings of a truly global ocean observing system that will provide unprecedented opportunities to better understand, monitor, and predict the impacts of oceanic changes on global processes and habitability. This presentation will provide an overview of where we have come and a glimpse of where we can expect to go in the near future.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122407378","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472354
V. Salomonson, D. Hall, Janeet Y. L. Chien
Satellite data from different sensors can be exploited to yield maximum information on snow cover, depth and reflectance. This paper reflects some rudimentary efforts to compare optical and passive-microwave data for mapping snow cover. The authors discuss some of the advantages and difficulties in using optical and passive-microwave data, together, to map snow cover. The ability to use multiple data sets will be especially important when future Earth Observing System (EOS) sensors are launched with improved optical and microwave sensors in the late 1990s and early 21st century. Thus it is necessary to intercompare data sets now so that reliable algorithms will be in place at or near the time when EOS is launched.<>
{"title":"Use of passive microwave and optical data for large-scale snow-cover mapping","authors":"V. Salomonson, D. Hall, Janeet Y. L. Chien","doi":"10.1109/COMEAS.1995.472354","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472354","url":null,"abstract":"Satellite data from different sensors can be exploited to yield maximum information on snow cover, depth and reflectance. This paper reflects some rudimentary efforts to compare optical and passive-microwave data for mapping snow cover. The authors discuss some of the advantages and difficulties in using optical and passive-microwave data, together, to map snow cover. The ability to use multiple data sets will be especially important when future Earth Observing System (EOS) sensors are launched with improved optical and microwave sensors in the late 1990s and early 21st century. Thus it is necessary to intercompare data sets now so that reliable algorithms will be in place at or near the time when EOS is launched.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127438999","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472318
Niels Skou
The Scanning Microwave Radar and Radiometer (SMRR) is a line scanner featuring a combined radar and radiometer system operating around 35 and 94 GHz. The layout of the SMRR is shown. The 2 offset antenna parabolas scan in synchronism, the receiver antenna has the highest gain in order to ensure that footprints are identical for the radar and the radiometer. The instrument will be flown in a pod under a Gulfstream G3 normally cruising with 240 m/sec at 12500 m, and will thus be able to sense clouds and precipitation from above.<>
{"title":"A Scanning Microwave Radar and Radiometer","authors":"Niels Skou","doi":"10.1109/COMEAS.1995.472318","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472318","url":null,"abstract":"The Scanning Microwave Radar and Radiometer (SMRR) is a line scanner featuring a combined radar and radiometer system operating around 35 and 94 GHz. The layout of the SMRR is shown. The 2 offset antenna parabolas scan in synchronism, the receiver antenna has the highest gain in order to ensure that footprints are identical for the radar and the radiometer. The instrument will be flown in a pod under a Gulfstream G3 normally cruising with 240 m/sec at 12500 m, and will thus be able to sense clouds and precipitation from above.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127478716","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}
Pub Date : 1995-04-03DOI: 10.1109/COMEAS.1995.472366
V. Molebny, S. Kuzmin
Discusses the n-dimensional vector representation of the properties of multitemporal or multispectral remotely sensed objects. The known classification procedure permits object identification as i-th class in n-dimensional space. For many cases, increasing n leads to higher informativity and thus to higher probability of correct identification. The number of information channels being given, higher informativity can be reached using multitemporal sensing. This technique is especially productive for vegetation study, because each kind of vegetation has its own temporal gradient of properties evolution, even on comparatively short time intervals. For multichannel sensing both for simultaneous multispectral and multitemporal ones, spatial correspondence is the problem of principle. The authors describe an image classification scheme which consists of two stage pixel to pixel identification. The first stage provides topographical coincidence of the same point under analysis for all channels and the second stage results in characterisation of the pixel under study.<>
{"title":"Topographical matching of multisensor information","authors":"V. Molebny, S. Kuzmin","doi":"10.1109/COMEAS.1995.472366","DOIUrl":"https://doi.org/10.1109/COMEAS.1995.472366","url":null,"abstract":"Discusses the n-dimensional vector representation of the properties of multitemporal or multispectral remotely sensed objects. The known classification procedure permits object identification as i-th class in n-dimensional space. For many cases, increasing n leads to higher informativity and thus to higher probability of correct identification. The number of information channels being given, higher informativity can be reached using multitemporal sensing. This technique is especially productive for vegetation study, because each kind of vegetation has its own temporal gradient of properties evolution, even on comparatively short time intervals. For multichannel sensing both for simultaneous multispectral and multitemporal ones, spatial correspondence is the problem of principle. The authors describe an image classification scheme which consists of two stage pixel to pixel identification. The first stage provides topographical coincidence of the same point under analysis for all channels and the second stage results in characterisation of the pixel under study.<<ETX>>","PeriodicalId":274878,"journal":{"name":"Conference Proceedings Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129121299","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}
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