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Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium最新文献

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Dedicated SAR applications for regional observation missions 区域观测任务专用SAR应用程序
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322220
C. Dionisio, G. Perrotta, A. Torre
{"title":"Dedicated SAR applications for regional observation missions","authors":"C. Dionisio, G. Perrotta, A. Torre","doi":"10.1109/IGARSS.1993.322220","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322220","url":null,"abstract":"Synthetic aperture radar (SAR) has seen a huge increase of interest from many present and potential users. The good spatial resolution associated with the all weather capability leads one to consider SAR as not only a scientific instrument but a tool for verifying and controlling human daily relationships with the environment. New applications have been identified for the regional scale environment involving a nation, a closed sea or a specific observation mission. The key parameter for enlarging the number of users and applications is the revisit interval time which should be on the order of hours. A constellation of small satellites (SS) can be conceived in multiple inclined orbits in to meet specific revisit time requirements. Small satellites can support adequately medium spatial resolution SAR. The paper deals with the description of possible observation missions for this new SS/SAR concept on the regional scale. The mission requirement is defined and system dimensioning aspects outlined.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115695726","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
Multitemporal analysis of ERS-1 SAR images over land areas 陆地ERS-1 SAR影像的多时相分析
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322741
D. Weydahl
{"title":"Multitemporal analysis of ERS-1 SAR images over land areas","authors":"D. Weydahl","doi":"10.1109/IGARSS.1993.322741","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322741","url":null,"abstract":"ERS-1 SAR images have only one frequency and polarization. Analysis and classification of ground features is thus a difficult task. However, combining several SAR images acquired at different times over the same area, shows an increase in the overall classification result. However, this result depends highly on the image combination, number of images, and speckle filter method used. Multitemporal analysis may also be used to increase knowledge of radar backscatter from different vegetation and surface categories throughout the season.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114657446","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: 9
Ice regimes in the Antarctic and the Arctic using satellite multichannel passive microwave data 利用卫星多通道无源微波数据研究南极和北极的冰况
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322627
J. Comiso
{"title":"Ice regimes in the Antarctic and the Arctic using satellite multichannel passive microwave data","authors":"J. Comiso","doi":"10.1109/IGARSS.1993.322627","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322627","url":null,"abstract":"Monthly and weekly brightness temperature data from the various SSMI channels, especially the 85 GHz channel, show the existence of ice covered areas associated with persistent brightness temperatures. The physical characteristics of the ice cover in each of these areas are studied for possible association with different regimes of the sea ice cover. In general, the ice cover can be divided into different ice regimes that are associated with extensive new ice formation, young ice regions, first year ice areas with or without thick snow cover and a few types of multiyear ice areas. Unsupervised identification of the regimes is done with multichannel cluster analysis. The interpretation of the different regimes is based mainly on extensive field measurements, radiative transfer calculations, comparisons with other satellite data, and time series development of the surface ice cover from early fall through winter. The key to proper identification of some of this region is the use of the 85 GHz data, which is the most sensitive to surface effects among the SSM/I channels.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116711717","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
Use of co-polar correlation coefficient for probing precipitation along the vertical 利用共极相关系数探测垂直方向降水
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322110
D. Zrnic, N. Balakrishnan, A. Ryzhkov, S. L. Durden
{"title":"Use of co-polar correlation coefficient for probing precipitation along the vertical","authors":"D. Zrnic, N. Balakrishnan, A. Ryzhkov, S. L. Durden","doi":"10.1109/IGARSS.1993.322110","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322110","url":null,"abstract":"Presents observations of the co-polar correlation coefficient |/spl rhosub hv/(0)| made with a ground based and airborne weather radars along the vertical. Also differential phase and differential reflectivity at a 10/spl deg/ off nadir are shown. Simple models of prolate and oblate spheroids are used to qualitatively explain the observations.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116759996","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
Satellite monitoring of storm flood spread as a land-ocean interaction 卫星监测暴雨洪水作为陆地-海洋相互作用的传播
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322524
S. Nakamura
{"title":"Satellite monitoring of storm flood spread as a land-ocean interaction","authors":"S. Nakamura","doi":"10.1109/IGARSS.1993.322524","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322524","url":null,"abstract":"This work is a brief note on the satellite thermal monitoring of storm flood water spread-around the Kuroshio flow off the south coast of the Japanese Islands. One of the typical thermal patterns is described in order to study what evaluation can be given for a satellite monitoring thermal images which are obtained by automatic picture transform. Reference data is used for an advanced understanding of pictures.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117192943","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
Observation of lake current patterns using satellite images and comparison with results from numerical simulations 利用卫星图像观测湖泊流型，并与数值模拟结果进行比较
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322287
T. Matsunaga, Y. Okubo, Y. Inouchi
{"title":"Observation of lake current patterns using satellite images and comparison with results from numerical simulations","authors":"T. Matsunaga, Y. Okubo, Y. Inouchi","doi":"10.1109/IGARSS.1993.322287","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322287","url":null,"abstract":"Six LANDSAT TM images of Lake Suwa, Japan, were processed to extract current patterns. The lake was almost completely covered with Aoko (phytoplankton bloom) in three summer images. But two spring images, which were after rainfall, showed dispersion patterns of suspended particles from a river. The directions of dispersion were the same as the local wind at the mouth of the river, but opposite at the middle of the lake. These patterns were compared with current patterns simulated by the numerical two-dimensional lake current model newly developed by the authors. It was suggested that the satellite can observe horizontal circulations in shallow lakes.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127132473","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
Multitemporal water quality analysis along the Ligurian coast 利古里亚沿岸多时期水质分析
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322184
P. Cipollini, G. Corsini, E. Ferretti
{"title":"Multitemporal water quality analysis along the Ligurian coast","authors":"P. Cipollini, G. Corsini, E. Ferretti","doi":"10.1109/IGARSS.1993.322184","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322184","url":null,"abstract":"The problem of the evaluation of coastal water quality parameters (pigment and suspended matter concentrations) by remotely sensed Thematic Mapper data is addressed. A case study is examined and discussed in detail, comparing in situ measurements with Thematic Mapper processed data.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127284148","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: 4
Use of Landsat TM image segmentation for smoothing ERS-1 SAR imagery in combined multi-sensor landscape classification 利用Landsat TM图像分割平滑ERS-1 SAR图像进行多传感器景观分类
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322113
R.P.H.M. Schoenmakers, G. Wilkinson, T. Schouten
{"title":"Use of Landsat TM image segmentation for smoothing ERS-1 SAR imagery in combined multi-sensor landscape classification","authors":"R.P.H.M. Schoenmakers, G. Wilkinson, T. Schouten","doi":"10.1109/IGARSS.1993.322113","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322113","url":null,"abstract":"The combination of Landsat TM and ERS-1 SAR data can potentially lead to improved land cover mapping. Initially however SAR data must undergo speckle noise filtering. In southern Europe where land cover units are very small conventional filtering techniques can remove valuable information. The paper describes the potential use of segmentation of Landsat TM data to describe boundaries which can serve as a basis for SAR speckle noise filtering prior to incorporation in integrated multi-sensor classification.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126092177","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
The measurement on the dielectric properties of ice at HF, VHF and microwave frequencies 冰在高频、甚高频和微波频率下的介电特性测量
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322667
S. Fujita, T. Matsuoka, S. Morishima, S. Mae
{"title":"The measurement on the dielectric properties of ice at HF, VHF and microwave frequencies","authors":"S. Fujita, T. Matsuoka, S. Morishima, S. Mae","doi":"10.1109/IGARSS.1993.322667","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322667","url":null,"abstract":"The dielectric properties of ice Ih (hexagonal ice) were measured at HF, VHF and microwave frequencies using several methods appropriate for each frequency range. C-axis orientation dependence of the complex permittivity was particularly investigated because the dielectric anisotropy of the media determines the polarization state of the electromagnetic waves propagating in it and because it can cause the radio-echo internal reflections in the polar ice sheets. It was confirmed that the difference between the real part of the permittivity parallel to the c-axis and perpendicular to the c-axis is almost the same at HF and at microwave frequency. In addition, it was confirmed that the anisotropy of the loss tangent was about 20% at -22/spl deg/C at HF, i.e. at frequencies characterized by the high frequency tail of the Debye relaxation spectrum. This value is well explained mainly by the anisotropy in the dispersion strength and partly by the anisotropy in the relaxation time of Debye dispersion. In addition, these facts suggests this ratio hold over frequencies up to microwave where the absorption of the lattice vibration becomes dominant.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125518424","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: 11
Simulation of hydrometeor scattered signals effect on communications systems BER 水流星散射信号对通信系统误码率影响的仿真
Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium Pub Date : 1993-08-18 DOI: 10.1109/IGARSS.1993.322559
R. Sadeghzadeh, N. McEwan, I. Glover
{"title":"Simulation of hydrometeor scattered signals effect on communications systems BER","authors":"R. Sadeghzadeh, N. McEwan, I. Glover","doi":"10.1109/IGARSS.1993.322559","DOIUrl":"https://doi.org/10.1109/IGARSS.1993.322559","url":null,"abstract":"Hydrometeor scattered signals originating from one system have the potential to interfere with other independent systems. It is conceivable that the effect of such interference (as measured by BER) in digital communications receivers may depend not only on the hydrometeor scattered signals gross power but also on its temporal and/or spectral characteristics. One way of testing whether or not this is the case is to generate signals characteristics of hydrometeor scatter and observe their effect on the BER of a communications system. A cheap, flexible and convenient way of implementing such a test is to use numerical simulation.<<ETX>>","PeriodicalId":312260,"journal":{"name":"Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125539137","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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