[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium最新文献_第3页

Diffraction from Sharply Peaked Waves As an Ocean Surface Scattering Mechanism 尖锐尖峰波的衍射作为海洋表面散射机制

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.578889

G. A. Jensen, J. Vesecky, R. Glazman

引用次数: 6

Resonant Radiothermal Emission of Water Surface with Non-Small Periodic Roughness 非小周期粗糙度水面的共振辐射热发射

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.578482

V. Etkin, V.G. Irisov, Y. Trokhimovsky

引用次数: 3

Empirical Quality Assessment: Effect of Resampling on Geometric and Radiometric Data Quality Using a Regionbased Approach 经验质量评估:使用基于区域的方法重采样对几何和辐射数据质量的影响

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.578489

P. Meyer

引用次数: 3

The Effect Of Spatial Resolution Upon Cloud Optical Property Retrievals Part I: Optical Thickness 空间分辨率对云光学特性检索的影响第一部分:光学厚度

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576815

R. Feind, S. Christopher, R. Welch

{"title":"The Effect Of Spatial Resolution Upon Cloud Optical Property Retrievals Part I: Optical Thickness","authors":"R. Feind, S. Christopher, R. Welch","doi":"10.1109/IGARSS.1992.576815","DOIUrl":"https://doi.org/10.1109/IGARSS.1992.576815","url":null,"abstract":"High spectral and spatial resolution Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) imagery is used to study the effects of spatial resolution upon fair weather cumulus cloud optical thickness retrievals. As a preprocessing step, a variation of the Gao and Goetz three-band ratio technique is used to discriminate clouds from the background. The combination of the elimination of cloud shadow pixels and using the first derivative of the histogram allows for accurate cloud edge discrimination. The data are progressively degraded from 20 m to 960 m spatial resolution. The results show that retrieved cloud area increases with decreasing spatial resolution. The results also show that there is a monotonic decrease in retrieved cloud optical thickness with decreasing spatial resolution. It is also demonstrated that the use of a single, monospectral reflectance threshold is inadequate for identifying cloud pixels in fair weather cumulus scenes and presumably in any inhomogeneous cloud field. Cloud edges have a distribution of reflectance thresholds. The incorrect identification of cloud edges significantly impacts the accurate retrieval of cloud optical thickness values.","PeriodicalId":441591,"journal":{"name":"[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129101008","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

A Workstation For Ers-1 / J-ers-1 / Multifrequency Polarimetric Sar Calibration And Validation Ers-1 / J-ers-1 /多频极化Sar定标与验证工作站

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576798

Y. Desnos, F. Seifert, M. Loiselet

{"title":"A Workstation For Ers-1 / J-ers-1 / Multifrequency Polarimetric Sar Calibration And Validation","authors":"Y. Desnos, F. Seifert, M. Loiselet","doi":"10.1109/IGARSS.1992.576798","DOIUrl":"https://doi.org/10.1109/IGARSS.1992.576798","url":null,"abstract":"In view of the growing number of Synthetic Aperture Radar instruments flying (ERS-1, NASA DC8 SAR) or to be flown (JERS-1, SIR-C, RADARSAT) and considering commonalities in tools for Calibration/Validation, a Unix workstation dedicated to SAR engineering Calibration and Validation has been developed at ESTEC(XR1). The workstation software has been designed to be able to handle different data formats and to decode the engineering parameters of the instrument. The user has interactively access to a full range of display from full resolution images to images of the full swath in compressed format in order to select point or distributed targets for further analysis. Quality analysis part of the software is used on point targets to characterise the Impulse Response Function of the instrument: resolution, peak side lobe ratio, integrated sidelobe ratio and signal to background. Calibration part of the software corrects for polarimetric SAR instruments relative channel imbalance (amplitude and phase) and cross-talk using calibration targets and/or distributed targets. For both conventional SAR and polarimetric SAR absolute calibration constants might be derived from two integral methods or a peak estimation method. Quality analysis and calibration results from ESA ERS-1 SAR data are presented and equivalent results from NASA DC8 SAR are discussed.","PeriodicalId":441591,"journal":{"name":"[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121265463","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

Investigations of radar signatures of lake surface with the "COSMOS-1870" ("ALMAZ-0") SAR “COSMOS-1870”(“ALMAZ-0”)SAR对湖面雷达特征的研究

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.578891

V. Etkin, K. Litovchenko, A. Smirnov, M. Naumenko

引用次数: 2

Range Ambiguities For A Polarimetric Spaceborne SAR 极化星载SAR的距离模糊

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576791

R. Cordey

引用次数: 2

Comparison Of Millimeter-wave Radar Observations Of Snow With Energy And Mass Transfer Simulation 毫米波雷达积雪观测与能量传质模拟的比较

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576841

R. Davis, R. Jordan, J. Nagle, H. Boyne

引用次数: 0

SAR Processing Based On The Exact Two-dimensional Transfer Function 基于精确二维传递函数的SAR处理

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576710

C. Y. Chang, M. Y. Jin, J. Curlander

引用次数: 26

Polarimetric Speckle Filters For SAR Data SAR数据偏振散斑滤波器

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium Pub Date : 1992-05-26 DOI: 10.1109/IGARSS.1992.576632

A. Lopes, S. Goze, E. Nezry

引用次数: 20