IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)最新文献_第4页

Synthetic aperture radar interferometry: a statistical model for layover areas 合成孔径雷达干涉测量:一种停留区域的统计模型

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.771520

A. Wilkinson

引用次数: 10

Passive microwave in situ measurements over snow covered Siberian sea ice compared with SSM/I 与SSM/I相比较的西伯利亚冰雪海冰被动微波原位测量

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.772028

K. Johnsen, G. Heygster, A. Darovskikh

{"title":"Passive microwave in situ measurements over snow covered Siberian sea ice compared with SSM/I","authors":"K. Johnsen, G. Heygster, A. Darovskikh","doi":"10.1109/IGARSS.1999.772028","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.772028","url":null,"abstract":"Snow on sea ice affects the energy and mass balance of sea ice on seasonal and synoptic scales and is, with its high albedo, responsible for a net cooling effect on global climate. To quantify the distribution of snow on a large scale satellite based measurements are necessary. To determine the influence of snow on the passive microwave signal snow thickness measurements and brightness temperatures at 11, 21 and 35 GHz with different incidence angles and polarizations were performed over sea ice in the Kara and Laptev Sea during the Arctic expedition ARK-12 of R.V. Polarstern in September 1996. Comparison of in situ data with two emissivity models including one based on the Combined Radiative Transfer-Strong Fluctuation Theory show that the most important influence on the spaceborne passive microwave signal in the Siberian Arctic is scattering in the snow while the outliers can be explained by absorption in the snow due to high free water content at temperatures near 0/spl deg/C. The brightness temperature gradient ratio of the vertically polarized 19 and 37 GHz channels is used to derive a retrieval algorithm for the snow thickness from SSM/I data. Its sample application to the whole Arctic shows an increase of snow thickness with latitude in accordance with measurements from Russian drifting stations.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122946048","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

Contending with high relief and temporal decorrelation in an InSAR study of the effects of reservoir loading 在InSAR油藏加载影响研究中，与高起伏和时间去相关相抗衡

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.773538

G.S. Doyle, A. Wilkinson, M. Inggs

引用次数: 5

Natural and anthropogenetic pollution limits of the stratospheric ozone 平流层臭氧的自然和人为污染极限

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774460

F. Caldararu, M. Caldararu, S. Patrascu, A. Paraschiv, D. Nicolaescu

引用次数: 0

Evaluation of merging SPOT multispectral and panchromatic data for classification of urban environment 融合SPOT多光谱与全色数据用于城市环境分类的评价

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774582

M. Shaban, O. Dikshit

引用次数: 22

Using satellite altimetry and historical gauge data for validation of the hydrological significance of the JERS-1 SAR (GRFM) mosaics in central Africa 利用卫星测高和历史测量数据验证中部非洲JERS-1 SAR (GRFM)拼接的水文意义

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.771641

Å. Rosenqvist, C. Birkett, E. Bartholomé, G. D. de Grandi

{"title":"Using satellite altimetry and historical gauge data for validation of the hydrological significance of the JERS-1 SAR (GRFM) mosaics in central Africa","authors":"Å. Rosenqvist, C. Birkett, E. Bartholomé, G. D. de Grandi","doi":"10.1109/IGARSS.1999.771641","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.771641","url":null,"abstract":"As part of the Global Rain Forest Mapping (GRFM) project, two 100 meter resolution, continental-scale JERS-1 L-band SAR mosaics have been generated over the Congo river basin in central Africa. The satellite acquisitions were scheduled to coincide with the high and low water marks of the Congo river, in order to facilitate assessment of the spatial and temporal distribution of the annual flooding patterns in the river basin. With L-band microwave signals being particularly sensitive to inundated vegetation, the GRFM mosaics were expected to provide an opportunity to investigate inundation dynamics in the poorly mapped wetlands in central Africa. This paper provides an assessment of how well the two central African GRFM mosaics actually represent the two extreme flooding conditions in the Congo basin. In the absence of operational river gauge stations along the Congo, river stages derived by the NASA Radar Altimeter on TOPEX/POSEIDON were used to validate the water level variations during 1996, when the GRFM acquisitions were performed. Historical gauge data dating back to 1959 and earlier, were used to provide an indication the general flooding cycles in areas which could not be measured by the altimeter. Also affecting the \"hydrological usefulness\" of the mosaics, the temporal composition of the JERS-1 data used to form the two canvases, i.e. the occurrence of gaps or scenes with deviating acquisition dates, was finally also investigated.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114521272","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

Clearinghouse for seismic data 地震资料交换中心

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774566

C. Seegraef, F. Lochter, L. Lesch, J. Wachter

引用次数: 0

Mapping land cover types in Amazon basin using 1 km JERS-1 mosaic 基于1 km JERS-1马赛克的亚马逊流域土地覆盖类型制图

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774490

S. Saatchi, B. Nelson, E. Podest, J. Holt

引用次数: 51

Monitoring the moisture status of the land surface in Sicily using an energy balance approach 利用能量平衡法监测西西里岛地表水分状况

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774474

S. Niemeyer, J. Vogt

引用次数: 2

A comparative evaluation of multiband radar for detecting and mapping wetland inundation 多波段雷达用于湿地淹没探测与制图的比较评价

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774974

A. Milne

{"title":"A comparative evaluation of multiband radar for detecting and mapping wetland inundation","authors":"A. Milne","doi":"10.1109/IGARSS.1999.774974","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.774974","url":null,"abstract":"The aim of this paper is to compare radar backscatter response from imaging SAR systems operating in C-, L- and P-band wavelengths over wetland environments found in the Kakadu World Heritage Region, Northern Territory, Australia. Determining the spatial pattern of inundation in monsoonally domination wetlands and the sequence of floodplain drying is an important first step to understanding the hydrologic, geomorphic and ecological processes operating in these landscapes. SIR-C data acquired in 1994 and AIRSAR multiband imagery obtained over the study site in October 1993 and again in November 1996 were available for analysis along with MOMS-2P optical data. Radarsat imagery was acquired on a near monthly basis during 1998 for the study site. The data were calibrated, geo-referenced and overlain in order to determined water boundaries and to map the pattern of receding water levels. Both Standard Beam 4 and ScanSAR data has been analysis to evaluate the usefulness of C-band horizontally polarised data for wetland mapping. The identification of saturated condition under open canopies commonly found in Australian monsoonal forests can be demonstrated at all three wavelengths. Significantly multirate radarsat imagery proved used in detecting the distribution and extent of water under trees in all seasonal conditions; in mapping the pattern of floodwater recession and in assessing the drying out phases observed in this wetland environment.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117048506","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: 2