IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)最新文献
{"title":"A novel algorithm for reconstructing three-dimensional target shapes using sequential radar images","authors":"M. Iwamoto, T. Kirimoto","doi":"10.1109/IGARSS.2001.977008","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.977008","url":null,"abstract":"Inverse synthetic aperture radar (ISAR) is one of the radar techniques used to observe two dimensional images of a remotely based target using radio waves. Since the \"cross range\" vector is ambiguous, estimating the three-dimensional shape of the target is difficult. However, it is possible to estimate the three-dimensional shape using moving pictures taken by a video camera, if the relative movement between the camera and the target is known. In this paper we propose an algorithm for reconstructing three-dimensional shape of the target by applying a similar technique to the ISAR images. The theory and the required condition of the proposed method are described and some results obtained by the computer simulations are shown.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"108 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123233864","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}
{"title":"Resolution improvement via multipass SAR imaging","authors":"G. Fornaro, V. Pascazio, Gilda Schirinzi","doi":"10.1109/IGARSS.2001.978145","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.978145","url":null,"abstract":"We investigate the possibility to exploit coherent SAR multi-acquisition to improve the system range resolution. The problem is formulated in the signal statistical estimation framework, where the space invariant and space variant case are addressed. Numerical experiments on simulated data are shown.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123370292","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}
{"title":"Remote sensing investigation of the main sand-supplying areas of dust storm hitting northern China","authors":"Z. Guoping, Liu Jiyuan, Zhang Zenxiang","doi":"10.1109/IGARSS.2001.977915","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.977915","url":null,"abstract":"Based on the national sand dust storm data dated from 1951 to 1980, the distributions of sand dust storm-influenced areas that total 440/spl times/10/sup 4/ km/sup 2/ are analyzed. The number of dust storm days in a year is used as an indicator, by which five heavy dust storm regions are marked off. The main trajectories of the sand dust storm are traced to derive the position of main storm hit region using the meteorological data dated from 1971-1996. Then the nationally remote sensing investigation of wind erosion is carried out. Total area of wind erosion is 228/spl times/10/sup 4/ km/sup 2/, accounting 23.8% of the whole country area. Comparison of the data of sand dust storm with that of wind erosion shows that all wind erosion places fall in the sand dust storm-influenced areas. With the strengthening of the soil erosion, the number of dust storm days in a year also increases. The windily eroded areas can be perceived as the source areas that are supplying sand for the dust storm. The land use of the sand supplying area is discussed. And their contribution to the sand dust storm is probed. The main areas that supply sand for the sand dust storms are mostly bare land and heavily desertified land, accounting 59.5% of total sand supplying areas. Occupying 30.4% of the total sand-supplying region, nearly 75/spl times/10/sup 4/ km/sup 2/ grassland is providing sand for the sand dust storm, equaling to 38% of all grassland of China, most of which are over-grazed. Moreover almost 5.2% eroded area of the sand source region is cropland.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123379867","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}
{"title":"Alpine snow cover and glaciers in relation to altitude from advanced satellite monitoring","authors":"K. Seidel, J. Schaper, J. Martinec","doi":"10.1109/IGARSS.2001.976692","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976692","url":null,"abstract":"Advanced methods of Landsat-TM data processing were used to map periodically the seasonal snow cover and glaciers. The test basins are located in western, eastern and southern Swiss Alps. In the basins of the rivers Rhone at Sion (3371 km/sup 2/, 488-4634 in a.s.l.), Rhine at Felsberg (3249 km/sup 2/ 562-3614 in a.s.l.) and Ticino at Bellinzona (1515 km/sup 2/, 220-3402 in a.s.l.) relations were derived between the snow coverage and altitude at different stages of the snowmelt season. From these curves, the snow coverage at a desired altitude and the elevation of the statistical snow line at different dates can be read off. The decrease of the areal extent of snow on glaciers is slower in comparison with glacier-free areas. The snow line in the basin Rhone-Sion is lower than in the other basins throughout the season. Precision snow cover mapping and an adequate evaluation of data are needed for runoff modelling and winter tourism, in particular with regard to global warming.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123390507","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}
{"title":"Ortho-rectification software applicable for IKONOS high resolution images: GeoPixel-Ortho","authors":"C. Ahn, S. Cho, J. Jeon","doi":"10.1109/IGARSS.2001.976220","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976220","url":null,"abstract":"GeoPixel-Ortho as a value-added processing module for generating ortho-rectified images in GeoPixel which is in-house remote sensing software, is introduced. To estimate sensor orientation parameters, a direct linear transform (DLT) method was implemented. The module was tested on an IKONOS scene over the south part of Seoul, Korea. The accurate location of ground control points (GCPs) was obtained by using GPS receivers. Although it was hard to evaluate highly reliable sensor parameters using the DLT model because of a lack of sensor related information, the overall accuracy of horizontal error on the test area was estimated to be between 1 and 2 pixels. Further research on estimating more accurate sensor parameters to improve the performance of the DLT model will be done.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121320868","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}
{"title":"Determination of the corn hotspot diurnal and seasonal change by real scene models","authors":"Sun Lihong, L. Xiaowen","doi":"10.1109/IGARSS.2001.978032","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.978032","url":null,"abstract":"The corn hotspot dependence on its structure at various times in one day and various growth periods is investigated. We simulate the scattering of light in the canopy based on three dimensional corn canopies. Our approach consists of seven processes. Firstly, the biophysical parameters of corn, such as plant height, leaf base height, size of leaf, and shape of leaf, are measured on field, and the statistics of the parameters is obtained based on the measurement. Secondly, the three dimensional structure of single corn is re-built by the L-system and the statistics. Thirdly, the real pixel scene is configured according to the spatial pattern of corn in pixel, such as planting by row or by random distribution. Fourthly, hotspots are calculated by a light interception model under various viewing geometric conditions. Fifthly, the correlation of corn structure parameters and diurnal consecutive hotspots is evaluated, and key factors are sought. Sixthly, the correlation of corn structure parameters and seasonal consecutive hotspots also is evaluated, and key factors are sought. Lastly, the dependence of the key factors that form seasonal consecutive hotspots on the ones that form diurnal consecutive hotspots is estimated at various growth periods. We obtain key factors concerning consecutive hotspots. The result will improve our understanding about hotspots in Triana satellite data, and help us to use the data effectively.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121417532","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}
F. Wentz, Deborah Smith, Carl A. Mears, C. Gentemann
{"title":"Advanced algorithms for QuikScat and SeaWinds/AMSR","authors":"F. Wentz, Deborah Smith, Carl A. Mears, C. Gentemann","doi":"10.1109/IGARSS.2001.976752","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976752","url":null,"abstract":"QuikScat is providing scientists and weather forecasters with an unprecedented view of ocean winds at a 25-km resolution. With a typical accuracy of 1 m/s in speed and 15/spl deg/ in direction, the retrieved wind vectors are being used for a number of important oceanographic and air/sea interaction studies. We present work on a QuikScat wind-vector retrieval algorithm that contains a number of advanced features, including: an updated geophysical model function (Ku-2001), a fully integrated stand-alone rain flag, and the capability to retrieve winds up to 70 m/s. In addition, the QuikScat data processing is done in parallel with our near-real-time operational data processing for SSM/I and TMI. In this way, an additional rain flag as well as a sea-ice flag (both based on the SSM/I and TMI observations) can be appended to the QuikScat wind vectors. We present results of two studies: (1) the capability for QuikScat to measure very high winds (>30 m/s) and (2) comparisons between scatterometer and radiometer wind speed retrievals (i.e. QuikScat versus TMI). These investigations are leading towards a combined SeaWinds-AMSR algorithm for ADEOS-2, which will ingest both scatterometer and radiometer observations to obtain more accurate wind vectors and sea-surface temperatures.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116356174","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}
R. Bartolo, J. Forner, D. Bell, C. Menges, G. Hill
{"title":"The fusion of polarimetric AirSAR data with digital aerial photography to improve aquatic macrophtye classification in a tropical reservoir","authors":"R. Bartolo, J. Forner, D. Bell, C. Menges, G. Hill","doi":"10.1109/IGARSS.2001.976862","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976862","url":null,"abstract":"Previous attempts to map wetland environments in northern Australia using optical satellite sensors have highlighted the difficulties in mapping the vegetation in these systems using remotely sensed data. Recently, more promising results have been achieved through the use of polarimetric AirSAR obtained during the 1996 PACRIM campaign. The mapping has been conducted on a tropical floodplain containing a reservoir, Fogg Dam, that is characterised by a permanent water supply. A maximum likelihood supervised classification was implemented on four data sets: CIR photography; a Cloude decomposed 9 band AirSAR image; the optimum 3 band combination Cloude decomposed image; and the fused data. The macrophtye classification was improved when utilising AirSAR data, with the 3 band decomposed image yielding the most accurate results.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116499537","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}
T. H. V. Haar, K. R. Dean, John M. Forsythe, T. J. Greenwald, S. Kidder
{"title":"Comparison of satellite and ground-based measurements of cloud liquid water in several climate zones","authors":"T. H. V. Haar, K. R. Dean, John M. Forsythe, T. J. Greenwald, S. Kidder","doi":"10.1109/IGARSS.2001.976603","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976603","url":null,"abstract":"We have illustrated some of the issues and considerations required to understand remotely sensed cloud liquid water. The ultimate use of the data must be considered, i.e. the spatial and temporal scales required. Future spaceborne active instruments such as CloudSat will add a new perspective on CLW.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121663695","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}
J. Mendenhall, D. Hearn, J. Evans, D.E. Lencioni, C.J. Digenis, R.D. Welsh
{"title":"Initial flight test results from the EO-1 Advanced Land Imager: radiometric performance","authors":"J. Mendenhall, D. Hearn, J. Evans, D.E. Lencioni, C.J. Digenis, R.D. Welsh","doi":"10.1109/IGARSS.2001.976207","DOIUrl":"https://doi.org/10.1109/IGARSS.2001.976207","url":null,"abstract":"The Advanced Land Imager (ALI) is one of three instruments flown on the first Earth Observing mission (EO-1) under NASA's New Millennium Program (NMP). The primary NMP mission objective is to flight-validate advanced technologies that will enable dramatic improvements in performance, cost, mass and schedule for future, Landsat-like, Earth remote sensing instruments. ALI contains a number of innovative features, including all the Category 1 technology demonstrations of the EO-1 mission. These include the basic instrument architecture which employs a push-broom data collection mode, a wide field of view optical design, compact multispectral detector arrays, non-cryogenic HgCdTe for the short wave infrared bands, silicon carbide optics and a multi-level solar calibration technique. The Earth Observing-1 spacecraft was successfully launched on November 21, 2000. During the first sixty days on orbit, several Earth scenes were collected and on-orbit calibration techniques were exercised by the Advanced Land Imager. This paper presents the status of ALI radiometric performance characterization obtained from the data collected during that period.","PeriodicalId":135740,"journal":{"name":"IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114830559","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}