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Minimum volume simplicial enclosure for spectral unmixing of remotely sensed hyperspectral data 用于遥感高光谱数据光谱分解的最小体积简易外壳
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649694
E. Hendrix, I. García, J. Plaza, A. Plaza
{"title":"Minimum volume simplicial enclosure for spectral unmixing of remotely sensed hyperspectral data","authors":"E. Hendrix, I. García, J. Plaza, A. Plaza","doi":"10.1109/IGARSS.2010.5649694","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649694","url":null,"abstract":"Spectral unmixing is an important task for remotely sensed hyperspectral data exploitation. Linear spectral unmixing relies on two main steps: 1) identification of pure spectral constituents (endmembers), and 2) endmember abundance estimation in mixed pixels. One of the main problems concerning the identification of spectral endmembers is the lack of pure spectral signatures in real hyperspectral data due to spatial resolution and mixture phenomena happening at different scales. In this paper, we present a new method for endmember estimation which does not assume the presence of pure pixels in the input data. The method minimizes the volume of an enclosing simplex in the reduced space while estimating the fractional abundance of vertices in simultaneous fashion, as opposed to other volume-based approaches such as N-FINDR which inflate the simplex of maximumvolume that can be formed using available image pixels. Our experimental results and comparisons to other endmember extraction algorithms indicate promising performance of the method in the task of extracting endmembers from real hyperspectral data. In our experiments, we use laboratory-simulated forest scenes with known endmembers and fractional abundances due to their acquisition in a controlled environment using a real hyperspectral imaging instrument.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128621931","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
Spatial mapping of actual evapotranspiration and water deficit with MODIS products in the Songnen Plain, northeast China 基于MODIS产品的松嫩平原实际蒸散发和水分亏缺空间制图
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5651301
Lihong Zeng, K. Song, Bai Zhang, Zongming Wang
{"title":"Spatial mapping of actual evapotranspiration and water deficit with MODIS products in the Songnen Plain, northeast China","authors":"Lihong Zeng, K. Song, Bai Zhang, Zongming Wang","doi":"10.1109/IGARSS.2010.5651301","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5651301","url":null,"abstract":"Analysis of spatial patterns of evapotranspiration (ET) and water deficit (WD) is significant in the evaluation of crop growth status and water use efficiency for the Songnen Plain, an important commodity grain product base of China. Spatial patterns of ET and WD in the Songnen Plain of 2008 growing season (from May to September) were mapped by using MODIS products and meteorological data. The results indicated that ET and WD exhibited obvious spatial variation and gradually increased from southwest to east and northeast. Total ET over the Songnen Plain during the 2008 growing season ranged from 182.7mm to 1002.4mm with the mean value of 591.1mm, and WD ranged from −163.0mm to 645.9mm with the mean value of 195.9mm. Average ET and WD for different land covers varied significantly, water-body and wetlands obtained the highest ET and WD values, while grassland got the lowest ET and WD values. Through this study, it would provide some supports for the assessment of crop growth in arid environments of Songnen Plain.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640699","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
Bistatic scattering, backscattering and emissivities of randomly rough soil surfaces at L band based on numerical solutions of Maxwell equations of 3 Dimensional simulations 基于三维模拟Maxwell方程数值解的随机粗糙土壤表面L波段双基地散射、后向散射和发射率
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5651152
Shaowu Huang, L. Tsang
{"title":"Bistatic scattering, backscattering and emissivities of randomly rough soil surfaces at L band based on numerical solutions of Maxwell equations of 3 Dimensional simulations","authors":"Shaowu Huang, L. Tsang","doi":"10.1109/IGARSS.2010.5651152","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5651152","url":null,"abstract":"In this paper, we used NMM3D (Numerical Maxwell Model of 3 Dimensional simulations) to study the full wave 3 dimensional scattering of random soil surfaces. In 3D simulations, the height function z=f(x,y) of the rough surfaces vary in both two horizontal directions. Several hundreds of cases are simulated by varying incident angles, surface roughness and soil permittivities. The incident angles vary from 20° to 50°. The coherent/incoherent bistatic coefficients, backscattering coefficients, and emissivities are computed. The results are compared with empirical models and analytical methods. The backscattering coefficients are compared with measurement data and are found to be in good agreement. Based on the several hundreds of computed case, interpolation tables are made for the full range of parameters that can be directly applied to L band active and passive microwave remote sensing of soil moisture, such as the SMAP Mission and the SMOS Mission.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129049795","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
Fully polarimetric ALOS PALSAR data applications for snow and ice studies 全偏振ALOS PALSAR数据应用于冰雪研究
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649401
G. Venkataraman, Gulab Singh, Y. Yamaguchi
{"title":"Fully polarimetric ALOS PALSAR data applications for snow and ice studies","authors":"G. Venkataraman, Gulab Singh, Y. Yamaguchi","doi":"10.1109/IGARSS.2010.5649401","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649401","url":null,"abstract":"In this study, the capability assessment of fully polarimetric L-band ALOS PALSAR data has been carried out for snow discrimination from other targets. Eigenvaluve based polarization fraction value has been determined for assessing the capability of PALSAR data for snow discrimination. Radar snow index has been developed using polarization fraction and normalized third eigenvalue of coherency matrix. It has been found that radar snow index is more robust and simple to implement that supervised classification.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124610695","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
Performance verification and calibration of Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) 超导亚毫米波肢体发射测深仪(SMILES)性能验证与标定
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5654162
S. Ochiai, Y. Irimajiri, K. Kikuchi, T. Nishibori, T. Sano, R. Sato, T. Manabe, H. Ozeki, M. Shiotani
{"title":"Performance verification and calibration of Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES)","authors":"S. Ochiai, Y. Irimajiri, K. Kikuchi, T. Nishibori, T. Sano, R. Sato, T. Manabe, H. Ozeki, M. Shiotani","doi":"10.1109/IGARSS.2010.5654162","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5654162","url":null,"abstract":"Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) has been operated on orbit since late September 2009. The on-orbit performance of the SMILES submillimeter receiver satisfied the specifications and demonstrated a high capability of superconducting technology for atmospheric science by providing an invaluable low-noise atmospheric limb-emission spectral data in 640-GHz band. The accuracy of the limb spectral data are going to be improved by radiometric calibration based on the instrumental knowledge measured on the ground and measurements on orbit. The observation by SMILES was unfortunately halted because of a failure of the submillimeter-wave local oscillator on 21 April 2010.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"29 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124637073","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: 3
Reuse of software assets for the NASA Earth science decadal survey missions NASA地球科学十年调查任务的软件资产重用
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5653018
C. Mattmann, R. Downs, J. Marshall, Neal F. Most, S. Samadi
{"title":"Reuse of software assets for the NASA Earth science decadal survey missions","authors":"C. Mattmann, R. Downs, J. Marshall, Neal F. Most, S. Samadi","doi":"10.1109/IGARSS.2010.5653018","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5653018","url":null,"abstract":"Software assets from existing Earth science missions can be reused for the new decadal survey missions that are being planned by NASA in response to the 2007 Earth Science National Research Council (NRC) Study. The new missions will require the development of software to curate, process, and disseminate the data to science users of interest and to the broader NASA mission community. In this paper, we discuss new tools and a blossoming community that are being developed by the Earth Science Data System (ESDS) Software Reuse Working Group (SRWG) to improve capabilities for reusing NASA software assets.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129656571","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: 8
Log-polar and polar image for recognition targets 对数极坐标和极坐标图像用于识别目标
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5652527
A. Toumi, A. Khenchaf
{"title":"Log-polar and polar image for recognition targets","authors":"A. Toumi, A. Khenchaf","doi":"10.1109/IGARSS.2010.5652527","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5652527","url":null,"abstract":"We describe in this paper, data processing algorithms applied on radar image in order to extract feature descriptors and then to perform recognition task. Several kinds of descriptors can be used to acquire information about target characteristics from radar images such as ISAR (Inverse Synthetic Aperture Radar) images. This paper presents two types of vector descriptors extracted via two minds of transformed images so-called polar and log-polar images obtained respectively from the polar and log-polar mapping. In order to guarantee the invariance of some geometrical transformation, additional processing are proposed. In this paper, we present the polar and log-polar transformations and then the classification scheme adapted on correspondent polar and log-polar templates. In the classification step, log-polar and polar mapping results are compared using adapted classification scheme.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129919564","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: 6
Comparison of global land cover products: community remote sensing to validate areas of high disagreement 全球土地覆盖产品的比较:社区遥感以验证高度不一致的地区
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5652081
S. Fritz, I. Mccallum, L. See, F. Kraxner, M. Obersteiner
{"title":"Comparison of global land cover products: community remote sensing to validate areas of high disagreement","authors":"S. Fritz, I. Mccallum, L. See, F. Kraxner, M. Obersteiner","doi":"10.1109/IGARSS.2010.5652081","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5652081","url":null,"abstract":"Maps of global land cover derived from satellite-based earth observation have existed for almost two decades and represent one of the most important sources of baseline terrestrial information for a wide variety of users, e.g. the Convention on Biological Diversity. More importantly, land cover maps provide critical input data for global models of land use and land use changes [1]. Urgent questions have arisen that depend upon an accurate global land cover dataset, e.g. how much land is available for agricultural use or how high will competition for land be between food and bioenergy, considering increasing needs in the future. Some of these questions could be answered if a global baseline map of land cover would exist. However, at present, a unified and satisfactory solution has not surfaced, owing in part to large disagreements among existing global land cover datasets.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126799398","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
C- and Ku-band (at 5.6GHz and 13.6GHz), dual-frequency, multi-polarization, short pulse, combined scatterometer-radiometer system for low altitude platform, vessel and aircraft applications C波段和ku波段(5.6GHz和13.6GHz)，双频，多极化，短脉冲，低空平台，船舶和飞机应用的散射辐射计组合系统
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5651415
A. Arakelyan, A. Hambaryan, V. Karyan, G. Hovhannisyan, M. Grigoryan, A. Arakelyan, M. Simonyan, T. Poghosyan, N. Poghosyan
{"title":"C- and Ku-band (at 5.6GHz and 13.6GHz), dual-frequency, multi-polarization, short pulse, combined scatterometer-radiometer system for low altitude platform, vessel and aircraft applications","authors":"A. Arakelyan, A. Hambaryan, V. Karyan, G. Hovhannisyan, M. Grigoryan, A. Arakelyan, M. Simonyan, T. Poghosyan, N. Poghosyan","doi":"10.1109/IGARSS.2010.5651415","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5651415","url":null,"abstract":"In this paper C-, and Ku-band, dual frequency, multi-polarization, combined, short-pulse scatterometer-radiometer system is described, for short (from low altitude platform), middle (from vessel) and long (from aircraft) distance remote sensing applications for water surface, soil and land snow cover's microwave reflective and emissive characteristics simultaneous and spatially coincident measurements.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129194204","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
Bistatic SAR tomography: Processing and experimental results 双基地SAR层析成像:处理和实验结果
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649760
S. Duque, P. López-Dekker, J. C. Merlano, J. Mallorquí
{"title":"Bistatic SAR tomography: Processing and experimental results","authors":"S. Duque, P. López-Dekker, J. C. Merlano, J. Mallorquí","doi":"10.1109/IGARSS.2010.5649760","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649760","url":null,"abstract":"This paper presents across-track tomography applied to a bistatic geometry with fixed receivers. This kind of geometry can overcome some of the classical monostatic tomography limitations such as temporal decorrelation and irregular baseline distribution. The Remote Sensing Laboratory (RSLab) of the Universitat Politècnica de Catalunya (UPC) has implemented a SAR Bistatic Receiver for INterferometric Applications, SABRINA, with 4-channels. SABRINA has been used to carry out a bistatic tomographic experiment. The acquired data has been processed with different tomographic methods and their performances compared.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129207362","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
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