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Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning 2000 - 2007年阿拉斯加ALECTRA站点景观冻融状态的快速后向散射灵敏度:在SMAP验证规划中的应用
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5652955
A. Colliander, K. McDonald, R. Zimmermann, Thomas Linke, R. Schroeder, J. Kimball, E. Njoku
{"title":"Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning","authors":"A. Colliander, K. McDonald, R. Zimmermann, Thomas Linke, R. Schroeder, J. Kimball, E. Njoku","doi":"10.1109/IGARSS.2010.5652955","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5652955","url":null,"abstract":"The mapping of freeze/thaw state of the landscape is one of the main objectives of NASA's upcoming SMAP (Soil Moisture Active and Passive) mission. This study applies ALECTRA (Alaska Ecological Transect) biophysical network and QuikSCAT scatterometer data to evaluate some of the validation issues regarding the SMAP freeze/thaw measurements. Although the QuikSCAT data is at Ku-band frequency, rather than the L-band of the SMAP instrument, the data is utilized due to its uniquely high temporal resolution over the ALECTRA sites. The results show that multiple temperature measurements representative of individual landscape (soil, snow cover, vegetation and atmosphere) elements and spatial heterogeneity within the satellite field-of-view are important for understanding the radar backscatter process and aggregate freeze/thaw signal. The backscatter temporal dynamics and relative contribution of these landscape elements to the freeze-thaw signal varies with land cover type, seasonal weather and climate conditions.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"20 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":"129419380","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
Model-based estimation of surface geometry using passive polarimetric imaging 基于模型的被动极化成像表面几何估计
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5653906
C. Creusere, Ketan Mehta, D. Voelz
{"title":"Model-based estimation of surface geometry using passive polarimetric imaging","authors":"C. Creusere, Ketan Mehta, D. Voelz","doi":"10.1109/IGARSS.2010.5653906","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5653906","url":null,"abstract":"Imaging polarimetry has emerged as a powerful tool for application in the field of remote sensing. In this paper, we present a novel technique for estimating the surface normal angle of each of the individual facets of a target object using passive polarimetric data. The passive polarimetric imaging system described here uses multiple measurements of the output Stokes vectors along with the reflection Mueller matrix, to extract the surface normal angle corresponding to individual facets of the target object. The knowledge of this parameter is indispensable for determining the orientation and surface geometry of the target object and thus facilitates applications like object recognition, shape extraction and building scene geometry. The worst-case error is found to be less than 2%, based on Monte Carlo computer simulation results.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"12383 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":"129688299","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
A novel classification processing based on the spatial information and the concept of Adaboost for hyperspectral image classification 一种基于空间信息和Adaboost概念的高光谱图像分类方法
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5650388
Bor-Chen Kuo, Shih-Syun Lin, Huey-Min Wu, Chun-Hsiang Chuang
{"title":"A novel classification processing based on the spatial information and the concept of Adaboost for hyperspectral image classification","authors":"Bor-Chen Kuo, Shih-Syun Lin, Huey-Min Wu, Chun-Hsiang Chuang","doi":"10.1109/IGARSS.2010.5650388","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5650388","url":null,"abstract":"In this paper, a novel classification processing based on the spatial information and the concept of Adaboost for hyperspectral image classification is proposed. This classification process is named as adaptive feature extraction with spatial information (AdaFESI). The main idea is adaptive in the sense that subsequent feature spaces are tweaked in favor of those instances misclassified by spectral or spatial classifiers in the previous feature space. All training samples are projected into these feature spaces to train various classifiers and then constitute a multiple classifier system. The experimental results based on two hyperspectral data sets show that the proposed algorithm can generate better classification results.","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":"129753102","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
Aerosol optical thickness from modis data at 500M resolution for two extreme aerosol events analysis 用500米分辨率modis资料分析两个极端气溶胶事件的气溶胶光学厚度
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649324
Y. Wang, Yong Xue, J. Guang, Yingjie Li, L. Mei, Hui Xu, Jianwen Ai, Qiang Li
{"title":"Aerosol optical thickness from modis data at 500M resolution for two extreme aerosol events analysis","authors":"Y. Wang, Yong Xue, J. Guang, Yingjie Li, L. Mei, Hui Xu, Jianwen Ai, Qiang Li","doi":"10.1109/IGARSS.2010.5649324","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649324","url":null,"abstract":"In addition to climate-related processes, aerosol effects are also enormous in regional/local atmospheric phenomena. Fine resolution satellite data can be used to provide a macro-view of extreme aerosol events. The Aerosol Optical Thickness (AOT) for two extreme aerosol events were retrieved with spatial resolution 500m over East of China and Washington state, USA, respectively. Validation confirms that the retrieval would be trustable to some extent. Retrieved AOT at 500m resolution, NASA's AOT products from MODIS data at 10km resolution and NASA's snapshot views are utilized to analyze these two extreme aerosol events. Retrieved AOT maps at 500m resolution reveal much of the tendency and are smoother, which would be complementary to NASA products.","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":"129864963","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
Comparison of needleleaf deciduous forest and needleleaf evergreen forest in the GLCNMO with IGBP discover and GLC2000 product 利用IGBP发现和GLC2000产品比较GLCNMO针叶落叶林和针叶常绿林
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5651660
G. Tana, H. Letu, B. Erdenee, R. Tateishi
{"title":"Comparison of needleleaf deciduous forest and needleleaf evergreen forest in the GLCNMO with IGBP discover and GLC2000 product","authors":"G. Tana, H. Letu, B. Erdenee, R. Tateishi","doi":"10.1109/IGARSS.2010.5651660","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5651660","url":null,"abstract":"The Global Land Cover by National Mapping Organizations (GLCNMO) is the product of the Global Mapping Project organized by International Steering Committee for Global Mapping (ISCGM). The GLCNMO is a global 1km land cover data set produced by 16-day composite MODIS data observed in 2003. The accuracy assessment of the map has been completed by a stratified random sampling method. The overall accuracy is 76.5%. The accuracy assessment result also shows that the needleleaf evergreen forest and the needleleaf deciduous forest were misclassified into each other. With this problem in mind, Needleleaf evergreen forest and Needleleaf deciduous forest in the GLCNMO were selected for reclassification. In the new classification process, the NDVI patterns were used. Finally, the needleleaf evergreen forest and the needleleaf deciduous forest in the GLCNMO were compared with the same land cover types in other two global land cover products IGBP DISCover and GLC2000 from total pixel number, per-pixel and the ground truth data points of view.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"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":"129939454","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
A Ku-band rotating fan-beam scatterometer: Design and performance simulations ku波段旋转扇形波束散射计:设计与性能模拟
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5650797
Xiaolong Dong, Di Zhu, Wenming Lin, Heguang Liu, Jingshan Jiang
{"title":"A Ku-band rotating fan-beam scatterometer: Design and performance simulations","authors":"Xiaolong Dong, Di Zhu, Wenming Lin, Heguang Liu, Jingshan Jiang","doi":"10.1109/IGARSS.2010.5650797","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5650797","url":null,"abstract":"This paper introduces the design and simulation results of a Ku-band rotating fan-beam radar scatterometer for ocean surface wind vector measurement. It will be flown on a small satellite dedicated to provide data for investigation of the ocean wave and ocean surface wind vector interactions, along with another payload for measurement of directional ocean wave spectra by a real-aperture radar with multiple scanned pencil beams. Key issues about the design of a Ku-band rotating fan-beam radar scatterometer, and results of performance simulations are provided as well. The performance of the system is simulated by the absolute and relative specifications. For the absolute specifications, retrieval performances for both wind speed and wind direction are evaluated, with the maximum likelihood method being employed. For the relative specifications, the figures of merit (FOM) is simulated, for comparison with other Ku-band scatterometers and optimization of system parameters. Simulation results of both the σ° precision and wind retrieval accuracies for different wind speed from 4m/s to 24m/s will be provided, which shows that SCAT can satisfy the performance requirements within most part of the swath.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"7 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":"128422727","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: 19
Noise-robust subband decomposition blind signal separation for hyperspectral unmixing 用于高光谱解混的噪声鲁棒子带分解盲信号分离
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649568
Y. Qian, Qi Wang
{"title":"Noise-robust subband decomposition blind signal separation for hyperspectral unmixing","authors":"Y. Qian, Qi Wang","doi":"10.1109/IGARSS.2010.5649568","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649568","url":null,"abstract":"Hyperspectral unmixing can be considered as a blind source separation (BSS) and/or independent component analysis (ICA) problem. This paper presents a new noise-resistant subband decomposition BSS/ICA approach for hyperspectral unmixing. Subband decomposition BSS relaxes the assumption that the source signals are mutual independent, which has been proved successful in some BSS applications. However, the existing subband decomposition and subband selection methods emphasize the “independence” of sub-components, but ignore the impact of their “noise”. It is well known that most subband decomposition such as wavelet and fourier transforms have been successfully used for noise removal, so simultaneously considering independence and noise through subband decomposition is possible. In this paper, we propose wavelet package transform for subband decomposition, independence-and-noise joint measure based ranking method for subband selection. The experimental results indicate that the proposed methods are promising in hyperspectral unmixing.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"93 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":"128458994","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
Airborne DInSAR time series at X-Band x波段机载DInSAR时间序列
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5653246
S. Perna, C. Wimmer, J. Moreira, G. Fornaro
{"title":"Airborne DInSAR time series at X-Band","authors":"S. Perna, C. Wimmer, J. Moreira, G. Fornaro","doi":"10.1109/IGARSS.2010.5653246","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5653246","url":null,"abstract":"Differential SAR Interferometry (DInSAR) is a remote sensing technique which allows monitoring ground deformation with accuracy of the order of the transmitted wavelength by exploiting the phase difference (interferogram) of two temporally separated SAR images relevant to the same area.","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":"128752609","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
Performance evaluation of spectral indices to estimate equivalent water thickness 估算等效水厚度的光谱指标性能评价
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5649795
Jianjun Wu, Jie Zhang, Lei Zhou, Jianliang Nie
{"title":"Performance evaluation of spectral indices to estimate equivalent water thickness","authors":"Jianjun Wu, Jie Zhang, Lei Zhou, Jianliang Nie","doi":"10.1109/IGARSS.2010.5649795","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5649795","url":null,"abstract":"Water is important for the growth of plants. In agriculture, Equivalent Water Thickness (EWT) is commonly used to express vegetation moisture status. Due to its simplicity, spectral indices are widely used for EWT prediction in the operational context. Currently, many indices have been proposed for estimating EWT. However, the performances of spectral indices may vary under different conditions. In this paper, we mainly investigated the performances of five spectral indices for determination of EWT with different variations and at different water levels. According to the results, all five spectral indices show good estimation for EWT with a large variation; with the decrease of sample variations, the performances of all spectral indices decline; and the strengths of spectral indices for EWT estimation vary at different water levels. Generally, the performances of spectral indices show a declining tendency as EWT increases. Of five indices, MSI produces the best estimation for low-level and medium-level EWT and WI performs best for estimating high-level EWT.","PeriodicalId":406785,"journal":{"name":"2010 IEEE International Geoscience and Remote Sensing Symposium","volume":"31 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":"128250982","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
Development and experiments of a passive SAR receiver system in a bistatic spaceborne/stationary configuration 星载/静止双基地被动SAR接收系统的研制与实验
2010 IEEE International Geoscience and Remote Sensing Symposium Pub Date : 2010-07-25 DOI: 10.1109/IGARSS.2010.5653797
Simon Reuter, F. Behner, H. Nies, O. Loffeld, D. Matthes, J. Schiller
{"title":"Development and experiments of a passive SAR receiver system in a bistatic spaceborne/stationary configuration","authors":"Simon Reuter, F. Behner, H. Nies, O. Loffeld, D. Matthes, J. Schiller","doi":"10.1109/IGARSS.2010.5653797","DOIUrl":"https://doi.org/10.1109/IGARSS.2010.5653797","url":null,"abstract":"In this paper, the development of a stationary SAR receiver system using TerraSAR-X as transmitter is described. First the bistatic geometry and expected resolution are considered. After giving an overview of the hardware setup, the expected performance of the system is evaluated. The paper ends with the processed results of a measurement campaign performed in summer and fall 2009, and a comparison with the monostatic data acquired by the TerraSAR-X satellite.","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":"128487640","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: 31
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