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2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)最新文献

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New possibilities of the use of synthetic aperture millimeter-wave radiometric interferometer for precipitation remote sensing from space 利用合成孔径毫米波辐射干涉仪进行空间降水遥感的新可能性
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185241
B. Kutuza
{"title":"New possibilities of the use of synthetic aperture millimeter-wave radiometric interferometer for precipitation remote sensing from space","authors":"B. Kutuza","doi":"10.1109/MICRORAD.2012.6185241","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185241","url":null,"abstract":"Results of computer simulation of the microwave upwelling emission polarization effect of a precipitating atmosphere are presented in this paper. Ground - based measurements of second and third Stokes parameters were used for model calculations. It is shown that the second Stokes parameter of brightness temperature of a precipitating atmosphere measured from space can reach from 3 to 5 K. It is necessary to improve essentially the spatial resolution of microwave radiometers to use the polarization effect for interpretation of satellite data.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115095265","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 simulation tool for assessing the influence of atmospheric turbulence in a Media Calibration System 一种评估介质校准系统中大气湍流影响的模拟工具
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185260
A. Graziani, P. Tortora, A. Martellucci, G. Elgered, M. Mercolino, P. Jarlemark
{"title":"A simulation tool for assessing the influence of atmospheric turbulence in a Media Calibration System","authors":"A. Graziani, P. Tortora, A. Martellucci, G. Elgered, M. Mercolino, P. Jarlemark","doi":"10.1109/MICRORAD.2012.6185260","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185260","url":null,"abstract":"Turbulence is an important effect for different applications including different aspects of electromagnetic propagation in the atmosphere, especially for frequencies in the microwave part of the spectrum. Our parameter of interest is an integrated effect, namely the propagation delay of a signal propagating through the Earth's atmosphere to a receiver on the ground. A simulation method has been implemented in order to predict the statistics of atmospheric turbulence. For systems where calibration for the wet delay is done by means of radiometric measurements there is an uncalibrated remainder of the variability due to imperfections of the method: (1) the radiometer location, which may not be identical to the location of the receiving antenna that is subject to calibration, (2) a pointing offset on the sky, and (3) the radiometer beam that may sense another volume of the air than does the original signal. The size of the remainder depends on the assumptions made about the atmospheric variability when the instrument is calibrated. The analysis shows that the overall performance of the system to a significant level depends on the uncertainty in the true range of variation for the turbulence strength parameter Cn2.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133943779","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
Monitoring of soil moisture using a microwave based variational wetness index 基于微波变分湿度指数的土壤湿度监测
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185233
T. Lacava, M. Faruolo, N. Pergola, M. Temimi, R. Khanbilvardi, I. Coviello, V. Tramutoli, D. Wang
{"title":"Monitoring of soil moisture using a microwave based variational wetness index","authors":"T. Lacava, M. Faruolo, N. Pergola, M. Temimi, R. Khanbilvardi, I. Coviello, V. Tramutoli, D. Wang","doi":"10.1109/MICRORAD.2012.6185233","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185233","url":null,"abstract":"Satellite data have been largely used to detect and monitor flooding events. In particular, data acquired by passive radiometers were recognized as the most adequate to this aim, thanks to their suitable trade-off between temporal and spatial resolution. In this work, nine years of data acquired by the Advanced Microwave Scanning Radiometer (AMSR-E) aboard Earth Observing System (EOS) Aqua, have been investigated by means of the Robust Satellite Techniques (RST) approach, implementing a robust indicator of soil moisture variation, the Polarization Ratio Variation Index (PRVI). Such an index has been applied to analyze the flood which hit Pakistan during summer 2010. Preliminary results shown in this study demonstrated the potential of such an index in providing reliable information about the presence of extremely wet soils, especially when low frequency AMSR-E channels are used.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130546048","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
New improved algorithm for sky calibration of L-band radiometers JÜLBARA and ELBARA II l波段辐射计天空定标新改进算法JÜLBARA与ELBARA II
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185259
M. Dimitrov, K. Kostov, F. Jonard, K. Jadoon, M. Schwank, L. Weihermuller, N. Hermes, J. Vanderborght, H. Vereecken
{"title":"New improved algorithm for sky calibration of L-band radiometers JÜLBARA and ELBARA II","authors":"M. Dimitrov, K. Kostov, F. Jonard, K. Jadoon, M. Schwank, L. Weihermuller, N. Hermes, J. Vanderborght, H. Vereecken","doi":"10.1109/MICRORAD.2012.6185259","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185259","url":null,"abstract":"We propose a new algorithm for sky calibration of the L-band radiometers JÜLBARA and ELBARA II, introducing the effective transmissivities of the instruments. The suggested approach was tested using experimental data obtained at the Selhausen test site, Germany. It was shown that for JÜLBARA the effective transmissivities depend strongly on the air temperature and decrease with increasing air temperature, while for ELBARA II such strong dependence was not observed. It was also shown that the effective transmissivities account for the antenna and feed cable loss effects, and for the variations of the radiometer gain due to air temperature changes. The new calibration algorithm reduces significantly the bias of brightness temperature estimates for both radiometers, especially for JÜLBARA.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123774313","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
RFI detected by kurtosis and polarimetry: Performance comparison based on airborne campaign data 峰度和偏振法检测RFI:基于机载战役数据的性能比较
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185255
J. Balling, S. Sobjaerg, S. Kristensen, N. Skou
{"title":"RFI detected by kurtosis and polarimetry: Performance comparison based on airborne campaign data","authors":"J. Balling, S. Sobjaerg, S. Kristensen, N. Skou","doi":"10.1109/MICRORAD.2012.6185255","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185255","url":null,"abstract":"Leading up to the ESA Soil Moisture and Ocean Salinity (SMOS) mission, a series of campaigns have taken place, including airborne L-band radiometer measurements using the EMIRAD-2 radiometer - a fully polarimetric radiometer with Radio Frequency Interference (RFI) detection capabilities by means of the kurtosis method. An RFI detection scheme combining kurtosis and polarimetry has been evaluated, and it has been established that the two methods complement each other well. Following the addition of a digital filter bank to the radiometer system, a new RFI detection scheme has been developed and tested. The RFI removal capabilities of the two detection schemes are similar, however, the new detection scheme results in fewer data samples being discarded due to RFI.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123258049","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
Characterization of the spatial and temporal stability of the east-antarctic plateau in the low-microwave bands 南极东部高原低微波波段时空稳定性特征
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185251
G. Macelloni, M. Brogioni, R. Rahmoune
{"title":"Characterization of the spatial and temporal stability of the east-antarctic plateau in the low-microwave bands","authors":"G. Macelloni, M. Brogioni, R. Rahmoune","doi":"10.1109/MICRORAD.2012.6185251","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185251","url":null,"abstract":"With the development of new low frequency satellite radiometers the characterization of the emission of the East Antarctic plateau become important for cal/val purposes. Also, the availability of further data open new horizons in the understanding of the climate processes of the continent. In this work we analyze the spatial homogeneity and the temporal stability of the east Antarctic plateau at C- and L-band by using a the modified absolute distance metric. Finally we were able to detect some promise areas in the Ridge and Dome C region which seems to be spatially homogeneous and temporally stable.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128052482","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: 5
Performance of a spatial error correction technique in SMOS brightness temperature images SMOS亮度温度图像的空间误差校正技术
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185262
Wu Lin, F. Torres, I. Corbella, N. Duffo, M. Martín-Neira
{"title":"Performance of a spatial error correction technique in SMOS brightness temperature images","authors":"Wu Lin, F. Torres, I. Corbella, N. Duffo, M. Martín-Neira","doi":"10.1109/MICRORAD.2012.6185262","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185262","url":null,"abstract":"Soil Moisture and Ocean Salinity (SMOS) brightness temperature synthesized images are obtained after a comprehensive calibration and error correction procedure. However, the final images are still contaminated by small but non-negligible spatial errors: the so-called pixel bias. These errors have been found to be very stable in the SMOS Alias-Free Field of View (AF-FoV) and can be mitigated, to a large extent, by applying a multiplicative mask to the measured brightness temperatures at the antenna plane. This paper describes the procedure to upgrade this mask to cover SMOS Extended AF-FoV.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122202888","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: 5
Rainy events detection by means of observed brightness temperature ratio 利用观测到的亮温比探测雨事件
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185244
A. Bosisio, P. Ciotti, E. Fionda, A. Martellucci
{"title":"Rainy events detection by means of observed brightness temperature ratio","authors":"A. Bosisio, P. Ciotti, E. Fionda, A. Martellucci","doi":"10.1109/MICRORAD.2012.6185244","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185244","url":null,"abstract":"This paper presents the results of a study aiming at detecting rainy data in measurements collected by a dual band ground-based microwave radiometer. The proposed criterion is based on the sky status indicator (SSI) derived from brightness temperatures observed in the 20-30 GHz band without need of any ancillary information. A major result obtained from the CDF of almost three months of data is the identification of threshold values of SSI between clear sky, cloudy sky and rainy sky, respectively. As measurements were taken at elevation angle equal to 90°, these values need to be confirmed. Nevertheless, the threshold values between clear/cloudy sky (SSI equal to 0.5) and cloudy/rainy sky (SSI equal to 0.9) are in agreement with previous pilot experiments.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114997761","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: 7
Effective albedo of vegetated terrain at L-band 植被地形l波段有效反照率
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185252
M. Kurum, P. O’neill, R. Lang
{"title":"Effective albedo of vegetated terrain at L-band","authors":"M. Kurum, P. O’neill, R. Lang","doi":"10.1109/MICRORAD.2012.6185252","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185252","url":null,"abstract":"This paper derives an explicit expression for an effective albedo of vegetated terrain from the zero- and multiple-order radiative transfer model comparison. The formulation establishes a direct physical link between the effective vegetation parameterization and the theoretical description of absorption and scattering within the canopy. The paper presents an evaluation of the derived albedo for corn canopies with data taken during an experiment at Alabama A&M Winfield A. Thomas Agricultural Research Station near Huntsville, Alabama in June, 1998. The fields were observed with a truck-mounted L-band radiometer at horizontal polarization and incident angle of 15° for the period of two weeks. Ground truth data, including careful characterization of the corn size and orientation statistics, were also collected and used to simulate the effective albedo of the vegetation. It is shown that the effective albedo differs from the single-scattering albedo by definition. While the single-scattering albedo represents single-scattering properties of vegetation elements only, the effective albedo takes into account of all the processes taking place within the canopy, including multiple-scattering. The simulation results are in good agreement with the data and show that the effective albedo values increase monotonically as soil moisture increases.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133074974","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
Stability of the MIRAS amplitude calibration MIRAS振幅校准的稳定性
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2012-03-05 DOI: 10.1109/MICRORAD.2012.6185235
I. Corbella, F. Torres, N. Duffo, M. Martín-Neira
{"title":"Stability of the MIRAS amplitude calibration","authors":"I. Corbella, F. Torres, N. Duffo, M. Martín-Neira","doi":"10.1109/MICRORAD.2012.6185235","DOIUrl":"https://doi.org/10.1109/MICRORAD.2012.6185235","url":null,"abstract":"Efficient methods to characterize and mitigate long-and short- term drifts in SMOS data have been developed after careful analysis of the external and internal calibration parameters and by accurate modeling of the individual receiver front-ends. A method to characterize this drift has been successfully developed and used to reduce the measured antenna temperature variations.","PeriodicalId":122743,"journal":{"name":"2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129647641","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
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