IEEE International Geoscience and Remote Sensing Symposium

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Analysis of detailed in-situ soil measurements with ERS C-band radar backscattering data
IEEE International Geoscience and Remote Sensing Symposium - Tập 2 - Trang 1158-1160 vol.2
M. Borgeaud, M. Davidson, E. Attema, J. Louis, L. Dente, N. Floury, B.R. Tell
In order to improve a better quantitative understanding of the effect of soil moisture of bare soils on C-band SAR data, five dedicated "weather" stations with soil moisture probes, rain gauges, and temperature thermometers have been installed through the Flevoland test site (The Netherlands) since April 2000. In addition to the in-situ data, spaceborne SAR data at C-band measured by ERS-2 are als...... hiện toàn bộ
#Soil measurements #Radar measurements #Backscatter #Soil moisture #Spaceborne radar #Rain #Testing #Probes #Temperature #Transponders
Hyperspectral linear mixing based on in situ measurements in a coral reef environment
IEEE International Geoscience and Remote Sensing Symposium - Tập 1 - Trang 249-251 vol.1
H. Holden, E. LeDrew
With the benthic complexity common on a coral reef, there will always be subpixel mixing given the spatial resolution of contemporary satellite imagery. It therefore becomes important to determine how spectral components of a pixel combine to result in one integrated pixel value. To address this issue, pure endmember high spectral resolution measurements were taken in Buck Island Marine Park, off ...... hiện toàn bộ
#Spatial resolution #Hyperspectral imaging #Satellites #Signal resolution #Bleaching #Algae #Reflectivity #Signal analysis #Pixel #Image analysis
Double density wavelet transformation for speckle reduction of SAR images
IEEE International Geoscience and Remote Sensing Symposium - Tập 1 - Trang 113-115 vol.1
J.R. Sveinsson, J.A. Benediktsson
Discrete wavelet transformations (DWTs) based on oversampled filter banks, proposed by I. W. Selesnick (2001), are used for speckle reduction of SAR images. The oversampled DWT is called double density DWT (DD-DWT) and is based on a single scaling function (lowpass) and two distinct wavelet functions (highpass). The DD-DWT is useful for speckle reduction through its subband images and the speckle ...... hiện toàn bộ
#Speckle #Discrete wavelet transforms #Wavelet coefficients #Noise reduction #Filter bank #Additive noise #Cost function #Electronic mail #Chaos #Gaussian noise
AMSR/AMSR-E data utilization plan
IEEE International Geoscience and Remote Sensing Symposium - Tập 1 - Trang 16-17 vol.1
A. Shibata
Several types of browse images of Advanced Microwave Scanning Radiometer (AMSR) and AMSR-E will be available to the public use for purposes to observe storms, sea ice, and others. The AMSR/AMSR-E data will be also transferred to the Japan Meteorological Agency (JMA) for weather forecast, and to the Japan Fisheries Information Center (JAFIC) for marine fisheries.
#Sea ice #Meteorology #Storms #Weather forecasting #Aquaculture #Microwave radiometry #Ocean temperature #Earth #Sea surface #Ice surface
"Selective" region growing - an approach based on object-oriented classification routines
IEEE International Geoscience and Remote Sensing Symposium - Tập 3 - Trang 1612-1614 vol.3
C. Mott, T. Andresen, S. Zimmermann, T. Schneider, U. Ammer
Modern satellite sensors of the IKONOS generation offer very high resolution data. As a consequence, thematic classes are represented with high spectral variance. Hence, traditional pixel-based classification often falls short and delivers incomplete and inhomogeneous results. To avoid or at least to reduce these effects a "selective" region growing algorithm was developed, which combines the eval...... hiện toàn bộ
#Remote sensing #Testing #Statistics #Spatial resolution #Information analysis #Land use planning #Satellites #Scattering #Image analysis #Pixel
Application of the damage detection method using SAR intensity images to recent earthquakes
IEEE International Geoscience and Remote Sensing Symposium - Tập 4 - Trang 2042-2044 vol.4
M. Matsuoka, F. Yamazaki
One of the remarkable characteristics of synthetic aperture radar (SAR) is to record physical value called the backscattering coefficient of the Earth's surface not depending on weather conditions and Sun illumination. Therefore, SAR could be a powerful tool and be used to develop a universal method for grasping damaged areas by disasters such as earthquakes, forest fires and floods. Detailed grou...... hiện toàn bộ
#Earthquakes #Backscatter #Radar detection #Synthetic aperture radar #Earth #Sun #Lighting #Fires #Floods #Image analysis
Improving AMBRALS using new GO kernel
IEEE International Geoscience and Remote Sensing Symposium - Tập 4 - Trang 2305-2307 vol.4
Hua Yang, Xiaowen Li, Feng Gao, Lingmei Jiang
Kernel-driven BRDF (bi-directional reflectance distribution) model was the core of the AMBRALS, an algorithm for MODIS land surface BRDF and albedo products. In the onboard version of AMBRALS, the LiSparseR Geometrical-Optical (GO) kernel was used. But a new derived kernel - LiTransit kernel is also good at transition from LiSparse kernel to LiDense kernel when zenith angle is large, and accords m...... hiện toàn bộ
#Kernel #MODIS #Data processing #Bidirectional control #Reflectivity #Land surface #Stability #Sun #Table lookup #Information retrieval
Temporal soil moisture estimation of pastures from Radarsat data for applications in watershed modelling
IEEE International Geoscience and Remote Sensing Symposium - Tập 3 - Trang 1402-1404 vol.3
T.J. Pultz, J. Sokol, A. Deschamps, D. Jobin
Estimating the amount of water stored in a soil profile is essential in most water management projects and for assessing the hydrologic state of a basin. It determines infiltration during a rainfall event and controls evapotranspiration between storms. Rarely, however, are soil moisture data available for model input. In many cases, particularly watershed scale monitoring or modelling, soil moistu...... hiện toàn bộ
#Soil moisture #Water storage #State estimation #Project management #Storms #Monitoring #Temperature #Spatial resolution #Image resolution #Data mining
Investigation of linear spectral mixtures of the reflectance spectra using laboratory simulated forest scenes
IEEE International Geoscience and Remote Sensing Symposium - Tập 3 - Trang 1535-1537 vol.3
Baoxin Hu, J.R. Miller, Jinnian Wang, N.S. Goel
In this study, we used laboratory data to investigate the effects of multiple scattering between tree crowns and snow background on the linearity of mixtures of the reflectance of winter forest scenes. Several scenes were designed in the laboratory to simulate the natural forest winter landscape. Hyperspectral images of the designed scenes were acquired by the Compact Airborne Spectrographic Image...... hiện toàn bộ
#Reflectivity #Laboratories #Layout #Remote sensing #Scattering #Snow #Computational modeling #Linearity #Hyperspectral sensors #Hyperspectral imaging
Laboratory measurements of microwave emission from capillary waves
IEEE International Geoscience and Remote Sensing Symposium - Tập 6 - Trang 3638-3640 vol.6
A.V. Kuzmin, Y.G. Trokhimovski, M.N. Pospelov, I.N. Sadovsky
The results of polarimetric microwave measurements of thermal emission from a water surface with artificial periodic structure are presented. The goal of the experiment was a verification of the model describing the polarized microwave emission from gravity-capillary waves on a sea surface. The structure in a water tank was produced by a set of parallel nylon threads raised a little over a surface...... hiện toàn bộ
#Laboratories #Microwave measurements #Sea measurements #Sea surface #Ocean temperature #Stokes parameters #Periodic structures #Polarization #Surface waves #Yarn
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