نتایج جستجو برای: resolution geo
تعداد نتایج: 297189 فیلتر نتایج به سال:
The Orbiting Carbon Observatory (OCO), scheduled for launch in December 2008, will make the first space-based measurements of atmospheric CO2 with the precision, spatial and temporal resolution needed to characterize CO2 sources and sinks on regional spatial scales and seasonal to interannual time scales. Variations in surface topography have a direct impact on the retrieval of the columnaverag...
The demand of high-resolution spatial information such as geo-referenced images and realistic 3D models is rapidly increasing. Most existing systems to acquire such information involve expensive platforms such as manned or unmanned, air or ground vehicles to obtain high-resolution images and GPS/IMU data. Thanks to the availability of small image acquisition devices and light-weighted MEMS GPS/...
SAR mosaics are often not precisely geo-referenced because topographic distortions were not removed during the mosaicking process due to the lack of adequate digital elevation models (DEMs). The Shuttle Radar Topography Mission (SRTM) has recently provided high-resolution DEM data with nearly global coverage, and makes it possible to geo-rectify SAR mosaics. Though techniques are available for ...
Abstract This paper presents a robust approach using artificial neural networks in the form of a Self Organizing Map (SOM) as a semi-automatic method for analysis and identification of morphometric features in two completely different environments, the Man and Biosphere Reserve “Eastern Carpathians” (Central Europe) in a complex mountainous humid area and Yardangs in Lut Desert, Iran, a hyper...
Toponym resolution, or grounding names of places to their actual locations, is an important problem in analysis of both historical corpora and present-day news and web content. Recent approaches have shifted from rule-based spatial minimization methods to machine learned classifiers that use features of the text surrounding a toponym. Such methods have been shown to be highly effective, but the...
The “GEO (Global Earth Observation) Grid” is aiming at providing an E-Infrastructure to understand our Earth more insightful and more precisely, but faster and easier to worldwide Earth Sciences community. On the E-Infrastructure we are able to share data, application programs, and scientific workflows without knowing deep knowledge in IT where the grid technology is provisioned. GEO Grid provi...
As a contribution to a better understanding of the integration of different data sets into knowledge-based classification processes the presented study compares different data-fusion techniques which combine spectral and textural information of a QuickBird scene with ancillary data layers and a knowledge base for the identification of forest structures and habitats. The approach compares a fuzz...
A new 1 km global IIASA-IFPRI cropland percentage map for the baseline year 2005 has been developed which integrates a number of individual cropland maps at global to regional to national scales. The individual map products include existing global land cover maps such as GlobCover 2005 and MODIS v.5, regional maps such as AFRICOVER and national maps from mapping agencies and other organizations...
Geostationary (GEO) weather satellites have differed from low-Earth orbiting (LEO) weather satellites in that they have not carried microwave radiometers. The reason is that to get LEO resolution from GEO, one needs an antenna forty times as large. Even scaling the small AMSU antenna requires a 6-meter dish. As discussed elsewhere, a 3-meter antenna still provides adequate spatial resolution fo...
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