Atmospheric Correction
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Chagas disease ecoepidemiology and environmental changes in northern Minas Gerais state, Brazil
BACKGROUND Triatoma sordida and Triatoma pseudomaculata are frequently captured triatomine species in the Brazilian savannah and caatinga biomes, respectively, and in Brazilian domiciles. OBJECTIVES This study identified eco-epidemiological changes in Chagas disease in northern Minas Gerais state, Brazil, and considered the influence of environmental shift
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-11
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2. Is It Possible to Classify Topsoil Texture Using a Sensor Located 800 km Away from the Surface?
ABSTRACT It is often difficult for pedologists to “see” topsoils indicating differences in properties such as soil particle size. Satellite images are important for obtaining quick information for large areas. However, mapping extensive areas of bare soil using a single image is difficult since most areas are usually covered by vegetation. Thus, the aim
Rev. Bras. Ciênc. Solo. Publicado em: 03/11/2016
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3. Mapeamento de areas de cafe no municipio de Guaxupe/MG por meio de processamento digital de imagens Landsat / Coffee crop areas mapping in mountain relief through Principals Components Analysis
The economic importance of Brazilian coffee growing in the world market is notorious and makes up significant portion of the country s foreign trade exports. Minas Gerais stands out as the core of Brazilian coffee growing, with most of the planting areas (Coffea arabica) concentrated in the south, where it is grown in small plots widely spread throughout the
Publicado em: 2009
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4. Editorial
Publicado em: 2008
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5. Avaliação de metodologias de caracterização atmosférica na conversão de dados radiométricos digitais em valores físicos
- The conversion of digital numbers (DN) of orbital images to physical quantities of the Earth surface is dependent on a good atmospheric characterization, which has been performed through the use of data collected by meteorological balloons or by sun photometers positioned at the surface. Recently some orbital sensors have generated useful data that can be
Publicado em: 2008
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6. Spectral dynamic of the soybean crop along the vegetative cycle and its relation with the yield in the western region of Parana state / Dinamica espectral da cultura da soja ao longo do ciclo vegetativo e sua relação com a produtividade na região oeste do Parana
Estudos e pesquisas referentes ao acompanhamento da produção agropecuária têm um peso determinante e estratégico na economia do país. Nos últimos anos, essas pesquisas vêm sofrendo grandes transformações para se tornarem menos subjetivas. A associação das técnicas de sensoriamento remoto e métodos estatísticos podem proporcionar uma visão sin
Publicado em: 2007
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7. Correção atmosferica de imagens do sensor AVHRR/NOAA utilizando produtos atmosfericos do sensor MODIS/TERRA / Potencial of use of atmospheric products of sensor MODIS/TERRA, for atmospheric correction of images AVHRR/NOAA
O sensoriamento remoto nas regiões espectrais do visível e do infravermelho próximo constitui uma das ferramentas mais importantes para o entendimento da biosfera e de suas dinâmicas. Entretanto, estas duas regiões são afetadas pelos efeitos atmosféricos tais como, o espalhamento e a absorção,ocasionados por sua vez pelos aerossóis e gases atmosfé
Publicado em: 2006
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8. Previsão de atributos do clima e do rendimento de grãos de milho na região Centro-Sul do Brasil / Forecast of climatic features and corn grain yield in the Brazilian Center-South region
Crop forecast has become an important tool for the private and public agricultural policies to be established. Generally, crop forecast is composed by climatic forecast and the yield estimative of growth of economically interesting parts of crops. The climatic forecast can be performed through the analyses of historical series of the climatic features and of
Publicado em: 2006
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9. Desenvolvimento e avaliação de uma metodologia para detecção de mudanças na cobertura vegetal do semi-árido. / Development and evaluation of a methodology for detection of changes in the vegetal cover of the semi-arid one.
In this work a methodology for the change detection in vegetation cover of semi-arid region was developed, using multi-temporal images of TMLandsat, in the red spectral band. In order to implement operationally this methodology two digital techniques were developed. These techniques do not need to make use of images with atmospheric correction for the genera
Publicado em: 2004
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10. Avaliação das imagens do sensor ASTER para discriminação espectral de variações faciológicas no granito Serra Branca, estado de Goiás / Aster sensor images valuation to spectral discrimination of faciologics variations in the Serra Branca granite, Goias state
The objective of this work was to evaluate the potential of ASTER/Terra images, acquired in the visible and near-infrared (VNIR) regions and in the shortwave infrared (SWIR) interval, for the discrimination of faciological variations in the Serra Branca granite massif in the Tin Province of the Goiás. This province is composed of several granitoid bodies th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/10/2003
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11. Comparison of engine power correction factors for varying atmospheric conditions
This work evaluates proposed methods to correct engine power output as a function of atmospheric conditions. The analysis was made through experiments carried out in a vehicle on the road, under different temperature, pressure and air humidity conditions. The vehicle had a four-cylinder gasoline-fuelled engine, with multi-point fuel injection system, variabl
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-09
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12. Assinaturas espectrais de gossans associados a mineralizações de Pb-Zn-Ba na Bacia de Irece (BA) : um estudo baseado em dados de sensores TM e ASTER
The aim ofthis work was to develop strategies for detection ofgossans associated to Pb-Zn-Ba deposits in the Irece basin (BA), as well as their distinction ftom generic laterites, using remote sensing data and techniques. Samples of gossans collected in the study area were analysed by reflectance spectroscopy methods, using a high resolution FieldSpec FR spe
Publicado em: 2003