Field Radiometry
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Investigation of the theory of coupling compositis in thermal waves fields / Investigação da teoria de acoplamentos de compósitos em campos de ondas térmicas
In this work we elaborate an analytical solution of the temperature field of an opaque material containing two overlapping and parallel subsurface cylinders, illuminated by a modulated light beam. The method is based on the expansion of plane and cylindrical thermal waves, in series of Bessel and Hankel functions. Firstly, the work shows the model of propaga
Publicado em: 2009
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2. 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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3. Resposta espectral do capim-tanzânia à adubação nitrogenada e densidades de plantio / Spectral response of Tanzania grass to nitrogen fertilization and planting density
The use of variable nitrogen rate application is more efficient, avoiding losses by lixiviation. Assuming that it is possible to discriminate nitrogen rates by the spectral response of forage crops, it becomes necessary the knowledge of this variable effect on the forage spectral response. The goal of the present research was to evaluate the effect of four n
Publicado em: 2007
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4. Influência da geometria de iluminação e do ângulo de visada na resposta espectral da cultura do feijão (Phaseolus vulgaris L.) / Radiation geometry and viewing angle influence on the spectral response of bean crop (Phaseolus vulgaris L.)
The study of the spectral behavior of crops, through field radiometry, contributes to a better precision in models generated by remote sensing, when they are used to estimate and analyze crops agronomic variables. Once sensors aboard of satellites are able to acquire images under different viewing angles and at different times of the day, it is necessary t
Publicado em: 2006
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5. Desenvolvimento metodológico para a integração de dados de sensoriamento remoto multi resoluções para a representação da cobertura da terra em campos contínuos de vegetação e classificação por árvores de decisão / Methodology development for the multi resolution remote sensing data integration to the representation of earth covering in vegetation continuous filds and classification for decision tree
Atualmente, inúmeros esforços para mapear e monitorar as mudanças da cobertura da terra na Amazônia Brasileira têm-se baseado em análises de dados Landsat, consumindo para isto, um número expressivo de horas em laboratórios para o processamento destes dados. Além disso, estimativas de diferentes análises (dados de menor resolução-AVHRR) têm gera
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2005
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6. Desenvolvimento metodológico para a integração de dados de sensoriamento remoto multi resoluções para a representação da cobertura da terra em campos contínuos de vegetação e classificação por árvores de decisão / Methodology development for the multi resolution remote sensing data integration to the representation of earth covering in vegetation continuous filds and classification for decision tree
Now, countless efforts to quantify the monitoring of the changes of the covering of the earth are had based on analyses of data of the satellite Landsat, consuming for this, an expressive number of hours in laboratories for the processing of these data. Besides, estimates of different analyses (data of smaller resolution - AVHRR) have been generating conflic
Publicado em: 2005
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7. Desenvolvimento metodológico para a integração de dados de sensoriamento remoto multi resoluções para a representação da cobertura da terra em campos contínuos de vegetação e classificação por árvores de decisão / Methodology development for the multi resolution remote sensing data integration to the representation of earth covering in vegetation continuous filds and classification for decision tree
Atualmente, inúmeros esforços para mapear e monitorar as mudanças da cobertura da terra na Amazônia Brasileira têm-se baseado em análises de dados Landsat, consumindo para isto, um número expressivo de horas em laboratórios para o processamento destes dados. Além disso, estimativas de diferentes análises (dados de menor resolução-AVHRR) têm gera
Publicado em: 2005
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8. Analise de dados geologicos, geofisicos e de sensoriamento remoto para geração de modelos prospectivos para a região de Serra Leste, Carajas (PA)
The Serra Leste region, located in the northeast portion of the Carajás Mineral Province (State ofPará, Brazil), hosts several mineral deposits and mineralisations that are related to different geological settings. The Companhia Vale do Rio Doce holds the majority of the property claims in the region and motivated by its prospective potential, the company
Publicado em: 2002
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9. Dados radiométricos obtidos nos níveis terrestres e orbital na avaliação de solos. / Radiometric data obtained by terrestrial and orbital levels in the evaluation of soils.
The agricultural areas are becoming more and more technified, where the knowledge of the physical, chemical and mineralogical characteristics of soils becomes indispensable to maximize crop productivity. Brazil possesses a great territorial extension, and most of the areas do not possess soil maps compatible with the agricultural needs. Modern technological
Publicado em: 2002
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10. Desenvolvimento fenologico do trigo (cultivar IAC 24 - Tucurui), comportamento espectral e utilização de imagens NOAA-AVHRR
The agronomic development of wheat (Triticum aestivum L.) cultivar IAC-24 - Tucuruí and the seasonal evolution of its spectral characteristics were evaluated under field conditions. The study was carried out at an irrigated commercial farm, located in the municipality of Paranapanema, SP. Field experimental observations were collected during the 1995 growin
Publicado em: 2000
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11. Discriminacao de lateritas mineralizadas em ferro no deposito de N1 (Carajas-PA) por radar imageador: uma avaliacao atraves de classificacao textural / Discrimination of iron ore laterites in the deposit N1 (Crajas - PA) using radar imagery: an evaluation through textural classification
The use of imaging SAR presents a high potencial for geological applications in cloudy cover regions, such as the Brazilian Amazon, due to the side viewing geometry and the longer wavelengths, which result in the enhancement of the terrain and the all-weather sensing capability. As the macro and micro topography are normally highlighted in the Syntetic Apert
Publicado em: 1998
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12. Correlação de fitomassa foliar de campo cerrado com dados espectrais obtidos pelo sistema MSS/Landsat e por radiometria de campo / X
The objective of this study is to correlate foliar biomass data obtained in the field by a conventional destructive method with its spectral response from MSS-LANDSAT and from field radiometry. Both systems work in similar spectral bands throughout the red and near infrared wavelenghts. Its great potential for agriculture indicates the need for timely and ac
Publicado em: 1985