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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
04/09/2001 |
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Data da última atualização: |
10/12/2018 |
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Autoria: |
FORMAGGIO, A. R.; EPIPHANIO, J. C. N.; SIMÕES, M. dos S. |
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Afiliação: |
Antonio Roberto Formaggio, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto; José Carlos Neves Epiphanio, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto; Maurício dos Santos Simões, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto. |
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Título: |
Radarsat backscattering from an agricultural scene. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 36, n. 5, p. 823-30, maio 2001 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Retroespalhamento de uma cena agrícola em imagem de radar. |
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Conteúdo: |
Orbital remote sensing in the microwave electromagnetic region has been presented as an important tool for agriculture monitoring. The satellite systems in operation have almost all-weather capability and high spatial resolution, which are features appropriated for agriculture. However, for full exploration of these data, an understanding of the relationships between the characteristics of each system and agricultural targets is necessary. This paper describes the behavior of backscattering coefficient (so) derived from calibrated data of Radarsat images from an agricultural area. It is shown that in a dispersion diagram of so there are three main regions in which most of the fields can be classified. The first one is characterized by low backscattering values, with pastures and bare soils; the second one has intermediate backscattering coefficients and comprises well grown crops mainly; and a third one, with high backscattering coefficients, in which there are fields with strong structures causing a kind of double bounce effect. The results of this research indicate that the use of Radarsat images is optimized when a multitemporal analysis is done making the best use of the agricultural calendar and of the dynamics of different cultures. |
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Palavras-Chave: |
Farmland; Terras agricolas. |
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Thesagro: |
Radar; Sensoriamento Remoto; Uso da Terra. |
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Thesaurus Nal: |
land use; remote sensing. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/19130/1/pab0823.pdf
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Marc: |
LEADER 01991naa a2200241 a 4500
001 1103898
005 2018-12-10
008 2001 bl uuuu u00u1 u #d
100 1 $aFORMAGGIO, A. R.
245 $aRadarsat backscattering from an agricultural scene.
260 $c2001
500 $aTítulo em português: Retroespalhamento de uma cena agrícola em imagem de radar.
520 $aOrbital remote sensing in the microwave electromagnetic region has been presented as an important tool for agriculture monitoring. The satellite systems in operation have almost all-weather capability and high spatial resolution, which are features appropriated for agriculture. However, for full exploration of these data, an understanding of the relationships between the characteristics of each system and agricultural targets is necessary. This paper describes the behavior of backscattering coefficient (so) derived from calibrated data of Radarsat images from an agricultural area. It is shown that in a dispersion diagram of so there are three main regions in which most of the fields can be classified. The first one is characterized by low backscattering values, with pastures and bare soils; the second one has intermediate backscattering coefficients and comprises well grown crops mainly; and a third one, with high backscattering coefficients, in which there are fields with strong structures causing a kind of double bounce effect. The results of this research indicate that the use of Radarsat images is optimized when a multitemporal analysis is done making the best use of the agricultural calendar and of the dynamics of different cultures.
650 $aland use
650 $aremote sensing
650 $aRadar
650 $aSensoriamento Remoto
650 $aUso da Terra
653 $aFarmland
653 $aTerras agricolas
700 1 $aEPIPHANIO, J. C. N.
700 1 $aSIMÕES, M. dos S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 36, n. 5, p. 823-30, maio 2001
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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| 2. |  | PAULA NETO, A.; FAVARIN, J. L.; REIS, A. R. dos; TEZOTTO, T.; ALMEIDA, R. E. M. de; LAVRES JUNIOR, J.; GALLO, L. A. Nitrogen metabolism in coffee plants in response to nitrogen supply by fertigation. Theoretical and Experimental Plant Physiology, v. 27, n. 1, p. 41-50, Mar. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Pesca e Aquicultura. |
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