Remote Sensors
Mostrando 1-12 de 67 artigos, teses e dissertações.
-
1. Erosion of the nocturnal boundary layer in the central Amazon during the dry season
RESUMO Este estudo teve como objetivo analisar a erosão da camada limite noturna (CLN) na Amazônia central durante a estação seca de 2014, usando dados do Projeto GoAmazon 2014/5 e saídas do modelo de alta resolução (PArallelized Les Model - PALM). O conjunto de dados consistiu de medidas por instrumentos in situ (radiossonda) e sensoriamento remoto (
Acta Amaz.. Publicado em: 25/11/2019
-
2. Desenvolvimento de sistema de baixo custo para monitoramento de integridade estrutural
RESUMO O Monitoramento da Integridade Estrutural (MIE) pode ser utilizado para avaliar as condições de integridade de uma estrutura, ou ainda para verificar modelos de comportamento da mesma. Os atuais sistemas de monitoramento aplicados em grandes estruturas, contam com inúmeros sensores, dos mais variados tipos, que formam redes de comunicação, em alg
Matéria (Rio J.). Publicado em: 25/11/2019
-
3. Remote sensing of the chlorophyll-a based on OLI/Landsat-8 and MSI/Sentinel-2A (Barra Bonita reservoir, Brazil)
ABSTRACT In this present research, we assessed the performance of band algorithms in estimating chlorophyll-a (Chl-a) concentration based on bands of two new sensors: Operational Land Imager onboard Landsat-8 satellite (OLI/Landsat-8), and MultiSpectral Instrument onboard Sentinel-2A (MSI/Sentinel-2A). Band combinations designed for Thematic Mapper onboard L
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
-
4. Assessment of sugarcane harvesting residue effects on soil spectral behavior
ABSTRACT When the harvesting of sugarcane involves a mechanized process, plant residues remain on the soil surface, which makes proximal and remote sensing difficult to monitor. This study aimed to evaluate, under laboratory conditions, differences in the soil spectral behavior of surface layers Quartzipsamment and Hapludox soil classes due to increasing lev
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
-
5. Assessing biophysical variable parameters of bean crop with hyperspectral measurements
Recently high spectral resolution sensors have been developed, which allow new and more advanced applications in agriculture. Motivated by the increasing importance of hyperspectral remote sensing data, the need for research is important to define optimal wavebands to estimate biophysical parameters of crop. The use of narrow band vegetation indices (VI) der
Scientia Agricola. Publicado em: 2012-04
-
6. Utilização de sistemas dedicados a protocolos de rede aplicados à eficiência energética da iluminação pública
O sistema de iluminação pública da cidade do Natal/RN apresenta problemas recorrentes no aspecto do monitoramento, visto que atualmente não é possível detectar em tempo real as lâmpadas que estão acesas durante o dia, ou as que estão apagadas (queimadas) durante a noite. Estes fatores depreciam a eficiência dos serviços prestados, bem como, do uso
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/11/2011
-
7. Estudo com sensores para a mensuração de falhas nas fileiras de cana-de-açucar (Sacchararum SSP.) / Study with sensors for measuring gaps in the rows of sugar cane (Saccharum ssp.)
Brazil is the world\ s largest producer of sugarcane and has a booming market. Because of the productive potentiality and profitability of sugarcane the interest in site specific management techniques and demand for new technologies are increasing. Therefore this project aims to study options of sensors for measurement and georeferencing of failures, explori
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/09/2011
-
8. DECISION SUPPORT SYSTEM FOR USE IN AGRIBUSINESS (SADA): TELEMETRY AND DATA PROCESSING PERFORMANCE OF MACHINE HARVEST / SISTEMA DE APOIO À DECISÃO PARA UTILIZAÇÃO NO AGRONEGÓCIO (SADA): TELEMETRIA E TRATAMENTO DE DADOS DE DESEMPENHO DE MÁQUINA DE COLHEITA
To obtain higher profitability in farms, it is essential to proper management of the operations performed, caused by concern over the operational cost of the machines used, which represents a high percentage compared to total costs of operation and can be up to forty percent. This cost can be reduced if the use of machinery is optimized, improving performanc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
-
9. Numerical evaluation of an air-to-air missile radar cross section signature at X-band
Abstract: The remote detection of a vehicle requires that some kinds of its emissions are tracked and detected. Usually, electromagnetic emissions are used in the form of radar (electromagnetic waves in the range of radiofrequency and microwaves). Different types of antennas are used as sensors, tailored to the signal frequency band and its polarization, as
J. Aerosp. Technol. Manag.. Publicado em: 2011-12
-
10. Soy production area estimates in Mato Grosso, Brazil, using MODIS NDVI time series.
Brazil is the second largest soy producer in the world, with an estimated crop of 57 million tons in 2008/2009 season (CONAB). Total planted area accounted for 21.7 million ha, 26% of which is located in Mato Grosso state (MT). Given the large extent of Brazilian soy production and its economical impact for both national and international markets, crop area
MEETING OF THE AMERICAN. Publicado em: 2011
-
11. O uso de imagens do Sensor Aster no mapeamento de unidades vulcano-sedimentares do Platô da Ramada, Vila Nova do Sul, RS
The remote sensing products which are generated by orbitals sensors of middle spatial and spectral resolution and the development of new technique of digital image processing has been a auxiliary tool in the basic geological surveys. In this work was utilized images obtained from the ASTER sensor (Advanced Spaceborne Thermal Emission and Reflection Radiomete
Publicado em: 2010
-
12. Utilização de imagens de alta resolução para gerenciamento de zonas de proteção de aeródromos
In recent years, large cities have experienced disordered growth, resulting in many problems of infrastructure that reached the airports neighborhoods, causing many obstacles that affect the safety of aircrafts, passengers and people living near the airports. An other result is the airport¿s restriction, in such a way to affect the socio-economic developmen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010