Showing 61 - 80 results of 331 for search '"Pilot (aircraft)"', query time: 0.18s Refine Results
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    ESTUDO FISIOGRÁFICO DE UMA PEQUENA BACIA HIDROGRÁFICA UTILIZANDO UM REMOTELY PILOTED AIRCRAFT SYSTEM (RPAS) by Rute Daniela Chaves, George Marino Soares Gonçalves, Lukas dos Santos Boeira, Gabriel Borges Dos Santos, Viviane Santos Silva Terra, Gilberto Loguercio Collares

    Published 2022-01-01
    “…Com base no exposto, esse trabalho tem por objetivo analisar e avaliar as características fisiográficas da bacia hidrográfica do Arroio do Ouro, sub-bacia do Arroio Pelotas, localizada no sul do estado do Rio Grande do Sul (RS), utilizando um Modelo Digital de Elevação (MDE) obtido a partir da aplicação de um Remotely Piloted Aircraft System (RPAS). Os resultados obtidos permitiram uma visão ampla e geral das características de relevo e da rede de drenagem da bacia. …”
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    Characterization of morphological units in a small, forested stream using close-range remotely piloted aircraft imagery by C. Helm, M. A. Hassan, D. Reid

    Published 2020-11-01
    “…In larger streams, remotely piloted aircraft (RPA) have proven to be effective tools for characterizing channels at high resolutions over large spatial extents, but to date their use in small, forested streams with closed forest canopies has been limited. …”
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    Estimate and Temporal Monitoring of Height and Diameter of the Canopy of Recently Transplanted Coffee by a Remotely Piloted Aircraft System by Nicole Lopes Bento, Gabriel Araújo e Silva Ferraz, Rafael Alexandre Pena Barata, Daniel Veiga Soares, Lucas Santos Santana, Brenon Diennevan Souza Barbosa

    Published 2022-02-01
    “…This study aims to calculate the height and canopy diameter of recently transplanted coffee plants over three periods of crop development using aerial images, verify statistical differences between field measurements and aerial images, estimate linear equations between field data and aerial images, and monitor the temporal profile of the growth and development of the cultivar understudy in the field based on information extracted from aerial images through a Remotely Piloted Aircraft System (RPAS). The study area comprises a recently transplanted five-month-old <i>Coffea arabica</i> L. cultivar IAC J10 with information of height and crown diameter collected in the field and aerial images obtained by RPAS. …”
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    Application rate and hydraulic tips used in remotely piloted aircraft affect the phytosanitary products in coffee plant canopies by Cleyton Batista de Alvarenga, Renan Zampiróli, João Paulo Arantes Rodrigues da Cunha, Paula Cristina Natalino Rinaldi, Bruno Amâncio da Cunha, Layanara Oliveira Faria

    Published 2023-10-01
    “… Most coffee (Coffea arabica) phytosanitary management techniques are performed using ground-based equipment, and remotely piloted aircraft are a recent alternative. Therefore, this study evaluates the effect of different application rates and hydraulic tips used for spreading phytosanitary products on coffee crops using a remotely piloted aircraft, assisted by artificial targets and dye tracing. …”
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    Use of large-eddy simulations to design an adaptive sampling strategy to assess cumulus cloud heterogeneities by remotely piloted aircraft by N. Maury, G. C. Roberts, G. C. Roberts, F. Couvreux, T. Verdu, T. Verdu, P. Narvor, N. Villefranque, S. Lacroix, G. Hattenberger

    Published 2022-01-01
    “…To provide a higher spatial and temporal resolution, remotely piloted aircraft (RPA) can now be employed for direct observations using numerous technological advances to map the microphysical cloud structure and to study entrainment mixing. …”
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  11. 71

    3D MODELLING OF A HISTORICAL BUILDING USING CLOSE-RANGE PHOTOGRAMMETRY AND REMOTELY PILOTED AIRCRAFT SYSTEM (RPAS) by M. Lo Brutto, D. Ebolese, G. Dardanelli

    Published 2018-05-01
    “…In particular, the integration of terrestrial close-range photogrammetry and Remotely Piloted Aircraft Systems (RPASs) photogrammetry allows to create accurate and reliable 3D models of buildings and to monitor their state of conservation. …”
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  12. 72

    Use of Remotely Piloted Aircraft System Multispectral Data to Evaluate the Effects of Prescribed Burnings on Three Macrohabitats of Pantanal, Brazil by Harold E. Pineda Valles, Gustavo Manzon Nunes, Christian Niel Berlinck, Luiz Gustavo Gonçalves, Gabriel Henrique Pires de Mello Ribeiro

    Published 2023-06-01
    “…Multispectral and thermal data analyses were conducted with remotely piloted aircraft systems in 1 ha plots in three periods of the dry season with early, mid, and late burning. …”
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    Classifiers based on artificial intelligence in the prediction of recently planted coffee cultivars using a Remotely Piloted Aircraft System by NICOLE L. BENTO, GABRIEL ARAÚJO E.S. FERRAZ, RAFAEL ALEXANDRE P. BARATA, DANIEL V. SOARES, SABRINA A. TEODORO, PEDRO HENRIQUE DE O. ESTIMA

    Published 2023-10-01
    “…In this sense, due to the great importance in the cultivation, consumption and export of coffee in Brazil and the technological application of the Remotely Piloted Aircraft System (RPAS) this study aimed to compare and select models based on different data classification techniques by different classification algorithms for the prediction of different coffee cultivars (Coffea arabica L.) recently planted. …”
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  15. 75

    Remote sensing hail damage on maize crops in smallholder farms using data acquired by remotely piloted aircraft system by Mbulisi Sibanda, Helen S Ndlovu, Kiara Brewer, Siphiwokuhle Buthelezi, Trylee N Matongera, Onisimo Mutanga, John Odidndi, Alistair D Clulow, Vimbayi G P Chimonyo, Tafadzwanashe Mabhaudhi

    Published 2023-12-01
    “…Access to climate services and information, as well as digital advisories such as Robust spatially explicit monitoring techniques from remotely piloted aircraft systems (RPAS), could be instrumental in understanding the impact and extent of crop damage. …”
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    An inverse-modelling approach for frequency response correction of capacitive humidity sensors in ABL research with small remotely piloted aircraft (RPA) by N. Wildmann, F. Kaufmann, J. Bange

    Published 2014-09-01
    “…Since these instruments are too large and heavy for the application on small remotely piloted aircraft (RPA), a method is presented in this study that enhances small capacitive humidity sensors to be able to resolve turbulent eddies of the order of 10 m. …”
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    Towards higher accuracy and better frequency response with standard multi-hole probes in turbulence measurement with remotely piloted aircraft (RPA) by N. Wildmann, S. Ravi, J. Bange

    Published 2014-04-01
    “…This study deals with the problem of turbulence measurement with small remotely piloted aircraft (RPA). It shows how multi-hole probes (MHPs) can be used to measure fluctuating parts of the airflow in flight up to 20 Hz. …”
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    Vertical wind velocity measurements using a five-hole probe with remotely piloted aircraft to study aerosol–cloud interactions by R. Calmer, G. C. Roberts, G. C. Roberts, J. Preissler, K. J. Sanchez, K. J. Sanchez, S. Derrien, C. O'Dowd

    Published 2018-05-01
    “…The importance of vertical wind velocities (in particular positive vertical wind velocities or updrafts) in atmospheric science has motivated the need to deploy multi-hole probes developed for manned aircraft in small remotely piloted aircraft (RPA). In atmospheric research, lightweight RPAs ( &lt;  2.5 kg) are now able to accurately measure atmospheric wind vectors, even in a cloud, which provides essential observing tools for understanding aerosol–cloud interactions. …”
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