1–32 von 32 Ergebnissen
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    The Global Emergence of Community Drones (2012–2017)

    Freier Zugriff
    Nicolás Vargas-Ramírez / Jaime Paneque-Gálvez | DOAJ | 2019
    and found that (1) they mostly occurred in Latin America from 2014; (2) commercial and multirotor drones were the most frequently employed; (3 ...

    Thermal Infrared Imaging from Drones Offers a Major Advance for Spider Monkey Surveys

    Freier Zugriff
    Denise Spaan / Claire Burke / Owen McAree et al. | DOAJ | 2019
    costs and difficulty in surveying these species. Recently, researchers have started to use drones to obtain data on animal distribution and ...

    Editorial of Special Issue “Drones for Biodiversity Conservation and Ecological Monitoring”

    Freier Zugriff
    Ricardo Díaz-Delgado / Sander Mücher | DOAJ | 2019
    drones equipped with high-resolution visible, multispectral or thermal cameras to assess the state of ecosystems, the effect of disturbances, or ...

    UAV-g 2019: Unmanned Aerial Vehicles in Geomatics

    Freier Zugriff
    Francesco Nex | DOAJ | 2019
    computer vision, thereby increasing the impact of this conference. The 2019 edition has been hosted by the University of Twente (The Netherlands ...
    Schlagwörter: drones

    Calibrating Sentinel-2 Imagery with Multispectral UAV Derived Information to Quantify Damages in Mediterranean Rice Crops Caused by Western Swamphen (Porphyrio porphyrio)

    Freier Zugriff
    Magda Pla / Gerard Bota / Andrea Duane et al. | DOAJ | 2019
    Sentinel-2 imagery to quantify damages in the region of Ebro Delta, western Mediterranean. UAV vegetation index NDVI (Normalized Difference ...

    Quadcopter-Based Rapid Response First-Aid Unit with Live Video Monitoring

    Freier Zugriff
    Raffay Rizwan / Muhammad Naeem Shehzad / Muhammad Naeem Awais | DOAJ | 2019

    Drone Laser Scanning for Modeling Riverscape Topography and Vegetation: Comparison with Traditional Aerial Lidar

    Freier Zugriff
    Jonathan P. Resop / Laura Lehmann / W. Cully Hession | DOAJ | 2019

    Using Object-Oriented Classification for Coastal Management in the East Central Coast of Florida: A Quantitative Comparison between UAV, Satellite, and Aerial Data

    Freier Zugriff
    Bo Yang / Timothy L. Hawthorne / Hannah Torres et al. | DOAJ | 2019
    -spectral satellite imagery (Sentinel-2) was also acquired to map land cover for the same region. NDVI and object-oriented classification methods ...
    Schlagwörter: Sentinel-2

    Fright or Flight? Behavioural Responses of Kangaroos to Drone-Based Monitoring

    Freier Zugriff
    Elizabeth Brunton / Jessica Bolin / Javier Leon et al. | DOAJ | 2019
    Drones are often considered an unobtrusive method of monitoring terrestrial wildlife; however research into whether drones disturb wildlife ...

    Assessing Reef-Island Shoreline Change Using UAV-Derived Orthomosaics and Digital Surface Models

    Freier Zugriff
    Meagan K. Lowe / Farrah Anis Fazliatul Adnan / Sarah M. Hamylton et al. | DOAJ | 2019
    Schlagwörter: drones

    A UAV-Based Sensor System for Measuring Land Surface Albedo: Tested over a Boreal Peatland Ecosystem

    Freier Zugriff
    Francis Canisius / Shusen Wang / Holly Croft et al. | DOAJ | 2019
    and Sentinel-2 satellite observations. Results show the agreement between total shortwave albedo from UAV pyranometer and Landsat 8 (R2 = 0.73 ...
    Schlagwörter: Sentinel-2

    Identification of Ramularia Leaf Blight Cotton Disease Infection Levels by Multispectral, Multiscale UAV Imagery

    Freier Zugriff
    Thomaz W. F. Xavier / Roberto N. V. Souto / Thiago Statella et al. | DOAJ | 2019

    Positional Precision Analysis of Orthomosaics Derived from Drone Captured Aerial Imagery

    Freier Zugriff
    I-Kuai Hung / Daniel Unger / David Kulhavy et al. | DOAJ | 2019
    The advancement of drones has revolutionized the production of aerial imagery. Using a drone with its associated flight control and image ...
    Schlagwörter: drones

    A K Nearest Neighborhood-Based Wind Estimation for Rotary-Wing VTOL UAVs

    Freier Zugriff
    Liyang Wang / Gaurav Misra / Xiaoli Bai | DOAJ | 2019

    Giant Big Stik R/C UAV Computer Model Development in JSBSim for Sense and Avoid Applications

    Freier Zugriff
    Oihane Cereceda / Luc Rolland / Siu O’Young | DOAJ | 2019

    Assessment of Texture Features for Bermudagrass (Cynodon dactylon) Detection in Sugarcane Plantations

    Freier Zugriff
    Cesare Di Girolamo-Neto / Ieda Del’Arco Sanches / Alana Kasahara Neves et al. | DOAJ | 2019
    sugarcane. Aerial images with a spatial resolution of 2 cm were acquired from a sugarcane field in Brazil. The Green-Red Vegetation Index and ...

    Morphological Exposure of Rocky Platforms: Filling the Hazard Gap Using UAVs

    Freier Zugriff
    Rafael C. Carvalho / Colin D. Woodroffe | DOAJ | 2019
    Schlagwörter: drones

    A Low Cost Approach to Disturbed Soil Detection Using Low Altitude Digital Imagery from an Unmanned Aerial Vehicle

    Freier Zugriff
    Elizabeth Parrott / Heather Panter / Joanne Morrissey et al. | DOAJ | 2019

    Sun Tracking Technique Applied to a Solar Unmanned Aerial Vehicle

    Freier Zugriff
    Jorge L. Hernandez-Toral / Iván González-Hernández / Rogelio Lozano | DOAJ | 2019

    Implementation of a UAV–Hyperspectral Pushbroom Imager for Ecological Monitoring

    Freier Zugriff
    J. Pablo Arroyo-Mora / Margaret Kalacska / Deep Inamdar et al. | DOAJ | 2019
    agreement (<2%) between the image derived reflectance and in-situ measurements. Overall, we found that a flight speed of 2.7 m/s, careful mission ...

    Comparing sUAS Photogrammetrically-Derived Point Clouds with GNSS Measurements and Terrestrial Laser Scanning for Topographic Mapping

    Freier Zugriff
    Omar E. Mora / Amal Suleiman / Jorge Chen et al. | DOAJ | 2019
    the vertical component was 2 mm with a standard deviation of 31 mm. These results indicate that sUAS imagery can produce point clouds ...

    Use of Fire-Extinguishing Balls for a Conceptual System of Drone-Assisted Wildfire Fighting

    Freier Zugriff
    Burchan Aydin / Emre Selvi / Jian Tao et al. | DOAJ | 2019
    system (UAS) to detect spot fires and monitor the risk of wildfire approaching a building, fence, and/or firefighting crew via remote sensing, (2 ...
    Schlagwörter: drones

    Identifying Species and Monitoring Understorey from UAS-Derived Data: A Literature Review and Future Directions

    Freier Zugriff
    Lorna Hernandez-Santin / Mitchel L. Rudge / Renee E. Bartolo et al. | DOAJ | 2019
    attributes that limit the ability to monitor understorey vegetation—specifically (1) spatial resolution, (2) spectral sensitivity, (3) spatial ...

    Drone Geologic Mapping of an Active Sand and Gravel Quarry, Desoto County, Mississippi

    Freier Zugriff
    Caroline Behrman / Roy Van Arsdale / Youngsang Kwon et al. | DOAJ | 2019
    (250 m) by 655 ft (200 m) and 79-ft (24 m) deep upon completion of the mining. Eight 3-D models of the pit were made at different times to ...
    Schlagwörter: 3-D model

    Recognize the Little Ones: UAS-Based In-Situ Fluorescent Tracer Detection

    Freier Zugriff
    Henning Teickner / Jan R. K. Lehmann / Patrick Guth et al. | DOAJ | 2019
    for the first time. We (1) excited fluorescent tracers utilizing an UV radiation source and recorded images with an UAS, (2) conducted a semi ...

    Prediction of Optical and Non-Optical Water Quality Parameters in Oligotrophic and Eutrophic Aquatic Systems Using a Small Unmanned Aerial System

    Freier Zugriff
    Juan G. Arango / Robert W. Nairn | DOAJ | 2019
    extraction, (2) average value extraction around the stations, and (3) point extraction using kriged surfaces. Results indicate that multiple variable ...