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Suche ohne Synonyme: title: Drones, Vol 7, Iss 5, p 282 (2023)

61–72 von 72 Ergebnissen
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    U-Net Performance for Beach Wrack Segmentation: Effects of UAV Camera Bands, Height Measurements, and Spectral Indices

    Freier Zugriff
    Edvinas Tiškus / Martynas Bučas / Jonas Gintauskas et al. | DOAJ | 2023
    height”, “5 bands”, “5 bands and height”, and “Band ratio indices”, this research provides insights into the optimal dataset combination for the ...

    Burrow-Nesting Seabird Survey Using UAV-Mounted Thermal Sensor and Count Automation

    Freier Zugriff
    Jacob Virtue / Darren Turner / Guy Williams et al. | DOAJ | 2023
    9.3% higher and took approximately 5% of the time needed for manual counts. Using both manual and automated counts, we estimated that there ...

    AGCosPlace: A UAV Visual Positioning Algorithm Based on Transformer

    Freier Zugriff
    Ya Guo / Yatong Zhou / Fan Yang | DOAJ | 2023
    achieves notable improvements in the four evaluation metrics: R@1, R@5, R@10, and R@20. These results confirm that the trained visual positioning ...

    Self-Calibration of UAV Thermal Imagery Using Gradient Descent Algorithm

    Freier Zugriff
    Radosław Szostak / Mirosław Zimnoch / Przemysław Wachniew et al. | DOAJ | 2023
    from several unwanted effects that contribute to the increase in temperature measurement error from ±0.5 °C in laboratory conditions to ±5 °C ...

    Crown Width Extraction of Metasequoia glyptostroboides Using Improved YOLOv7 Based on UAV Images

    Freier Zugriff
    Chen Dong / Chongyuan Cai / Sheng Chen et al. | DOAJ | 2023
    , which is 5% higher than that achieved by the original model. In crown width measurement, the R2 of the improved model reaches 0.837 ...

    Challenges in Inter-UAV 60 GHz Wireless Communication Utilizing Instantaneous Proximity Opportunities in Flight

    Freier Zugriff
    Ryosuke Isogai / Keitarou Kondou / Lin Shan et al. | DOAJ | 2023
    maintain a fixed distance, to sustain the 60 GHz link, successfully transmitting over 10 GB of data in the air with a throughput of approximately 5 ...

    GCP and PPK Utilization Plan to Deal with RTK Signal Interruption in RTK-UAV Photogrammetry

    Freier Zugriff
    Jung Min Cho / Byoung Kil Lee | DOAJ | 2023
    percentage of time during which the RTK signal was received (100%, 90%, 5%, and 0%) was obtained, and ATs were conducted both with and without PPK ...

    Implementation of an Edge-Computing Vision System on Reduced-Board Computers Embedded in UAVs for Intelligent Traffic Management

    Freier Zugriff
    Sergio Bemposta Rosende / Sergio Ghisler / Javier Fernández-Andrés et al. | DOAJ | 2023
    for optimizing traffic management in these scenarios. A dataset was constructed using two sources, several models (YOLO 5 and 8, DETR, and ...
    Schlagwörter: drones

    Wind Pressure Orthogonal Decomposition Anemometer: A Wind Measurement Device for Multi-Rotor UAVs

    Freier Zugriff
    Tianhao Hou / Hongyan Xing / Wei Gu et al. | DOAJ | 2023
    the system is ±0.3 m/s and ±2° under hovering conditions and ±0.7 m/s and ±5° under moving conditions. In summary, WPOD points to a new ...

    Exterminator for the Nests of Vespa velutina nigrithorax Using an Unmanned Aerial Vehicle

    Freier Zugriff
    Chun-Gu Lee / Seung-Hwa Yu | DOAJ | 2023
    exterminator were evaluated in laboratory tests, with a spray distance of 5 m deemed suitable. To evaluate the system’s pest-control performance ...

    Optimum Flight Height for the Control of Desert Locusts Using Unmanned Aerial Vehicles (UAV)

    Freier Zugriff
    Violet Ochieng’ / Ivan Rwomushana / George Ong’amo et al. | DOAJ | 2023
    alternatives. The successful use of drones to control pests such as fall armyworm, planthoppers, aphids, among others, makes it an attractive ...
    Schlagwörter: drones

    Effect of Operational Parameters of Unmanned Aerial Vehicle (UAV) on Droplet Deposition in Trellised Pear Orchard

    Freier Zugriff
    Peng Qi / Lanting Zhang / Zhichong Wang et al. | DOAJ | 2023
    . Followed by factor FS, which had a greater effect on spray coverage (p < 0.05), and factor SV, FH, which had a greater effect on deposition ...