Results 41 to 50 of about 4,542,550 (227)

Droplet deposition characteristics of plant protection UAV spraying at night

International Journal of Precision Agricultural Aviation, 2018
Abstract: The spraying technology of plant protection UAVs is developing rapidly.  Although they can spray autonomously at night, the application performance under meteorological conditions at night still needs to be evaluated.  In this research, the droplet deposition characteristics of nighttime and daytime spray of a P20 UAV with different ...
Zhiwei Tian, Xinyu Xue, Longfei Cui, Chen Chen, Bin Peng   +4 more
openaire   +1 more source

Exploring consumers’ environmental ethical preferences in the context of unmanned aerial vehicle utilization for plant protection

Scientific Reports, 2023
The use of unmanned aerial vehicles (UAVs) has increased agricultural productivity, achieved food security, and eased the pressure associated with environmental degradation and population growth. However, consumer sentiment remains unclear.
Baoshu Wu, Jinlian Lu, Bo Zhou, Zhenjiang Song   +3 more
doaj   +1 more source

Research on Vision-Based Navigation for Plant Protection UAV under the Near Color Background [PDF]

Symmetry, 2019
GPS (Global Positioning System) navigation in agriculture is facing many challenges, such as weak signals in orchards and the high cost for small plots of farmland. With the reduction of camera cost and the emergence of excellent visual algorithms, visual navigation can solve the above problems.
Hehu Zhang, Xiushan Wang, Ying Chen, Guoqiang Jiang, Shifeng Lin   +4 more
openaire   +2 more sources

Turner Valley Gas Plant -- Turner Valley -- UAV Photogrammetry -- Metadata -- 2019

, 2020
This data set contains the metadata for the one hundred and twenty-six (126) files (.tif, .tfw) that create the orthomosaic image of Turner Valley Gas Plant.
Robinson, Christina, Duchscher, Rick, Dawson, Peter   +2 more
core   +1 more source

Current Research on Deposition and Drift of Droplets Sprayed by Plant Protection UAV

, 2023
Abstract Plant protection UAV, which is highly adapted to terrain and capable of efficient low-altitude spraying, will be extensively used in agricultural production. This paper systematically sorts out the single or several independent factors influencing the deposition characteristics of droplets sprayed by plant protection UAV, as well as ...
Weicai Qin, Panyang Chen
openaire   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Intelligent Sky Guardians (InSkyGuard): An Aerial Robotic Swarm for Autonomous Detection and Entrapment of Rogue Multirotors

Advanced Robotics Research, EarlyView.
Intelligent Sky Guardians (InSkyGuard) is introduced as a four‐drone swarm that autonomously detects, tracks, and safely captures rogue drones using a coordinated net system. Computer vision and leader–follower control architecture enable synchronized enclosure, while integrated failsafes enhance system reliability. Validated through closed‐environment
Joshua Hastings, Levanya Dewanarayana, Iline Shaju, Haider Al‐Wizni, Sampson Marquis, Weicheng Huang, Pooya Sareh   +6 more
wiley   +1 more source

Plant Variety Protection Office (PVPO) [PDF]

Plant breeders use plant variety protection as an important marketing tool that protects their innovation. The AMS Plant Variety Protection Office (PVPO) provides intellectual property protection to breeders of varieties of seed and tuber (potatoes ...
Plant Variety Protection Office
core   +1 more source

Cross‐scale Material‐Structure Synergy for 2D Metamaterials: Toward Customizable Intelligent Electromagnetic Manipulation in Multiphysics Fields

Advanced Science, EarlyView.
Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang, Xing Yang, Liping Liu, Yang Peng, Yangyang Wang, Hualiang Lv   +5 more
wiley   +1 more source

Comparison of Droplet Deposition Performance Between Caterpillar Mist Sprayer and Six-Rotor Unmanned Aerial Vehicle in Mango Canopy

智慧农业, 2022
In order to solve the problems of pesticides abuse, nonuniformity deposition and low operating efficiency, build up the smart mango orchard, sedimentary properties of liquids in mango canopy of two orchard pesticide machinery, i.e., orchard caterpillar ...
LI Yangfan, HE Xiongkui, HAN Leng, HUANG Zhan, HE Miao   +4 more
doaj   +1 more source