Results 31 to 40 of about 11,538 (196)

Research on a Robust Backstepping Attitude Controller for Multi-rotor Plant Protection UAV [PDF]

Journal of Physics: Conference Series, 2021
Abstract The plant protection UAV is an important application equipment for precision spraying technology. However, in the process of spraying, the change of its own load will lead to the decline of control performance and disturbance rejection ability.
Yunling Liu, Yan Ma
openaire   +1 more source

The Improved A* Obstacle Avoidance Algorithm for the Plant Protection UAV with Millimeter Wave Radar and Monocular Camera Data Fusion

Remote Sensing, 2021
To enhance obstacle avoidance abilities of the plant protection UAV in unstructured farmland, this article improved the traditional A* algorithms through dynamic heuristic functions, search point optimization, and inflection point optimization based on ...
Xin Huang, Xiaoya Dong, Jing Ma, Kuan Liu, Shibbir Ahmed, Jinlong Lin, Baijing Qiu   +6 more
doaj   +1 more source

Quantifying the effect of aerial imagery resolution in automated hydromorphological river characterisation [PDF]

, 2016
Existing regulatory frameworks aiming to improve the quality of rivers place hydromorphology as a key factor in the assessment of hydrology, morphology and river continuity.
Ballesteros Gonzalez, Rocio, Bellamy, Pat, Rivas Casado, Monica, Wright, Ros   +3 more
core   +8 more sources

Flight Safety Strategy Analysis of the Plant Protection UAV

IFAC-PapersOnLine, 2018
Abstract With the popularization of the concept of plant protection unmanned aerial vehicle (UAV) and the popularity of plant protection UAV, the requirement of flight safety is becoming higher and higher. Because of the difference of operating environments and operation requirements, compared to others areas of UAV, the focus of the research of ...
Shubo Wang, Yu Han, Jian Chen, Nanan Du, Yue Pan, Guangqi Wang, Zichao Zhang, Yongjun Zheng   +7 more
openaire   +1 more source

Efficacy of cotton harvest aids applications with unmanned aerial vehicles (UAV) and ground-based field sprayers – A case study comparison

Smart Agricultural Technology, 2022
The opportunity of using of Unmanned Aerial Vehicles (UAVs) for applying harvest aids in ultra-low volumes (ULV) in cotton is an interesting perspective to overcome common problems associated with traditional ground-based applications like crop ...
Chris Cavalaris, Christos Karamoutis, Athanasios Markinos   +2 more
doaj   +1 more source

Mapping and classification of ecologically sensitive marine habitats using unmanned aerial vehicle (UAV) imagery and object-based image analysis (OBIA) [PDF]

, 2018
Nowadays, emerging technologies, such as long-range transmitters, increasingly miniaturized components for positioning, and enhanced imaging sensors, have led to an upsurge in the availability of new ecological applications for remote sensing based on ...
Ardizzone, Domenico, Belluscio, Andrea, Bonifazi, Andrea, Gravina, Maria Flavia, Ventura, Daniele   +4 more
core   +1 more source

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

Drones: Innovative Technology for Use in Precision Pest Management. [PDF]

, 2020
Arthropod pest outbreaks are unpredictable and not uniformly distributed within fields. Early outbreak detection and treatment application are inherent to effective pest management, allowing management decisions to be implemented before pests are well ...
de Lange, Elvira S, Heldens, Wieke B, Iost Filho, Fernando H, Kong, Zhaodan   +3 more
core   +1 more source

Research of Control System for Plant Protection UAV Based on Pixhawk

Procedia Computer Science, 2020
Abstract In this paper the plant protection UAV control system based on Pixhawk flight controller has been proposed, which the system consists of two subsystems: flight control system and spray system. Based on PX4 firmware has been adopted to achieve the Pixhawk flight control.
Kang Yang, Guang You Yang, S Isi Huang Fu   +2 more
openaire   +1 more source

Airborne and Terrestrial Laser Scanning Data for the Assessment of Standing and Lying Deadwood: Current Situation and New Perspectives [PDF]

, 2018
LiDAR technology is finding uses in the forest sector, not only for surveys in producing forests but also as a tool to gain a deeper understanding of the importance of the three-dimensional component of forest environments.
Lingua, Emanuele, Marchi, Niccolo', Pirotti, Francesco   +2 more
core   +1 more source