Results 131 to 140 of about 35,165 (291)

Integrated LEO Constellation and In‐Cabin Distribution System for Continuous Aircraft 5G Connectivity

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada, Victor Monzon Baeza, Carlos Horcajo Fernández de Gamboa, Rocío Serrano Camacho, Carlos Monzo   +4 more
wiley   +1 more source

Research on safety risk assessment of aging UAV system

Hangkong gongcheng jinzhan
The existing unman aerial vehicle(UAV) risk assessment mostly focuses on small UAV, and there is relatively little research on the aging assessment system of large drones.
WANG Chao, REN Bo, ZENG Hang
doaj   +1 more source

Characteristics of photosynthesis and vertical canopy architecture of citrus trees under two labor-saving cultivation modes using unmanned aerial vehicle (UAV)-based LiDAR data in citrus orchards. [PDF]

Hortic Res, 2023
Dian Y, Liu X, Hu L, Zhang J, Hu C, Liu Y, Zhang J, Zhang W, Hu Q, Zhang Y, Fang Y, Zhou J.   +11 more
europepmc   +1 more source

A waypoint-based mission planner for a farmland coverage with an aerial robot - a precision farming tool

, 2011
Remote sensing (RS) with aerial robots is becoming more usual in every day time in Precision Agriculture (PA) practices, do to their advantages over conventional methods.
Cerro Giner, Jaime del, Barrientos Cruz, Antonio, Valente, João, Sanz Muñoz, David   +3 more
core  

Vision-based Navigation Using Landmark Recognition for Unmanned Aerial Vehicles [PDF]

, 2014
This thesis describes a new approach for a vision-based positioning system for Un- manned Aerial Vehicles using a recognition method based on known, robust geo- graphic landmarks.
Mannberg, Mikael
core  

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source

A Tent-Lévy-Based Seagull Optimization Algorithm for the Multi-UAV Collaborative Task Allocation Problem

Applied Sciences
With the rapid advancement of unmanned aerial vehicle technology, the extensive application of multiple unmanned aerial vehicle systems in agriculture has led to significant innovations and benefits.
Zhao Zhou, Huan Liu, Yongqiang Dai, Lijing Qin   +3 more
doaj   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

Identifying the Branch of Kiwifruit Based on Unmanned Aerial Vehicle (UAV) Images Using Deep Learning Method. [PDF]

Sensors (Basel), 2021
Niu Z, Deng J, Zhang X, Zhang J, Pan S, Mu H.   +5 more
europepmc   +1 more source

Development of ground station display and flight management system for low-cost vehicle [PDF]

, 2011
Nowadays, with the development of electronic and communication technologies, more and more low-cost vehicles such as small, light-weight aircraft are widely applied in all kinds of fields.
Pan, Jing
core