Results 61 to 70 of about 115,291 (290)

Towards a ground navigation system based in visual feedback provided by a mini UAV [PDF]

, 2012
This paper addresses initial efforts to develop a navigation system for ground vehicles supported by visual feedback from a mini aerial vehicle. A visual-based algorithm computes the ground vehicle pose in the world frame, as well as possible obstacles ...
Barrientos Cruz, Antonio, Chill, Rigoberto, Garzón Oviedo, Mario Andrei, Pereira Valente, Joao Ricardo, Zapata, David   +4 more
core  

Routing Unmanned Vehicles in GPS-Denied Environments

, 2017
Most of the routing algorithms for unmanned vehicles, that arise in data gathering and monitoring applications in the literature, rely on the Global Positioning System (GPS) information for localization.
Misra, Sohum, Rathinam, Sivakumar, Sharma, Rajnikant, Sundar, Kaarthik   +3 more
core   +1 more source

Companion Unmanned Aerial Vehicles: A Survey

CoRR, 2020
14 pages, 3 ...
Chun Fui Liew, Takehisa Yairi
openaire   +2 more sources

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

A Three-Branch Time-Frequency Feature Fusion Method Based on Terahertz Signals for Identifying Delamination Defects in Composite Materials

Sensors
Composite materials are critical components in advanced equipment such as aerospace, however, delamination defects that readily arise during manufacturing and in service present serious risks to equipment safety.
Shengkai Yan, Jianguo Gao, Qiang Wang, Qiuhan Liu, Jiayang Yu, Jiajin Li, Gaocheng Chen   +6 more
doaj   +1 more source

LMI-based feedback suppression of external disturbances for the RUAV [PDF]

, 2010
This paper introduces the stability and controllability augmentation system design for the rotorcraft-based unmanned aerial vehicle. The algorithm of a static output feedback loop shaping for exogenous disturbance suppression of the rotorcraft-based ...
Gorbatyuk, O. D., Tunik, A. A.
core  

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source

A Quality Evaluation Method for Drone Swarm Command and Control Networks Based on Complex Network

Drones
To address the issues of structural diversity, modeling complexity, and the lack of evaluation methods in drone swarm command and control (C2) networks, this paper proposes a complex network-based quality evaluation method for drone swarm C2 networks ...
Zijun Zhao, Shitao Chen, Le Ru, Gang Hu, Wenfei Wang   +4 more
doaj   +1 more source

Research on a Multiple Mediation Effect Model for Rocket Engine Quality Assessment Based on the SGL Penalty Function [PDF]

Hangkong bingqi
To tackle the challenges posed by intricate associations among multidimensional indicators， ambiguous transmission pathways， and the identification of pivotal elements in assessing liquid rocket engine quality， a structural equation model is developed ...
Wang Yuhui, Xu Sining, Cheng Xiangjun, Yang Qianjun
doaj   +1 more source