Results 41 to 50 of about 6,887 (240)

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Position Spoofing Attacks on Unmanned Surface Vehicles

Journal of Marine Science and Engineering
Unmanned surface vehicles (USVs) are equipped with numerous sensors, and data is transmitted through networks. Attackers may remotely compromise unmanned surface vehicle (USV) systems and commit criminal acts via networks, causing USVs to deviate from ...
Jia Wang, Yang Xiao, Tieshan Li, Philip C. L. Chen   +3 more
doaj   +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

Cooperative path planning of USV and UAV swarms under multiple constraints

Zhongguo Jianchuan Yanjiu, 2021
ObjectivesFor achieving navigational safety and continuous communication link between swarms of unmanned marine vehicle (UMV) during mission execution, the cooperative path planning of unmanned surface vehicle (USV) and unmanned aerial vehicle (UAV ...
Yueqi HOU, Hao TAO, Junbin GONG, Xiaolong LIANG, Nuo ZHANG   +4 more
doaj   +1 more source

DRIVE‐SAFE: Data‐Driven Robustness and Informed Validation for Evolving Specifications via Formal Evaluation

Advanced Robotics Research, EarlyView.
DRIVE‐SAFE evaluates learning‐based, black‐box autonomous driving policies against evolving temporal safety requirements using Signal Temporal Logic robustness metrics. It aggregates distributional robustness measures with domain‐informed weights to guide iterative retraining.
Kristy Sakano, Jianyu An, Dinesh Manocha, Huan Xu   +3 more
wiley   +1 more source

The implications of military unmanned maritime vehicles on the international maritime security order: from challenge to re-balance

Frontiers in Political Science
In recent years, the continuous application and expansion of unmanned intelligent technology in military maritime equipment have spurred the rapid development of military unmanned maritime vehicles, represented by Unmanned Surface Vehicles and Unmanned ...
Xidi Chen, Lun Li
doaj   +1 more source

Coordinated path-following control for networked unmanned surface vehicles

International Journal of Advanced Robotic Systems, 2020
In this article, the coordinated path-following control problem for networked unmanned surface vehicles is investigated. The communication network brings time delays and packet dropouts to the fleet, which will have negative effects on the control ...
Dong-Liang Chen, Guo-Ping Liu, Ru-Bo Zhang, Xingru Qu   +3 more
doaj   +1 more source

A Review of Path Planning for Unmanned Surface Vehicles

Journal of Marine Science and Engineering, 2023
With the continued development of artificial intelligence technology, unmanned surface vehicles (USVs) have attracted the attention of countless domestic and international specialists and academics.
Bowen Xing, Manjiang Yu, Zhenchong Liu, Yinchao Tan, Yue Sun, Bing Li   +5 more
doaj   +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

Towards Realizing Intelligent Coordinated Controllers for Multi-USV Systems Using Abstract Training Environments

Journal of Marine Science and Engineering, 2021
Unmanned autonomous vehicles for various civilian and military applications have become a particularly interesting research area. Despite their many potential applications, a related technological challenge is realizing realistic coordinated autonomous ...
Sulemana Nantogma, Keyu Pan, Weilong Song, Renwei Luo, Yang Xu   +4 more
doaj   +1 more source