51 documents found, page 1 of 6
A Drone Secure Handover Architecture validated in a Software in the Loop Enviro...
Vasconcelos Filho, Ênio; Gomes, Filipe; Monteiro, Stéphane; Penna, Sergio; Koubaa, Anis; Tovar, Eduardo; Severino, RicardoThe flight and control capabilities of uncrewed aerial vehicles (UAVs) have increased significantly with recent research for civilian and commercial applications. As a result, these devices are becoming capable of flying ever greater distances, accomplishing flights beyond line of sight (BVLOS). However, given the need for safety guarantees, these flights are increasingly subject to regulations. Handover operat...
Cooperative Vehicular Platooning: A Multi- Dimensional Survey Towards Enhanced ...
Vasconcelos Filho, Ênio; Santos, Pedro Miguel; Koubaa, Anis; Tovar, Eduardo; Severino, RicardoCooperative Vehicular Platooning (Co-VP) is a paradigmatic example of a Cooperative Cyber-Physical System (Co-CPS), which holds the potential to vastly improve road safety by partially removing humans from the driving task. However, the challenges are substantial, as the domain involves several topics, such as control theory, communications, vehicle dynamics, security, and traffic engineering, that must be coup...
RosDrive: An Open-Source ROS-Based Vehicular Simulator for STEM Control Systems...
Vasconcelos Filho, Ênio; Yudi, Jones; Abdelkader, Mohamed; Koubaa, Anis; Tovar, EduardoThe study of control systems in the engineering courses is quite complex, given the difficulty of some teachers in exemplifying and allowing the student to understand how such systems affect the environment. In this context, the STEM methodologies aim to fill this gap between the traditional classes and the student comprehension of the topic through the active learning process. Realistic open-source simulators ...
Improving the Performance of Cooperative Platooning with Restricted Message Tri...
Vasconcelos Filho, Ênio; Santos, Pedro Miguel; Severino, Ricardo; Koubaa, Anis; Tovar, EduardoCooperative Vehicular Platooning (Co-VP) is one of the most prominent and challenging applications of Intelligent Traffic Systems. To support such vehicular communications, the ETSI ITS G5 standard specifies event-based communication profiles, triggered by kinematic parameters such as speed. The standard defines a set of threshold values for such triggers but no careful assessment in realistic platooning scenar...
An Integrated Lateral and Longitudinal Look Ahead Controller for Cooperative Ve...
Vasconcelos Filho, Ênio; Koubaa, Anis; Severino, Ricardo; Tovar, EduardoCooperative Vehicular Platooning (CoVP), has been emerging as a challenging Intelligent Traffic Systems application, promising to bring-about several safety and societal benefits. Relying on V2V communications to control such cooperative and automated actions brings several advantages. In this work, we present a Look Ahead PID controller for CoVP that solely relies upon V2V communications, together with a metho...
On Feasibility of Multichannel Reconfigurable Wireless Sensor Networks Under Re...
Ben Aissa, Yousra; Bachir, Abdelmalik; Khalgui, Mohamed; Koubaa, Anis; Li, Zhiwu; Qu, TingThis paper deals with the medium between two reconfigurable sensor nodes characterized by radio interfaces that support multiple channels for exchanging real-time messages under energy constraints. These constraints are violated if the consumed energy in transmission is higher than the remaining quantity of energy. A reconfiguration, i.e., any addition or removal of tasks in devices and consequently of messages...
DeepSpatial: Intelligent Spatial Sensor to Perception of Things
Simões Teixeira, Marco António; Neves JR, Flávio; Koubaa, Anis; Ramos de Arruda, Lúcia Valéria; Schneider de Oliveira, AndréThis paper discusses a spatial sensor to identify and track objects in the environment. The sensor is composed of an RGB-D camera that provides point cloud and RGB images and an egomotion sensor able to identify its displacement in the environment. The proposed sensor also incorporates a data processing strategy developed by the authors to conferring to the sensor different skills. The adopted approach is based...
Unmanned Aerial Systems: Theoretical Foundation and Applications
Koubaa, Anis; Azar, AhmadUnmanned Aerial Systems: Theoretical Foundation and Applications presents some of the latest innovative approaches to drones from the point-of-view of dynamic modeling, system analysis, optimization, control, communications, 3D-mapping, search and rescue, surveillance, farmland and construction monitoring, and more. With the emergence of low-cost UAS, a vast array of research works in academia and products in t...
Towards a Cooperative Robotic Platooning Testbed
Vasconcelos Filho, Ênio; Nuno, Guedes; Mestre, Miguel; Vieira, Bruno; Severino, Ricardo; Koubaa, Anis; Tovar, EduardoThe deployment of information and communication technologies in vehicles and into the transportation infrastructure in general, holds the promise of significant improvements to traffic safety and efficiency. The ETSI ITS-G5 standard presents itself as a viable and already available solution, to enable such intelligent social and mobility scenarios in the near future, including cooperative and autonomous vehicle...
AI-based Pilgrim Detection using Convolutional Neural Networks
Jabra, Marwa Ben; Ammar, Adel; Koubaa, Anis; Cheikhrouhou, Omar; Hamam, HabibPilgrimage represents the most important Islamic religious gathering in the world where millions of pilgrims visit the holy places of Makkah and Madinah to perform their rituals. The safety and security of pilgrims is the highest priority for the authorities. In Makkah, 5000 cameras are spread around the holy mosques for monitoring pilgrims, but it is almost impossible to track all events by humans considering ...