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About

About

I was born in Porto in 1981 and I lived my childhood in my parents home village called S. Paio de Oleiros. After I conclude my high school in technological course of electronics at Escola Dr. Manuel Gomes de Almeida in 1999, I joined ISEP - Higher Institute of Engineering of Porto in Bachelor's degree of Electrical Engineering, branch of Electronics and Computers. In 2001 I joined the Autonomous System Laboratory that just started of research in robotics. In 2007 I concluded the Bachelor's degree and, two years later, at the same institution, I obtained the Master's degree in Electrical Engineering, branch of Autonomous Systems. In 2010 I was invited by ISEP to teach real time operating systems in the Electric Engineering Department (as Invited Assistant). In 2016 I was contracted as a researcher by INESCTEC to work in the Center for Autonomous Systems (CRAS). I'm now working on the H2020 UNEXMIN Project doing research on science and technology in robotics to be applied on flooded mines.

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Details

Details

029
Publications

2023

Precipitation-driven gamma radiation enhancement over the Atlantic Ocean

Authors
Barbosa, S; Dias, N; Almeida, C; Silva, G; Ferreira, A; Camilo, A; Silva, E;

Publication
Journal of Geophysical Research: Atmospheres

Abstract

2022

An holistic monitoring system for measurement of the atmospheric electric field over the ocean - The SAIL campaign

Authors
Barbosa, S; Dias, N; Almeida, C; Amaral, G; Ferreira, A; Lima, L; Silva, I; Martins, A; Almeida, J; Camilo, M; Silva, E;

Publication
OCEANS 2022

Abstract
The atmospheric electric field is a key characteristic of the Earth system. Despite its relevance, oceanic measurements of the atmospheric electric field are scarce, as typically oceanic measurements tend to be focused on ocean properties rather than on the atmosphere above. This motivated the set-up of an innovative campaign on board the sail ship NRP Sagres focused on the measurement of the atmospheric electric field in the marine boundary layer. This paper describes the monitoring system that was developed to measure the atmospheric electric field during the planned circumnavigation expedition of the sail ship NRP Sagres. © 2022 IEEE.

2021

Hyperspectral Imaging System for Marine Litter Detection

Authors
Freitas S.; Silva H.; Almeida C.; Viegas D.; Amaral A.; Santos T.; Dias A.; Jorge P.A.S.; Pham C.K.; Moutinho J.; Silva E.;

Publication
Oceans Conference Record (IEEE)

Abstract

2020

Underwater Localization System Combining iUSBL with Dynamic SBL in ¡VAMOS! Trials

Authors
Almeida, J; Matias, B; Ferreira, A; Almeida, C; Martins, A; Silva, E;

Publication
SENSORS

Abstract
Emerging opportunities in the exploration of inland water bodies, such as underwater mining of flooded open pit mines, require accurate real-time positioning of multiple underwater assets. In the mining operation scenarios, operational requirements deny the application of standard acoustic positioning techniques, posing additional challenges to the localization problem. This paper presents a novel underwater localization solution, implemented for the ¡VAMOS! project, based on the combination of raw measurements from a short baseline (SBL) array and an inverted ultrashort baseline (iUSBL). An extended Kalman filter (EKF), fusing IMU raw measurements, pressure observations, SBL ranges, and USBL directional angles, estimates the localization of an underwater mining vehicle in 6DOF. Sensor bias and the speed of sound in the water are estimated indirectly by the filter. Moreover, in order to discard acoustic outliers, due to multipath reflections in such a confined and cluttered space, a data association layer and a dynamic SBL master selection heuristic were implemented. To demonstrate the advantage of this new technique, results obtained in the field, during the ¡VAMOS! underwater mining field trials, are presented and discussed.

2019

3D UNDERWATER MINE MODELLING in the ¡vAMOS! PROJECT

Authors
Bleier, M; Almeida, C; Ferreira, A; Pereira, R; Matias, B; Almeida, J; Pidgeon, J; van der Lucht, J; Schilling, K; Martins, A; Silva, E; Nuechter, A;

Publication
UNDERWATER 3D RECORDING AND MODELLING: A TOOL FOR MODERN APPLICATIONS AND CH RECORDING

Abstract
The project Viable Alternative Mine Operating System (¡VAMOS!) develops a novel underwater mining technique for extracting inland mineral deposits in flooded open-cut mines. From a floating launch and recovery vessel a remotely-operated underwater mining vehicle with a roadheader cutting machine is deployed. The cut material is transported to the surface via a flexible riser hose. Since there is no direct intervisibility between the operator and the mining machine, the data of the sensor systems can only be perceived via a computer interface. Therefore, part of the efforts in the project focus on enhancing the situational awareness of the operator by providing a 3D model of the mine combined with representations of the mining equipment and sensor data. We present a method how a positioning and navigation system, perception system and mapping system can be used to create a replica of the physical system and mine environment in Virtual Reality (VR) in order to assist remote control. This approach is beneficial because it allows visualizing different sensor information and data in a consistent interface, and enables showing the complete context of the mining site even if only part of the mine is currently observed by surveying equipment. We demonstrate how the system is used during tele-operation and show results achieved during the field trials of the complete system in Silvermines, Ireland. © 2019 Copernicus GmbH. All righhts reserved.