1. Department of Electrical and Computer Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
2. Associação para o Desenvolvimento da Aerodinâmica Industrial—ADAI, Department of Mechanical Engineering, University of Coimbra, Rua Luís Reis Santos, Pólo II, 3030-788 Coimbra, Portugal
3. Institute of Systems and Robotics, University of Coimbra, 3030-290 Coimbra, Portugal