Cylindrical Bounded Quaternion Control for Tracking and Surrounding a Ground Target Using UAVs⁎Research Supported by the Ministére de L'Education Nationale, de l'Enseignement Supérieur et de La Recherche, the National Network of Robotics Platforms (ROBOTEX), the Conseil Regional de Lorraine, from France, and the CONACYT from Mexico. Issue 2 (2020)