Evaluation of the accuracy and precision of orientation determination in an indoor positioning system using infrastructure illumination and PSD sensors. - Álvaro De-La-Llana-Calvo; José Luis Lázaro Galilea; Alfredo Gardel Vicente; Ignacio Bravo Muñoz; Aitor Alcázar-Fernández; Andreea Iamitchi; Rubén Gil-Vera; David Hernández-Puerta (IPIN, 2021)