Alejandro Lindo, María del Carmen Pérez, Jesús Ureña, David Gualda, Enrique Garcia, Jose M. Villadangos. Ultrasonic signal acquisition module for smartphone indoor positioning. In Antoni Grau, Herminio Martínez, editors, Proceedings of the 2014 IEEE Emerging Technology and Factory Automation, ETFA 2014, Barcelona, Spain, September 16-19, 2014. pages 1-4, IEEE, 2014. [doi]
Abstract is missing.