TY - Front. Optoelectron. A1 - Mark H. BERGEN, Ferdinand S. SCHAAL, Richard KLUKAS, Julian CHENG, Jonathan F. HOLZMAN T1 - Toward the implementation of a universal angle-based optical indoor positioning system Y1 - 2018-07-04 JF - Frontiers of Optoelectronics JO - Front. Optoelectron. SP - 116 EP - 127 VL - 11 IS - 2 UR - https://journal.hep.com.cn/foe N1 - 10.1007/s12200-018-0806-0 ER -