WiFi Based Robust Positioning System in Large Scale and Weak Signal Environment Sep 1, 2017· Beomju Shin , Boseon Yu , Jaewon Bang Changdon Kee Taikjin Lee · 0 min read Last updated on Sep 1, 2017 Authors Beomju Shin Ph.D Authors Changdon Kee Professor Authors Taikjin Lee Ph.D ← WiFi and PDR based Robust SLAM Implementation using Surface Correlation Sep 1, 2017 Accuracy Improvement of DGPS for Low-Cost Single-Frequency Receiver Using Modified Flächen Korrektur Parameter Correction Jul 1, 2017 →