“Smartphone based 3D PDR System Development and its Performance Analysis in Various Indoor EnvironmentOct 1, 2014·Beomju Shin,Seok Lee,Chulki Kim,Jaehun KimChangdon KeeTaikjin Lee· 0 min readLast updated on Oct 1, 2014 AuthorsBeomju ShinPh.DAuthorsChangdon KeeProfessor EmeritusAuthorsTaikjin LeePh.D← “Precise Orbit Determination of LEO Satellites with Less than Four Visible GPS Satellites Oct 1, 2014“Inertial Aided Cycle Slip Detection by Considering Satellite Geometry for Land Vehicle Sep 1, 2014 →