title: A new system for three-dimensional kinematic trajectory acquisition and analysis--II. Digital orthogonal integration phase-detection technique.
abstract: This paper describes a new technique for phase detection of multichannel ultrasonic signals. This technique is called digital orthogonal integration phase detection, and it has been applied in a new gait analysis system for multipoint kinematic trajectory acquisition and analysis. It is also suitable for separating different signals from a narrow bandwidth frequency range.
authors.affiliation: Department of Modern Physics, University of Science and Technology of China, Hefei, PR China.
authors.forename: Y
authors.initials: Y
authors.lastname: Zejie
authors.forename: Y
authors.initials: Y
authors.lastname: Yanming
authors.forename: L
authors.initials: L
authors.lastname: Wenlian
authors.forename: W
authors.initials: W
authors.lastname: Qihang
mesh_terms: D001703:Biophysics / Q000379:methods* / Q000706:statistics & numerical data; D003201:Computers; D005069:Evaluation Studies as Topic; D005684:Gait / Q000502:physiology*; D006801:Humans; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted; D014465:Ultrasonics