title: Differential time domain method improves performance of pulsed laser ranging and three-dimensional imaging.
abstract: A ranging method based on the differential time domain method (DTDM) is proposed in order to improve ranging accuracy and the range of active measurement based on peak discriminator (PD). We develop mathematical models and deduce that zero-crossing sensitivity is an important factor, which affects the ranging error of DTDM. Additionally, zero-crossing sensitivity is determined by delayed time. We carried out relative experiments and obtained the smallest ranging error when delayed time is receiving pulse width. We also compare ranging, three-dimensional (3D) point clouds and depth images based on two methods under same testing conditions. The results show that DTDM is beneficial in improving performance of pulse laser ranging and 3D imaging.
authors.forename: Jie
authors.initials: J
authors.lastname: Cao
authors.forename: Qun
authors.initials: Q
authors.lastname: Hao
authors.forename: Yang
authors.initials: Y
authors.lastname: Cheng
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Peng
authors.forename: Kaiyu
authors.initials: K
authors.lastname: Zhang
authors.forename: Jiaxing
authors.initials: J
authors.lastname: Mu
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
mesh_terms: D021621:Imaging, Three-Dimensional / Q000379:methods*; D007834:Lasers; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors