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Range resolution improvement of phase coded lidar system utilizing detector characteristics for short codes acquirement

  • China Electronic Technology Group
  • Nanjing University of Information Science & Technology
  • Harbin Institute of Technology
  • Tongyu Communication Inc.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The conventional phase coded lidar systems require the collection of every returned laser pulse and are restricted in range resolution by sampling frequency and subpulse width. A phase coded lidar system with high range resolution is proposed with the accumulated m-sequence acquisition method by utilizing detector characteristics for signal detection. The detector accumulates kN-1 or kN+1 bits of the emitted laser sequence to deduce the a single bit of the sequence. The indoor experiment achieved 2 us resolution with the sampling period of 28 and 32 us by employing a 15-bit m-sequence. This method achieves the acquisition of m-sequence with narrow subpulse width whereas the sampling frequency is kept low. The experiment results showed an approach to implement the phase coded imaging lidar into practical application.

Original languageEnglish
Title of host publicationElectro-Optical Remote Sensing, Photonic Technologies, and Applications VIII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing II
EditorsGary J. Bishop, Gary Kamerman, John D. Gonglewski, Ainsley Killey, Ove Steinvall
PublisherSPIE
ISBN (Electronic)9781628413137
DOIs
StatePublished - 2014
EventElectro-Optical Remote Sensing, Photonic Technologies, and Applications VIII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing II - Amsterdam, Netherlands
Duration: 22 Sep 201423 Sep 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9250
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceElectro-Optical Remote Sensing, Photonic Technologies, and Applications VIII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing II
Country/TerritoryNetherlands
CityAmsterdam
Period22/09/1423/09/14

Keywords

  • Phased coded lidar
  • Resolution improvement
  • short subpulse of m-sequence acquirement

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