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Proceedings Article

Long distance high accuracy 3-D laser radar and person identification

[+] Author Affiliations
J. F. Andersen, H. Heiselberg

Danish Defense Research Establishment (Denmark)

J. Busck

Danish Defense Research Establishment (Denmark) and Technical Univ. of Denmark (Denmark)

Proc. SPIE 5791, Laser Radar Technology and Applications X, 9 (August 05, 2005); doi:10.1117/12.604345
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From Conference Volume 5791

  • Laser Radar Technology and Applications X
  • Gary W. Kamerman
  • Orlando, Florida, USA | March 28, 2005

abstract

Results from our fast and high accuracy 3-D laser radar are given at distances up to 500 m. The system is based on gated viewing with range accuracy below 1 mm under optimal circumstances. It consists of a high sensitivity, fast, intensified CCD camera, and an Nd:YAG passively Q-switched 32.4 kHz pulsed green laser at 532 nm. The CCD has 752×582 pixels. Camera shutter and delay steps are controlled in steps of 100 ps. Each laser pulse triggers the camera delay and shutter. A 3-D image is constructed from a sequence of 50-100 2-D reflectivity images, where each frame integrates ~700 laser pulses on the CCD. In 50 Hz video mode we record a 2-D sequence in a second and process a 3-D image in a few seconds. We compare 3-D images at short to long distances and quantify the degree of person identification in 3-D. Turbulence, vibrations and system errors are found to limit a successful PID to distances shorter than ~500m for our prototype system.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

J. F. Andersen ; J. Busck and H. Heiselberg
"Long distance high accuracy 3-D laser radar and person identification", Proc. SPIE 5791, Laser Radar Technology and Applications X, 9 (August 05, 2005); doi:10.1117/12.604345; http://dx.doi.org/10.1117/12.604345


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