Sub-millimeter laser ranging results using a pseudo-random code modulation

Joseph M. Kovalik; William H. Farr; Carlos Esproles; Hamid Hemmati

doi:10.1117/12.600831

18 April 2005 Sub-millimeter laser ranging results using a pseudo-random code modulation

Joseph M. Kovalik, William H. Farr, Carlos Esproles, Hamid Hemmati

Proceedings Volume 5712, Free-Space Laser Communication Technologies XVII; (2005) https://doi.org/10.1117/12.600831
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

A laser beam with a pseudo random bit stream pattern amplitude modulation is retro reflected off a target to produce a real time ranging signal using a cross correlation technique. The measured resolution of the system was 0.2 mm with an absolute accuracy of ± 2 mm over 2 m. The use of a modulated retro reflector allows a communications signal to be added to the ranging capability.

Citation Download Citation

Joseph M. Kovalik, William H. Farr, Carlos Esproles, and Hamid Hemmati "Sub-millimeter laser ranging results using a pseudo-random code modulation", Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); https://doi.org/10.1117/12.600831

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