Abstract: Through discrimination of the scattered signal polarization state, a lidar system measures a distance through semi-transparent media by the reception of single or multiple scattered signals from a scattering medium. Combined and overlapped single or multiple scattered light signals from the medium can be separated by exploiting varying polarization characteristics. This removes the traditional laser and detector pulse width limitations that determine the system's operational bandwidth, translating relative depth measurements into the conditions of two surface timing measurements and achieving sub-pulse width resolution.
Type:
Grant
Filed:
March 16, 2017
Date of Patent:
April 26, 2022
Assignees:
THE REGENTS OF THE UNIVERSITY OF COLORADO, ASTRA LIFE, INC.
Inventors:
Jeffrey P. Thayer, Geoffrey Crowley, Andrew W. Gisler, Steven Mitchell, Matthew Hayman