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Proceedings Paper

Polarimetric LIDAR with FRI sampling for target characterization
Author(s): Erandi Wijerathna; Charles D. Creusere; David Voelz; Juan Castorena
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Paper Abstract

Polarimetric LIDAR is a significant tool for current remote sensing applications. In addition, measurement of the full waveform of the LIDAR echo provides improved ranging and target discrimination, although, data storage volume in this approach can be problematic. In the work presented here, we investigated the practical issues related to the implementation of a full waveform LIDAR system to identify polarization characteristics of multiple targets within the footprint of the illumination beam. This work was carried out on a laboratory LIDAR testbed that features a flexible arrangement of targets and the ability to change the target polarization characteristics. Targets with different retardance characteristics were illuminated with a linearly polarized laser beam and the return pulse intensities were analyzed by rotating a linear analyzer polarizer in front of a high-speed detector. Additionally, we explored the applicability and the limitations of applying a sparse sampling approach based on Finite Rate of Innovations (FRI) to compress and recover the characteristic parameters of the pulses reflected from the targets. The pulse parameter values extracted by the FRI analysis were accurate and we successfully distinguished the polarimetric characteristics and the range of multiple targets at different depths within the same beam footprint. We also demonstrated the recovery of an unknown target retardance value from the echoes by applying a Mueller matrix system model.

Paper Details

Date Published: 7 September 2017
PDF: 6 pages
Proc. SPIE 10407, Polarization Science and Remote Sensing VIII, 104070R (7 September 2017); doi: 10.1117/12.2272587
Show Author Affiliations
Erandi Wijerathna, New Mexico State Univ. (United States)
Charles D. Creusere, New Mexico State Univ. (United States)
David Voelz, New Mexico State Univ. (United States)
Juan Castorena, Ford Motor Co. (United States)

Published in SPIE Proceedings Vol. 10407:
Polarization Science and Remote Sensing VIII
Joseph A. Shaw; Frans Snik, Editor(s)

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