Polarization active imaging

Philippe Clemenceau; Aristide C. Dogariu; John S. Stryjewski

doi:10.1117/12.397811

5 September 2000 Polarization active imaging

Philippe Clemenceau, Aristide C. Dogariu, John S. Stryjewski

Proceedings Volume 4035, Laser Radar Technology and Applications V; (2000) https://doi.org/10.1117/12.397811
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

The purpose of active imaging system is to provide discrimination at long ranges independently from the surrounding illumination by using and controlling its own light source. Parameters such as the Doppler shift for coherent devices, the range, or the intensity of the light back scattered by objects have already been used to encode images. However, another parameter characterizing the electromagnetic field can help to discriminate the target: its polarization. In this paper we demonstrate that images resulting from the analysis of the polarization of light can offer better contrasts than classical images encoded by the intensity of light back-scattered. The emitting part of the imaging polarimeter built at CREOL (Polarization State Generator) is a doubled YAG pulsed laser with external polarization controllers. At the receiving part, the Polarization State Analyzer separates the incoming light so as to provide two crossed polarized images of the target.These images are acquired simultaneously by two high-resolution progressive scan digital cameras controlled by a computer. Afterwards, the computer processes the acquired data and displays two new images encoded by polarization parameters (depolarization ratio for example). In several examples and experiments, the influence of the geometry of the target (roughness, shape) on the incident state of polarization will be discussed.

Citation Download Citation

Philippe Clemenceau, Aristide C. Dogariu, and John S. Stryjewski "Polarization active imaging", Proc. SPIE 4035, Laser Radar Technology and Applications V, (5 September 2000); https://doi.org/10.1117/12.397811

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available