Scattering and emission polarization simulation for simple objects

Changhyuk An; Kyle J. Zeringue

doi:10.1117/12.543492

15 July 2004 Scattering and emission polarization simulation for simple objects

Changhyuk An, Kyle J. Zeringue

Proceedings Volume 5432, Polarization: Measurement, Analysis, and Remote Sensing VI; (2004) https://doi.org/10.1117/12.543492
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

We have developed a scattering and emission polarization model. The scattering model is based on the vector Kirchhoff diffraction equation. For the emission polarization model, we use the Kirchhoff law for opaque materials, where the directional emissivity is assumed to be the same as Fresnel parallel and perpendicular transmittance. It is assumed that the emitted radiation from each facet has no relation with the radiation from neighboring facets. The roughness of the surface is treated statistically using the rms roughness height and the autocorrelation length. A Gaussian distribution is assumed for the roughness facet normal vectors. Shadowing by neighboring facets is also included in the model. We compute look-up tables for the scattering Mueller matrix and emission Stokes parameters for all incident and scattering (or emission) angles. The look-up tables are used for simulating the scattering and emission polarization signatures of objects. Polarization images of scattering, self-emission, and combination of scattering and emission are studied for Aluminum objects of various roughnesses and for various wavebands. The results show that the surface roughness is an important factor to determine the intensity and polarization. Our simulation results agree with polarization field data in that solar reflection has larger cancellation effect on MW IR polarization signatures than LW IR.

Citation Download Citation

Changhyuk An and Kyle J. Zeringue "Scattering and emission polarization simulation for simple objects", Proc. SPIE 5432, Polarization: Measurement, Analysis, and Remote Sensing VI, (15 July 2004); https://doi.org/10.1117/12.543492

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