Measurement and analysis of optical surface properties for input to ShipIR

David A. Vaitekunas; Jim Jafolla; Paul McKenna; Martin Szczesniak

doi:10.1117/12.820055

22 April 2009 Measurement and analysis of optical surface properties for input to ShipIR

David A. Vaitekunas, Jim Jafolla, Paul McKenna, Martin Szczesniak

Proceedings Volume 7300, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XX; 73000M (2009) https://doi.org/10.1117/12.820055
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

A new standard for the measurement and analysis of optical surface properties for input to the ShipIR model (Vaitekunas, 2002) are developed and tested using paint specimens taken from the unclassified Canadian research vessel (CFAV Quest). The theory and equations used to convert the in-lab surface property measurements into ShipIR model input parameters are described. The resultant data consists of two thermal model input parameters, solar absorptivity (α_s) and thermal emissivity epsilon;_Τ), and a series of in-band surface properties, the nominal emissivity (ε), nominal specular reflectance (ρ_s), angular lobe-width (e) and a grazing-angle (b) parameter. Original sample measurements in 2004 are supplemented with new hemispherical directional reflectance (HDR) and bi-directional reflectance distribution function (BRDF) measurements in 2008 to track the changes in the paint specimens and expand the analysis to include additional input parameters to ShipIR. A more rigorous treatment of the BRDF model relates the HDR and BRDF measurements to a single surface roughness parameter (σ).

Citation Download Citation

David A. Vaitekunas, Jim Jafolla, Paul McKenna, and Martin Szczesniak "Measurement and analysis of optical surface properties for input to ShipIR", Proc. SPIE 7300, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XX, 73000M (22 April 2009); https://doi.org/10.1117/12.820055

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