Calculation of the contribution of the nonuniformity of the scene projector to the nonuniformity of the output image of a test article

Brian P. Beecken; T. James Belich

doi:10.1117/12.316361

13 July 1998 Calculation of the contribution of the nonuniformity of the scene projector to the nonuniformity of the output image of a test article

Brian P. Beecken, T. James Belich

Author Affiliations +

Proceedings Volume 3368, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing III; (1998) https://doi.org/10.1117/12.316361
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

The inherent non-uniformity of a Wideband Infrared Scene Projector (WISP) necessitates an analytical prediction of the contribution of the scene projector's non-uniformity to a test article's output image non-uniformity. A mathematical model has been developed to calculate this non-uniformity based upon a number of input parameters. The output image non-uniformity is dependent on both the non-uniformity of the scene projector and the test article, as well as a weighting factor that results from the relative contribution of the different emitters to the individual detector elements. It is through this weighting factor that parameters such as the sampling ratio, the optical blur of the emitters on the detector' focal plane array, the fill factor of the detector array, and the alignment of the emitters with respect to the detector elements affect the non-uniformity of the output image. Using this model, a theoretical limit for the maximum output image non-uniformity can be calculated for particular values of the scene projector's non-uniformity and the test article's non- uniformity. Realistic situations likely to be encountered during simulation testing were all found to be below the maximum. In order to make this model a useful tool for the laboratory environment, a computer program has been written that calculates the output image non-uniformity based on a given set of input parameters and a numerical approximation of the weighting factor.

Citation Download Citation

Brian P. Beecken and T. James Belich "Calculation of the contribution of the nonuniformity of the scene projector to the nonuniformity of the output image of a test article", Proc. SPIE 3368, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing III, (13 July 1998); https://doi.org/10.1117/12.316361

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Projection systems

Detector arrays

Optical alignment

Signal detection

Software

Staring arrays

Show All Keywords

Keywords/Phrases

Search In:

Publication Years