Accession Number:

ADA282976

Title:

Measurement of Modulation Transfer Function of Focal Plane Arrays and Imaging Systems

Descriptive Note:

Final rept.

Corporate Author:

UNIVERSITY OF CENTRAL FLORIDA ORLANDO CENTER FOR RESEARCH IN ELECTRO-OPTICS AND LASERS

Personal Author(s):

Report Date:

1994-05-11

Pagination or Media Count:

39.0

Abstract:

A method for measuring the MTF of focal-plane arrays FPAs has been developed which uses the statistical properties of laser speckle. The entire area of the focal plane is characterized, and no optics are required for target projection. The random nature of the test pattern avoids phasing effects between the target and the detector-array structure, which greatly relaxes alignment tolerances as compared to other methods. The technique is applicable to arrays that have intentional nonlinearity of response, as well as to those arrays that are inherently linear. The test can be performed on any focal-plane configuration, either one dimensional lD or two dimensional 2D. The data processing is usually performed by an off-line computer. However, the test is also useful for real-time diagnostics, to facilitate adjustment of focal-plane operating parameters. In the real-time case, the necessary signal processing can be performed on a digital oscilloscope

Subject Categories:

  • Cybernetics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE