Relationship of PCU to MRTD

Dieter Lohrmann; Gwendolyn W. Newsome

doi:10.1117/12.241948

10 June 1996 Relationship of PCU to MRTD

Dieter Lohrmann, Gwendolyn W. Newsome

Proceedings Volume 2743, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VII; (1996) https://doi.org/10.1117/12.241948
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

Post correction uniformity (PCU) schemes are employed in some existing imaging systems to correct spatial nonuniformities. The focal plane arrays in the imaging system may either be a scanning or a staring focal plane array. PCU specifications may be included as part of the full FPA specification. Current PCU specs typically designate a level of fixed pattern noise relative to temporal noise at various selected background temperatures. The selected temperatures are within the expected range of target temperatures to be seen. An issue seems to be the difficulty of keeping the post correction fixed pattern noise levels within specified levels at all specified background temperatures. This paper examines the effectiveness of the tow point linear gain-offset correction method for systems with nearly linear response, and relates post correction uniformity to MRTD performance through the 3D noise model. Such a relationship is expected to facilitate FPA developers in specifying FPA PCU requirements, tracking and identifying sources of MRTD failures in FPAs, and quantifying the benefits of this particular PCU scheme.

Citation Download Citation

Dieter Lohrmann and Gwendolyn W. Newsome "Relationship of PCU to MRTD", Proc. SPIE 2743, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VII, (10 June 1996); https://doi.org/10.1117/12.241948

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KEYWORDS

Sensors

Staring arrays

Minimum resolvable temperature difference

3D modeling

Computer simulations

Imaging systems

Systems modeling

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