The potential threat of recently-advertised anti-ship missiles has instigated research at the United States (US) Naval
Research Laboratory (NRL) into the improvement of measurement techniques for visual band countermeasures. The
goal of measurements is the collection of radiometric imagery for use in the building and validation of digital models of
expendable countermeasures. This paper will present an overview of measurement requirements unique to the visual
band and differences between visual band and infrared (IR) band measurements. A review of the metrics used to
characterize signatures in the visible band will be presented and contrasted to those commonly used in IR band
measurements. For example, the visual band measurements require higher fidelity characterization of the background,
including improved high-transmittance measurements and better characterization of solar conditions to correlate results
more closely with changes in the environment. The range of relevant engagement angles has also been expanded to
include higher altitude measurements of targets and countermeasures. In addition to the discussion of measurement
techniques, a top-level qualitative summary of modeling approaches will be presented. No quantitative results or data
will be presented.
Robert Gignilliat, Kathleen Tepfer, Rebekah F. Wilson, and Thomas M. Taczak, "Updates on measurements and modeling techniques for expendable countermeasures," Proc. SPIE 9989, Technologies for Optical Countermeasures XIII, 99890P (Presented at SPIE Security + Defence: September 28, 2016; Published: 21 October 2016); https://doi.org/10.1117/12.2245174.
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