Proceedings PaperWindow-heating effects on airborne infrared system calibration
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Window heating effects are an important consideration in the design and development of airborne missile seeker systems. This paper describes how sharply rising window temperatures can adversely affect detector performance during the seeker homing phase. Initially in the design approach, equations are formulated to calculate target and window radiance on the detector elements for given parameters relevant to target signature, flight aerodynamics, and seeker optics. Using these derived equations, the radiance profiles are plotted as a function of seeker flight time for a typical set of the aforementioned parameters. Then possible design trade-offs and seeker system modifications are discussed that reduce and/or negate window heating effects.