An Optical Mask System Of Target To Background Discrimination

Dennis McCaughey

doi:10.1117/12.955840

9 November 1977 An Optical Mask System Of Target To Background Discrimination

Dennis McCaughey

Proceedings Volume 0124, Modern Utilization of Infrared Technology III; (1977) https://doi.org/10.1117/12.955840
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

Abstract

An optical method of suppressing an imaging system's response to a slowly varying background interference is described. The method involves masking the photodetectors with a photochromic plate and a model for this system is developed. The photochromic mask is shown to be equivalent to an optical Automatic Gain Control (AGC) device. The time response of such a system is developed and simulation results are presented that demonstrate the feasibility of this approach.

Citation Download Citation

Dennis McCaughey "An Optical Mask System Of Target To Background Discrimination", Proc. SPIE 0124, Modern Utilization of Infrared Technology III, (9 November 1977); https://doi.org/10.1117/12.955840

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