Spectral Discrimination For Long Range Search/Track Infrared Systems

Louis A. Williams Jr.

doi:10.1117/12.932835

7 December 1981 Spectral Discrimination For Long Range Search/Track Infrared Systems

Louis A. Williams Jr.

Proceedings Volume 0292, Processing of Images and Data from Optical Sensors; (1981) https://doi.org/10.1117/12.932835
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

One of the areas where future improvements are anticipated in IR search/track systems is in longer range performance based on improved clutter rejection techniques. These long range search/track (LRST) IR systems will be needed in the future to counter advanced threats which are now in the early stages of development. In order to achieve longer range performance, system threshold sensitivity must be increased. Without improved clutter rejection techniques, increasing the system sensitivity will result in an unacceptable false alarm rate due to background clutter. The problem specifically addressed in this paper is clutter rejection techniques for LRST systems used to detect advanced threats targeted on surface ships. The techniques are applicable to other scenarios with minor modifications. Spectral discrimination must be added to classical spatial and temporal discrimination in order to reduce the false alarm rate against sunglint and operate at a low threshold setting in heavy clutter regions. Both two and three color systems have been evaluated and the design of a two-color system studied in detail.

Citation Download Citation

Louis A. Williams Jr. "Spectral Discrimination For Long Range Search/Track Infrared Systems", Proc. SPIE 0292, Processing of Images and Data from Optical Sensors, (7 December 1981); https://doi.org/10.1117/12.932835

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KEYWORDS

Clouds

Infrared search and track

Visibility

Infrared imaging

Image processing

Target detection

Optical sensors

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