Infrared focal plane array technology

Article Abstract:

Infrared focal plane arrays (IRFPAs), integrated two-dimensional arrays of detectors on the focal plane with multiplexed readouts, are a major component in advanced infrared imaging systems. Focal plane array technology's goal is to use the integrated circuit approach to satisfy the need for very large detector arrays. Benefits of using integrated circuits include simplicity, reliability, and reduced costs. Some of the functions an FPA design must consider are photon detection, charge storage, and multiplexed readout. Future developments are expected to focus on larger area, smaller pixel, higher sensitivity devices that can function as the basic components for advanced imaging systems.

Integrated circuits, Industrial research, Product introduction, Imaging systems, Research and Development, New Technique, Imaging Technology, Infrared Technology

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On the number of Costas arrays as a function of array size

Article Abstract:

The n of a Costas array of n dots C(n) is extended to 17 to prove that the number of Costas arrays is not a monotonic increasing function of array size. The number of arrays peaks at n equal to 16, as is demonstrated by a probabilistic estimation formula and a comparison of estimates to exact C(n) data. The developed formula also tracks known values of C(n) within 5-6 percent.

Evaluation, Comparison, Accuracy, Approximation, Function Analysis

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