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Updated: Jun 15, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
Infrared surveillance. 2: Continuous-time signal processors
Abstract:
A number of infrared passive surveillance receivers are analyzed with the theory developed in a previous paper. The specific problem of interest is the detection of low-contrast point source targets against high-contrast structured backgrounds. A new and promising approach to signal processing is proposed for minimizing background-induced false alarms while retaining maximum target detection sensitivity. We show that time-delay and integration detector technology may afford us excess detector sensitivity that we can intentionally sacrifice in the interest of enhanced performance against structured scenes.
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