1 November 2010 Modeling and analysis of a high-performance midwave infrared panoramic periscope
Author Affiliations +
A high-resolution midwave infrared panoramic periscope sensor system has been developed. The sensor includes an f/2.5 catadioptric optical system that provides a field of view with 360-deg horizontal azimuth and -10- to +30-deg elevation without requiring moving components (e.g., rotating mirrors). The focal plane is a 2048×2048, 15-µm-pitch InSb detector operating at 80 K. An onboard thermoelectric reference source allows for real-time nonuniformity correction using the two-point correction method. The entire system (detector-Dewar assembly, cooler, electronics, and optics) is packaged to fit in an 8-in.-high, 6.5-in.-diameter volume. This work describes both the system optics and the electronics and presents sample imagery. We model both the sensor's radiometric performance, quantified by the noise-equivalent temperature difference, and its resolution performance. Model predictions are then compared with estimates obtained from experimental data. The ability of the system to resolve targets as a function of imaged spatial frequency is also presented.
© (2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Jonathan M. Nichols, Jonathan M. Nichols, James R. Waterman, James R. Waterman, Raghu P. Menon, Raghu P. Menon, John Devitt, John Devitt, } "Modeling and analysis of a high-performance midwave infrared panoramic periscope," Optical Engineering 49(11), 113202 (1 November 2010). https://doi.org/10.1117/1.3505866 . Submission:


Back to Top