Detection range performance analysis and verification of the long-wavelength infrared optical system for drones

Kwang-Woo Park; Jonghwa Choi; Jian Kang; Siyoun Choi; Kyounghoon Baek

doi:10.1117/12.2670189

14 June 2023 Detection range performance analysis and verification of the long-wavelength infrared optical system for drones

Kwang-Woo Park, Jonghwa Choi, Jian Kang, Siyoun Choi, Kyounghoon Baek

Author Affiliations +

Proceedings Volume 12533, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIV; 1253313 (2023) https://doi.org/10.1117/12.2670189
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

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Abstract

The detection performance of an IR camera was analyzed using GRD analysis and NVTherm to detect a target size of 3m × 6m. The optical system design specifications were set with a F-number of 1.6, focal length range of 76.2mm to 24.456mm, and field of view of 9.1° × 6.1° - 29.9°× 22.0°, using a method to convert recognition range performance into GRD. We measured the image resolution performance of the camera produced based on the analysis results, in a laboratory environment. We installed a 4-bar target (I') with a spatial frequency corresponding to GRD (I) m at target distance A km on an optical collimator and acquired a photographic imagery of bar-target by setting the temperature difference corresponding to the target distance A km for distance simulation. The GRD resolution was defined as the resolution for which the number of clearly resolved images among the 50 acquired images was 80 % or higher (40 images or more). The measurement results confirmed that the GRD target corresponding to A km was well resolved. The detection range performance derived based on the GRD analysis was experimentally well demonstrated.

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Kwang-Woo Park, Jonghwa Choi, Jian Kang, Siyoun Choi, and Kyounghoon Baek "Detection range performance analysis and verification of the long-wavelength infrared optical system for drones", Proc. SPIE 12533, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIV, 1253313 (14 June 2023); https://doi.org/10.1117/12.2670189

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