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A Dual-Band Radiometric Framework for Passive Infrared Ranging

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2025, 30(7), pp.65~77
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : June 13, 2025
  • Accepted : July 3, 2025
  • Published : July 31, 2025

Jeong-Hyeon Moon 1 Seungha Kim 1 BongJun Choi 1 Heeduk Park 1

1한화시스템

Accredited

ABSTRACT

In this paper, we propose a passive infrared ranging algorithm using dual-band radiometric sensing, which estimates the distance to flame sources by analyzing band-ratio variations caused by differential atmospheric transmittance. A time-differential approach is first applied to extract flame-only radiance, effectively removing background and path radiance components. The resulting spectral radiance from each band is then used to construct a regression feature based on their logarithmic ratio. Theoretical modeling is grounded in Planck’s law and MODTRAN-based transmittance simulation, establishing a physical relationship between distance and observed radiance. Experimental results under real-world conditions demonstrate that the proposed method achieves superior ranging accuracy compared to existing techniques across various flame and environmental conditions. This research provides a physics-informed framework for infrared-based passive ranging and contributes to the advancement of long-range flame detection and tracking systems.

Citation status

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