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Absorption-Based Ranging from Ambient Thermal Radiation without Known Emissivities



Unay Dorken Gallastegi, Hoover Rueda-Chacon, Marty Stevens, Vivek Goyal


We present passive absorption-based ranging using long-wave infrared hyperspectral measurements of an outdoor scene. Regularization and parametric modeling of transmittance enable good accuracy without knowing temperatures or emissivities of scene objects, as validated with lidar.
Proceedings Title
OSA Technical Digest
Conference Dates
May 15-20, 2022
Conference Location
San Jose, CA, US
Conference Title


Hyperspectral imaging, Remote Sensing


Dorken Gallastegi, U. , Rueda-Chacon, H. , Stevens, M. and Goyal, V. (2022), Absorption-Based Ranging from Ambient Thermal Radiation without Known Emissivities, OSA Technical Digest, San Jose, CA, US, [online],, (Accessed June 24, 2024)


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Created May 15, 2022, Updated May 5, 2023