Date of Award:
8-2024
Document Type:
Dissertation
Degree Name:
Doctor of Philosophy (PhD)
Department:
Electrical and Computer Engineering
Committee Chair(s)
Charles Swenson
Committee
Charles Swenson
Committee
Jacob Gunther
Committee
Todd Moon
Committee
Bela Fejer
Committee
David Geller
Committee
Allan Marchant
Abstract
Monitoring methane emissions from space is essential for reducing global warming. This dissertation introduces the Filter Incidence Narrowband Infrared Spectrometer (FINIS), a compact, lightweight instrument designed for nanosatellites to accurately measure methane emissions. FINIS uses two innovative imaging spectrometers to capture the Earth's reflected light, focusing on the strongest methane absorption feature at 1666 nm. By using tiled interference filters, each imager collects detailed spectral data, allowing precise methane detection. FINIS has been significantly improved from its prototype to its space-ready version, set to launch on the ACMES CubeSat in late 2025. The new design includes a binocular optical system and an onboard calibration unit, enabling accurate measurements independent of surface reflectance. Radiometric analysis shows that FINIS can achieve a high signal-to-noise ratio under various lighting conditions, ensuring reliable methane measurements. Simulations confirmed FINIS's ability to detect methane plumes, demonstrating its data acquisition and processing methods. Preliminary tests and calibrations, including focus, stereo camera, and methane cell calibrations, verified the instrument's performance. Future work will focus on integrating FINIS into the ACMES bus and validating its performance post-launch. FINIS's successful deployment will enhance global methane monitoring efforts, contributing to the fight against climate change.
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Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Recommended Citation
Mattos, Bruno, "Filter Incidence Narrowband Infrared Spectrometer for Space-Based Methane Measurement and Plume Detection" (2024). All Graduate Theses and Dissertations, Fall 2023 to Present. 272.
https://digitalcommons.usu.edu/etd2023/272
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