Browsing by Author "Weers, Brock D."
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Item Ruggedized, field-ready snapshot light-guide-based imaging spectrometer for environmental and remote sensing applications(Optica Publishing Group, 2022) Flynn, Christopher; Stoian, Razvan I.; Weers, Brock D.; Mullet, John E.; Thomasson, J. Alex; Thomasson, J. Alex; Alexander, David; Tkaczyk, Tomasz S.; Tkaczyk, Tomasz S.A field-ready, fiber-based high spatial sampling snapshot imaging spectrometer was developed for applications such as environmental monitoring and smart farming. The system achieves video rate frame transfer and exposure times down to a few hundred microseconds in typical daylight conditions with ∼63,000 spatial points and 32 spectral channels across the 470nm to 700nm wavelength range. We designed portable, ruggedized opto-mechanics to allow for imaging from an airborne platform. To ensure successful data collection prior to flight, imaging speed and signal-to-noise ratio was characterized for imaging a variety of land covers from the air. The system was validated by performing a series of observations including: Liriope Muscari plants under a range of water-stress conditions in a controlled laboratory experiment and field observations of sorghum plants in a variety of soil conditions. Finally, we collected data from a series of engineering flights and present reassembled images and spectral sampling of rural and urban landscapes