Real time monitoring of vapor fluctuations through snapshot imaging by short wave IR TuLIPSS

Desheng Zheng; Christopher Flynn; Razvan I. Stoian; Jiawei Lu; Bruce C. Kindel; Ethan Gutmann; David Alexander; Tomasz S. Tkaczyk

doi:10.1117/12.2633583

30 September 2022 Real time monitoring of vapor fluctuations through snapshot imaging by short wave IR TuLIPSS

Desheng Zheng, Christopher Flynn, Razvan I. Stoian, Jiawei Lu, Bruce C. Kindel, Ethan Gutmann, David Alexander, Tomasz S. Tkaczyk

Author Affiliations +

Proceedings Volume 12233, Infrared Remote Sensing and Instrumentation XXX; 122330A (2022) https://doi.org/10.1117/12.2633583
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

A novel snapshot imaging spectrometer has been developed for short wave infrared monitoring. A custom designed fiber bundle remaps an incoming image to create void spaces on the sensor for a prism to disperse each individual fiber cores. This results in 35,000 spatial samples and each spatial sample providing spectral sampling for over 20 channels in the wavelength range of 1100nm to 1300nm. This spectral region spans the vapor sensitive dip of 1130nm and the vapor insensitive peak of 1260nm in the reflect spectrum of land covers, allowing calculation of a vapor index and the potential for monitoring vapor fluctuations in the atmosphere. Laboratory testing confirms the sensitivity can reach about 42 micrometers of precipitable water, due to the absorption coefficient at 1130 nm. Field testing demonstrates the ability to monitor the temporal and spatial fluctuations of vapor from different land covers such as lawn, concrete surfaces. Real time mapping of the vapor variation - index may provide useful information for atmospheric, environmental, agriculture and solar energy research.

Conference Presentation

Citation Download Citation

Desheng Zheng, Christopher Flynn, Razvan I. Stoian, Jiawei Lu, Bruce C. Kindel, Ethan Gutmann, David Alexander, and Tomasz S. Tkaczyk "Real time monitoring of vapor fluctuations through snapshot imaging by short wave IR TuLIPSS", Proc. SPIE 12233, Infrared Remote Sensing and Instrumentation XXX, 122330A (30 September 2022); https://doi.org/10.1117/12.2633583

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