Publication Abstracts

Thompson et al. 2024

Thompson, D.R., R.O. Green, C. Bradley, P.G. Brodrick, N. Mahowald, E.B. Dor, M. Bennett, M. Bernas, N. Carmon, K.D. Chadwick, R.N. Clark, R.W. Coleman, E. Cox, E. Diaz, M.L. Eastwood, R. Eckert, B.L. Ehlmann, P. Ginoux, M.G. Ageitos, K. Grant, L. Guanter, D.H. Pearlshtien, M. Helmlinger, H. Herzog, T. Hoefen, Y. Huang, A. Keebler, O. Kalashnikova, D. Keymeulen, R. Kokaly, M. Klose, L. Li, S.R. Lundeen, J. Meyer, E. Middleton, R.L. Miller, P. Mouroulis, B. Oaida, V. Obiso, F. Ochoa, W. Olson-Duvall, G.S. Okin, T.H. Painter, C. Pérez García-Pando, R. Pollock, V. Realmuto, L. Shaw, P. Sullivan, G. Swayze, E. Thingvold, A.K. Thorpe, S. Vannan, C. Villarreal, C. Ung, D.W. Wilson, and S. Zandbergen, 2024: On-orbit calibration and performance of the EMIT imaging spectrometer. Remote Sens. Environ., 303, 113986, doi:10.1016/j.rse.2023.113986.

The Earth surface Mineral dust source InvesTigation (EMIT) is a remote visible to shortwave infrared (VSWIR) imaging spectrometer that has been operating onboard the International Space Station since July 2022. This article describes EMIT's on-orbit spectroradiometric calibration and validation. Accurate spectroscopy is vital to achieve consistent mapping results with orbital imaging spectrometers. EMIT takes a unique approach to this challenge, with just six optical elements, no shutter, and no onboard calibration systems. Its simple design focuses on uniformity and stability to enable vicarious spectroradiometric calibration. Our experiments demonstrate that this approach is successful, approaching the fidelity of manual field spectroscopy in some cases, and enabling new and more accurate products across diverse Earth science disciplines. EMIT achieves several notable firsts for an instrument of its class. It demonstrates successful on-orbit adjustments of Focal Plane Array (FPA) alignment with sub-micron precision. It offers spectral uniformity better than 98%. Optical artifacts in the measurement channels are at least three orders of magnitude below the primary solar-reflected surface signals. Its noise performance enables percent-level discrimination in the depths of mineral absorption features. In these aspects, EMIT satisfies the stringent performance needs for the next generation of VSWIR imaging spectrometers to observe the Earth's ecosystems, geology, and water resources.

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BibTeX Citation

@article{th09200d,
  author={Thompson, D. R. and Green, R. O. and Bradley, C. and Brodrick, P. G. and Mahowald, N. and Dor, E. B. and Bennett, M. and Bernas, M. and Carmon, N. and Chadwick, K. D. and Clark, R. N. and Coleman, R. W. and Cox, E. and Diaz, E. and Eastwood, M. L. and Eckert, R. and Ehlmann, B. L. and Ginoux, P. and Ageitos, M. G. and Grant, K. and Guanter, L. and Pearlshtien, D. H. and Helmlinger, M. and Herzog, H. and Hoefen, T. and Huang, Y. and Keebler, A. and Kalashnikova, O. and Keymeulen, D. and Kokaly, R. and Klose, M. and Li, L. and Lundeen, S. R. and Meyer, J. and Middleton, E. and Miller, R. L. and Mouroulis, P. and Oaida, B. and Obiso, V. and Ochoa, F. and Olson-Duvall, W. and Okin, G. S. and Painter, T. H. and Pérez García-Pando, C. and Pollock, R. and Realmuto, V. and Shaw, L. and Sullivan, P. and Swayze, G. and Thingvold, E. and Thorpe, A. K. and Vannan, S. and Villarreal, C. and Ung, C. and Wilson, D. W. and Zandbergen, S.},
  title={On-orbit calibration and performance of the EMIT imaging spectrometer},
  year={2024},
  journal={Remote Sens. Environ.},
  volume={303},
  pages={113986},
  doi={10.1016/j.rse.2023.113986},
}

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RIS Citation

TY  - JOUR
ID  - th09200d
AU  - Thompson, D. R.
AU  - Green, R. O.
AU  - Bradley, C.
AU  - Brodrick, P. G.
AU  - Mahowald, N.
AU  - Dor, E. B.
AU  - Bennett, M.
AU  - Bernas, M.
AU  - Carmon, N.
AU  - Chadwick, K. D.
AU  - Clark, R. N.
AU  - Coleman, R. W.
AU  - Cox, E.
AU  - Diaz, E.
AU  - Eastwood, M. L.
AU  - Eckert, R.
AU  - Ehlmann, B. L.
AU  - Ginoux, P.
AU  - Ageitos, M. G.
AU  - Grant, K.
AU  - Guanter, L.
AU  - Pearlshtien, D. H.
AU  - Helmlinger, M.
AU  - Herzog, H.
AU  - Hoefen, T.
AU  - Huang, Y.
AU  - Keebler, A.
AU  - Kalashnikova, O.
AU  - Keymeulen, D.
AU  - Kokaly, R.
AU  - Klose, M.
AU  - Li, L.
AU  - Lundeen, S. R.
AU  - Meyer, J.
AU  - Middleton, E.
AU  - Miller, R. L.
AU  - Mouroulis, P.
AU  - Oaida, B.
AU  - Obiso, V.
AU  - Ochoa, F.
AU  - Olson-Duvall, W.
AU  - Okin, G. S.
AU  - Painter, T. H.
AU  - Pérez García-Pando, C.
AU  - Pollock, R.
AU  - Realmuto, V.
AU  - Shaw, L.
AU  - Sullivan, P.
AU  - Swayze, G.
AU  - Thingvold, E.
AU  - Thorpe, A. K.
AU  - Vannan, S.
AU  - Villarreal, C.
AU  - Ung, C.
AU  - Wilson, D. W.
AU  - Zandbergen, S.
PY  - 2024
TI  - On-orbit calibration and performance of the EMIT imaging spectrometer
JA  - Remote Sens. Environ.
VL  - 303
SP  - 113986
DO  - 10.1016/j.rse.2023.113986
ER  -

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