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Publications

Found 38 results
Author Title Type [ Year(Asc)]
Filters: Type is Presentation and Author is T. Choi  [Clear All Filters]
2013
Chu, M., J. Sun, A. Angal, H. Chen, X. Geng, T. Choi, and X. Xiong, "On-orbit calibration performance of MODIS TDI bands ", Proc. SPIE 8866, Earth Observing Systems XVIII, 886605, 2013.
Choi, T., X. Xiong, A. Angal, and G. Chander, "Spectral stability of the Libya 4 site using EO-1 Hyperion", Proc. SPIE 8724: Ocean Sensing and Monitoring V 872410, 2013.
Xiong, X., B. Wenny, J. Sun, A. Angal, A. Wu, H. Chen, X. Geng, T. Choi, S. Madhavan, D. Link, et al., "Status of MODIS on-orbit calibration and characterization", Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88890U , 2013.
Xiong, X., B. Wenny, J. Sun, A. Wu, H. Chen, X. Geng, T. Choi, S. Madhavan, and V. Salomonson, "Status of Terra and Aqua MODIS Instrument Operation and Calibration", Proceedings of the AGU, 2013.
Choi, T., X. Xiong, Z. Wang, and D. Link, "Terra and Aqua MODIS on-orbit spectral characterization for reflective solar bands ", Proc. SPIE 8724: Ocean Sensing and Monitoring V 87240Y, 2013.
2012
Sun, J., A. Angal, H. Chen, X. Geng, T. Choi, M. Chu, and X. Xiong, "Long-term Calibration Performance of MODIS Reflective Solar Bands", Proceedings of CALCON, 2012.
Sun, J., A. Angal, X. Xiong, H. Chen, X. Geng, A. Wu, T. Choi, and M. Chu, "MODIS RSB calibration improvements in Collection 6", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation and Characterization II, 85280N, 2012.
Xiong, X., A. Angal, T. Choi, J. Sun, and E. Johnson, "On-orbit performance of MODIS solar diffuser stability monitor", Proceedings of SPIE- Earth Observing Systems XVII, vol. 8510, issue 85100H, 2012.
Xiong, X., B. N. Wenny, J. Sun, A. Angal, A. Wu, H. Chen, T. Choi, S. Madhavan, X. Geng, D. Link, et al., "Overview of Aqua MODIS 10-year on-orbit calibration and performance", Proc. SPIE 8533, Sensors, Systems, and Next-Generation Satellites XVI, 853316, 2012.
Angal, A., H. Chen, T. Choi, X. Geng, J. Sun, B. N. Wenny, and X. Xiong, "An overview of MODIS RSB Calibration and the Look-up-table delivery process", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation and Characterization II, 85280L, 2012.
Angal, A., S. A. Kumar, X. Xiong, K. A. S. Kumar, V. K. Dadhwal, and T. Choi, "Using CEOS reference standard targets to assess the on-orbit performance of Resourcesat-2 AWiFS in comparison with Terra MODIS", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation and Characterization II, 85280K, 2012.
2011
Geng, X., A. Angal, J. Sun, A. Wu, T. Choi, and X. Xiong, "Characterization of MODIS mirror side difference in the reflective solar spectral region", Proceedings of SPIE – Earth Observing Systems XVI, vol. 8153, no. 81531O, 2011.
Wang, Z., T. Choi, and X. Xiong, "On-orbit modulation transfer function characterization of terra MODIS using the moon", Proceedings of SPIE – Earth Observing Systems XVI, vol. 8153, no. 81531N, 2011.
Xiong, X., J. Sun, A. Angal, Y. Xie, T. Choi, and Z. Wang, "Results of MODIS band-to-band registration characterization using on-orbit lunar observation", Proceedings of SPIE – Earth Observing Systems XVI, vol. 8153, no. 81531R, 2011.
Xiong, X., A. Angal, S. Madhavan, T. Choi, B. Wenny, J. Sun, A. Wu, H. Chen, and V. Salomonson, "Status of Aqua MODIS Instrument On-orbit Operation and Calibration", AGU 2011, San Francisco, CA Dec 5-9, 2011.
2010
Xiong, X., A. Angal, S. Madhavan, T. Choi, J. Dodd, X. Geng, Z. Wang, G. Toller, and W. Barnes, "Aqua MODIS 8-year on-orbit operation and calibration", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XIV, vol. 7826, no. 78261X, 2010.
Wenny, B., J. Sun, X. Xiong, A. Wu, H. Chen, A. Angal, T. Choi, N. Che, S. Madhavan, X. Geng, et al., "MODIS Calibration Algorithm Improvements Developed for Collection 6 Level-1B", Proceedings of SPIE – Poster Session, vol. 7807, no. 78071F, 2010.
Chander, G., A. Sampath, A. Angal, T. Choi, and X. Xiong, "Monitoring the long term stability of the IRS-P6 AWiFS sensor using the Sonoran and RVPN sites", Proceedings of SPIE – Earth Observing Missions and Sensors: Development, Implementation, and Characterization, vol. 7862, no. 78620K, 2010.
Chander, G., A. Angal, X. Xiong, D. L. Helder, N. Mishra, T. Choi, and A. Wu, "Preliminary assessment of several parameters to measure and compare usefulness of the CEOS reference pseudo-invariant calibration sites", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XIV, vol. 7826, no. 78262L, 2010.
Xiong, X., T. Choi, N. Che, Z. Wang, J. Dodd, and Y. Xie, "Results and lessons from a decade of Terra MODIS on-orbit spectral characterization", Proceedings of SPIE – Earth Observing Missions and Sensors: Development, Implementation, and Characterization, vol. 7862, no. 78620M, 2010.
Choi, T., X. Xiong, A. Angal, and G. Chander, "Simulation of the long term radiometric responses of the Terra MODIS and EO-1 ALI using Hyperion spectral responses over Railroad Valley Playa in Nevada (RVPN)", Proceedings of SPIE – Earth Observing Missions and Sensors: Development, Implementation, and Characterization, vol. 7862, no. 78620H, 2010.
Chander, G., N. Mishra, D. L. Helder, D. Aaron, T. Choi, A. Angal, and X. Xiong, "Use of EO-1 Hyperion Data to Calculate Spectral Band Adjustment Factors (SBAF) between the L7 ETM+ and Terra MODIS Sensors", IEEE, pp. 1667-1670, 2010.
Angal, A., G. Chander, T. Choi, A. Wu, and X. Xiong, "The use of the Sonoran Desert as a Pseudo-invariant Site for Optical Sensor Cross-Calibration and Long-Term Stability Monitoring", IEEE, pp. 1656-1659, 2010.
Angal, A., X. Xiong, G. Chander, T. Choi, and A. Wu, "Using the Pseudo-Invariant CEOS Reference Standard Test Sites for Calibration Stability Monitoring", Proceedings of CALCON 2010, 2010.