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Publications

Found 49 results
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2014
Choi, T., X. Xiong, A. Angal, G. Chander, and J. Qu, "Assessment of the spectral stability of Libya 4, Libya 1, and Mauritania 2 sites using Earth Observing One Hyperion", Journal of Applied Remote Sensing, vol. 8, issue 1, 2014.
Wang, Z., X. Xiong, T. Choi, and D. Link, "On-Orbit Characterization of MODIS Modulation Transfer Function Using the Moon", IEEE Transactions on Geoscience and Remote Sensing, vol. 52, issue 7, pp. 4112-4121, 2014.
Choi, T., X. Xiong, and Z. Wang, "On-Orbit Lunar Modulation Transfer Function Measurements for the Moderate Resolution Imaging Spectroradiometer ", IEEE Transactions on Geoscience and Remote Sensing, vol. 52, issue 1, pp. 270-277, 2014.
2013
Helder, D. L., K. Thome, N. Mishra, G. Chander, X. Xiong, A. Angal, and T. Choi, "Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site", IEEE Transactions on Geoscience and Remote Sensing, vol. 51, issue 3, pp. 1360-1369, 2013.
Chander, G., N. Mishra, D. L. Helder, D. B. Aaron, A. Angal, T. Choi, X. Xiong, and D. R. Doelling, "Applications of Spectral Band Adjustment Factors (SBAF) for Cross-Calibration", IEEE Transactions on Geoscience and Remote Sensing, vol. 51, issue 3, pp. 1267-1281, 2013.
Angal, A., X. Xiong, T. Choi, G. Chander, N. Mishra, and D. L. Helder, "Impact of Terra MODIS Collection 6 on long-term trending comparisons with Landsat 7 ETM+ reflective solar bands", Remote Sensing Letters, vol. 4, issue 9, pp. 873-881, 2013.
Angal, A., X. Xiong, A. Wu, G. Chander, and T. Choi, "Multitemporal Cross-Calibration of the Terra MODIS and Landsat 7 ETM+ Reflective Solar Bands", IEEE Transactions on Geoscience and Remote Sensing, vol. 51, issue 4, pp. 1870-1882, 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.
Chander, G., A. Angal, T. Choi, and X. Xiong, "Radiometric Cross-Calibration of EO-1 ALI With L7 ETM+ and Terra MODIS Sensors Using Near-Simultaneous Desert Observations", IEEE JSTARS, vol. 6, issue 2, pp. 386-399, 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.
Angal, A., G. Chander, X. Xiong, T. Choi, and A. Wu, "Characterization of the Sonoran desert as a radiometric calibration target for Earth observing sensors", J. Appl. Remote Sens, vol. 5, issue 1, pp. 059502-6, 07/2011.
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., X. Xiong, T. Choi, and A. Angal, "Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites", Remote Sens. Environ., pp. 114, 925-939, 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.
Angal, A., X. Xiong, T. Choi, G. Chander, and A. Wu, "Using the Sonoran and Libyan Desert Test Sites to monitor the temporal stability of reflective solar bands for Landsat 7 ETM+ and Terra MODIS Sensors", J. Appl. Remote Sens, vol. 4, no. 1, pp. 043525-12, 2010.