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Publications

Found 49 results
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Angal, A., T. Choi, G. Chander, A. Wu, and X. Xiong, "Using the Sonoran Desert test site to track the long-term radiometric stability of the Landsat TM/ETM+ and MODIS sensors, Atmospheric and Environmental Remote Sensing Data Processing and Utilization V: Readiness for GEOSS III", Proc. SPIE, vol. 7456, no. 745606, 2009.
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.
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., 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.
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.
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.
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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.
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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.
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., 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.
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.
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.
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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., 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., A. Angal, G. Chander, and X. Xiong, "Radiometric Cross-calibration of the Terra MODIS and Landsat 7 ETM+ Using an Invariant Desert Site, Earth Observing Systems XIII", Proc. SPIE, vol. 7081, no. 708110, 2008.
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.
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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.
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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.
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.
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.
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.
Choi, T., N. Che, and X. Xiong, On-orbit MODIS Modulation Transfer Function Trending Along-Scan from the Spectro-Radiometric Calibration Assembly, 2007.
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.
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.
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., N. Che, and X. Xiong, "On-orbit Aqua MODIS Modulation Transfer Function Trending in Along-Scan from the Spectro-Radiometric Calibration Assembly, Earth Observing Systems XIII", Proc. SPIE, vol. 7081, no. 70810A, 2008.
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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.
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.
Angal, A., T. Choi, G. Chander, and X. Xiong, "Monitoring On-orbit Stability of the Terra MODIS and Landsat 7 ETM+ Reflective Solar Bands Using the Railroad Valley Playa, Nevada (RVPN) Test Site", Proc. IEEE International Geoscience and Remote Sensing Symposium, vol. 4, pp. IV-1364-1367, 2008.
Chander, G., T. Choi, A. Angal, and X. Xiong, Monitoring On-orbit Radiometric Stability of the Terra MODIS and Landsat 7 ETM+ Sensors Using Pseudo-invariant test Sites, 2008.
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.
Xiong, X., A. Angal, H. Chen, T. Choi, and J. Sun, MODIS Solar Diffuser On-orbit Performance, 2008.
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.
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.
Che, N., T. Choi, and X. Xiong, "MODIS Along-scan Direction Line Spread Function (LSF) Modeling and Verification Using the Integration and Alignment Collimator (IAC), Earth Observing Systems XIII", Proc. SPIE, vol. 7081, no. 708109, 2008.