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Publications

Found 154 results
Author Title [ Type(Asc)] Year
Filters: Author is A. Angal  [Clear All Filters]
Presentation
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, 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.
Xiong, X., X. Geng, A. Angal, J. Sun, and W. Barnes, "Using the Moon to track MODIS reflective solar bands calibration stability", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XV, vol. 8176, no. 817611, 2011.
Wu, A., A. Angal, and X. Xiong, "Using MODIS to calibrate NOAA series AVHRR reflective solar channels", Proceedings of SPIE – Earth Observing Systems XVI, vol. 8153, no. 815317, 2011.
Wu, A., A. Angal, X. Xiong, and C. Cao, "Using CEOS reference standard test sites to track the calibration stability of NOAA-19 AVHRR reflective solar channels", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XIV, vol. 7826, no. 782621, 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.
Xiong, X., A. Angal, W. Barnes, H. Chen, V. Chiang, X. Geng, Y. Li, K. Twedt, Z. Wang, T. Wilson, et al., "Updates of MODIS on-orbit calibration uncertainty assessments", Proc. SPIE - Earth Observing Systems XXII, vol. 10402, no. 104020M, 2017.
Wu, A., A. Angal, and X. Xiong, "Tracking on-orbit changes in response versus scan angle for MODIS reflective solar bands using Dome C", Proc. SPIE - Earth Observing Systems XXVI, pp. 1182910, 2021.
Sun, J., X. Xiong, H. Chen, A. Angal, A. Wu, and X. Geng, "Time-dependent response versus scan angle for MODIS reflective solar bands, Earth Observing Systems XIV", Proc. SPIE, vol. 7452, no. 745219, 2009.
Sun, J., X. Xiong, H. Chen, A. Angal, X. Geng, and A. Wu, "Time-dependent response versus scan angle and its uncertainty for MODIS reflective solar bands", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XIV, vol. 7826, no. 782620, 2010.
Sun, J., X. Xiong, N. Che, and A. Angal, "Terra MODIS band 2 electronic crosstalk: cause, impact, and mitigation", Proceedings of SPIE – Sensors, Systems, and Next-Generation Satellites XIV, vol. 7826, no. 78261Y, 2010.
Xiong, X., E. Aldoretta, A. Angal, T. Chang, X. Geng, D. Link, V. Salomonson, K. Twedt, and A. Wu, "Terra MODIS: 20 years of on-orbit calibration and performance", Proc. SPIE 11127, Earth Observing Systems XXIV, vol. 11127, pp. 1112714, 2019.
Xiong, X., B. Wenny, A. Angal, J. Sun, A. Wu, and W. Barnes, "Terra and Aqua MODIS Instrument Status", AGU, 12/2010.
Xiong, X., A. Angal, A. Wu, W. Barnes, and V. Salomonson, " Terra and Aqua MODIS instrument performance", IEEE Transactions on Geoscience and Remote Sensing, pp. 7388 - 7391, 2016.
Xiong, X., B. Wenny, A. Angal, W. Barnes, and V. Salomonson, "Summary of Terra and Aqua MODIS long term performance", IEEE, pp. 4006-4009, 10/2011.
Geng, X., A. Angal, J. Sun, H. Chen, A. Wu, Y. Li, D. Link, and X. Xiong, "Status of time-dependent response versus scan-angle (RVS) for Terra and Aqua MODIS reflective solar bands", Proc. SPIE 9218, Earth Observing Systems XIX, 92181P, 2014.
Xiong, X., B. N. Wenny, A. Wu, A. Angal, X. Geng, H. Chen, J. Dodd, D. Link, S. Madhavan, N. Chen, et al., "Status of Terra MODIS operation, calibration, and performance ", Proc. SPIE 9218, Earth Observing Systems XIX, 92180O, 2014.
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.
Angal, A., X. Geng, T. Wilson, A. Wu, and X. Xiong, "Status of MODIS Instruments and Calibration Improvements", Proceedings of the AGU, 2016.
Xiong, X., B. Wenny, J. Sun, A. Angal, A. Wu, H. Chen, S. Madhavan, X. Geng, J. Choi, V. Salomonson, et al., "Status of MODIS Instrument Operation and Changes in L1B Collection 6", Proceedings of AGU, 2012.
Xiong, X., B. N. Wenny, A. Angal, J. Sun, V. Salomonson, and W. Barnes, "Status of MODIS Instrument and Radiometric Calibration", IEEE Transactions on Geoscience and Remote Sensing, pp. 4419-4422, 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.
Xiong, X., A. Angal, A. Wu, D. Link, X. Geng, W. Barnes, and V. Salomonson, "Sixteen years of Terra MODIS on-orbit operation, calibration, and performance ", Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 100000V , 2016.
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.
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.
Bhatt, R., A. Angal, D. R. Doelling, X. Xiong, A. Wu, C. O. Haney, B. Scarino, and A. Gopalan, "Response versus scan-angle corrections for MODIS reflective solar bands using deep convective clouds", Proc. of SPIE Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV, vol. 9881, 2016.
Xiong, X., A. Wu, A. Angal, D. R. Doelling, and C. Cao, " Reflective solar calibration reference transfer from Aqua MODIS to S-NPP VIIRS ", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, (presentation only), 2014.
Xiong, X., A. Wu, A. Angal, and B. Wenny, "Recent progress on cross-comparison of terra and aqua MODIS calibration using dome C, Sensors, Systems, and Next-Generation Satellites XIII", Proc. SPIE, vol. 7474, no. 747411, 2009.
Chen, H., Z. Wang, J. Sun, A. Angal, and X. Xiong, "Recent progress of MODIS solar diffuser on-orbit degradation characterization", Proceedings of SPIE- Earth Observing Systems XVII, vol. 8510, issue 85100I, 2012.
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.
Chen, H., X. Xiong, A. Angal, X. Geng, and A. Wu, "Progress on Alternative Method of the on-orbit RVS Characterization for MODIS Reflective Solar Bands", Proc. SPIE 9218, Earth Observing Systems XIX, 92181K, 2014.
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.
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.
Angal, A., A. Wu, X. Xiong, X. Geng, D. Link, and H. Chen, "On-orbit performance of the MODIS SWIR bands", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, 92641Q, 2014.
Sun, J., X. Xiong, A. Angal, H. Chen, X. Geng, and A. Wu, "On-orbit performance of the MODIS reflective solar bands time-dependent response versus scan angle algorithm", Proceedings of SPIE- Earth Observing Systems XVII, vol. 8510, issue 85100J, 2012.
Xiong, X., X. Xie, and A. Angal, "On-orbit Performance of Terra MODIS Solar Diffuser", Proceedings of CALCON, 2006.