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Publications

Found 111 results
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Filters: Type is Presentation and Author is A. Angal  [Clear All Filters]
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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.
Angal, A., X. Xiong, A. Wu, H. Chen, X. Geng, D. Link, Y. Li, A. Wald, and J. Brinkmann, "On-orbit Performance and Calibration Improvements for the Reflective Solar Bands of Terra and Aqua MODIS", Proc. of SPIE Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV, vol. 9881, 2016.
Xiong, X., X. Xie, and A. Angal, "On-orbit Noise Characterization for MODIS Reflective Solar Bands", Proc. IEEE International Geoscience and Remote Sensing Symposium, vol. 4, pp. IV-1336-1339, 2008.
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.
Xiong, X., A. Angal, H. Chen, X. Geng, D. Link, A. Wu, and V. Salomonson, "On-orbit Calibration Methodologies for MODIS Reflective Solar Bands", IGARSS 2015 (Presentation only), 2015.
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Angal, A., A. Wu, N. Che, and X. Xiong, Monitoring the Terra MODIS Reflective Solar Bands On-orbit Short-Term Stability, 2007.
Angal, A., X. Xiong, X. Geng, and J. Sun, "Monitoring the Terra and Aqua MODIS RSB calibration using scattered light from the Nadir-port ", Proc. SPIE 9218, Earth Observing Systems XIX, 92181J, 2014.
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.
Wu, A., X. Xiong, C. Cao, and A. Angal, "Monitoring MODIS Calibration Stability of Visible and Near-IR bands From Observed Top-of-Atmosphere BRDF-normalized Reflectances Over Libyan Desert and Antarctic Surfaces, Earth Observing Systems XIII", Proc. SPIE, vol. 7081, no. 708113, 2008.
Xiong, X., A. Angal, H. Chen, T. Choi, and J. Sun, MODIS Solar Diffuser On-orbit Performance, 2008.
Chen, H., X. Xiong, A. Angal, Z. Wang, and A. Wu, "MODIS solar diffuser on-orbit degradation characterization using improved SDSM screen modeling ", Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 100000X, 2016.
Twedt, K. A., A. Angal, X. Xiong, X. Geng, and H. Chen, "MODIS solar diffuser degradation at short-wave infrared band wavelengths", Proc. SPIE Earth Observing Systems XXII, vol. 10402, no. 104022K, 2017.
Xiong, X., J. Sun, H. Chen, Z. Wang, and A. Angal, "MODIS SDSM Sun View Response Simulation and Characterization", SPIE 2013 (Presentation only), 2013.
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.
Aldoretta, E., A. Angal, K. Twedt, H. Chen, Y. Li, D. Link, Q. Mu, K. Vermeesch, and X. Xiong, " The MODIS RSB calibration and look-up table delivery process for collection 6 and 6.1", Proc. SPIE - Earth Observing Systems XXV, vol. 11501, pp. 115011Q, 2020.
Sun, J., X. Xiong, A. Angal, and T. Wilson, "MODIS reflective solar bands lunar calibration update and improvements", Proc. of SPIE - Sensors, Systems, and Next-Generation Satellites XXIV, vol. 11530, pp. 115301C, 2020.
Twedt, K., E. Aldoretta, A. Angal, H. Chen, X. Geng, Y. Li, Q. Mu, K. Vermeesch, and X. Xiong, "MODIS reflective solar bands calibration improvements for Collection 7", Proc. SPIE 11858, Sensors, Systems, and Next-Generation Satellites XXV, pp. 118580S, 2021.
Chen, H., K. Twedt, K. Vermeesch, E. Aldoretta, A. Angal, and X. Xiong, "MODIS reflective solar band calibration improvements using pseudo-invariant desert targets", Proc. SPIE - Earth Observing Systems XXVI, vol. 11829, pp. 118290Z, 2021.
Xiong, X., B. Guenther, A. Angal, W. Barnes, V. Salomonson, J. Sun, and B. Wenny, "MODIS radiometric calibration program, methods and results", Proceedings of IGARSS, pp. 6924-6927, 2012.
Xiong, X., A. Angal, S. Madhavan, D. Link, X..Geng, B. N. Wenny, A. Wu, H. Chen, and V. Salomonson, "MODIS instrument operation and calibration improvements ", IEEE Transactions on Geoscience and Remote Sensing, pp. 1385 - 1388, 2014.
Mu, Q., A. Angal, K. Twedt, A. Wu, and X. Xiong, "MODIS detector differences using deep convective clouds and desert targets", Proc. of SPIE - Sensors, Systems, and Next-Generation Satellites XXIV, vol. 11530, pp. 115301A, 2020.
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.
Xiong, X., Z. Wang, J. Sun, A. Angal, J. Fulbright, and J. Butler, "MODIS and VIIRS lunar observations and applications ", Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88890V , 2013.
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Wilson, T., A. Angal, A. Shrestha, and X. Xiong, "Lunar calibration improvements for the short-wave infrared bands in Aqua and Terra MODIS", Proceedings Volume 10423, Sensors, Systems, and Next-Generation Satellites XXI; 1042313, 2017.
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.
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Angal, A., C. Bruegge, X. Xiong, and A. Wu, "Intercalibration of the reflective solar bands of MODIS and MISR instruments on the Terra platform", Proc. SPIE - Earth Observing Systems XXVI, vol. 11829, pp. 118291B, 2021.
Xiong, X., J. Butler, N. Lei, J. Sun, J. Fulbright, Z. Wang, J. Mcintire, and A. Angal, "Improvements of VIIRS and MODIS solar diffuser and lunar calibration", Proc. SPIE 8866, Earth Observing Systems XVIII, 88661M, 2013.
Geng, X., A. Angal, Y. Li, K. Twedt, and X. Xiong, "Improvements in the on-orbit response versus scan-angle characterization for the MODIS ocean color bands", Proc. SPIE 11151, Sensors, Systems, andNext-Generation Satellites XXIII, no. 115124, 2019.
Li, Y., A. Angal, N. Chen, X. Geng, D. Link, Z. Wang, A. Wu, and X. Xiong, "Improvement in the characterization of MODIS subframe difference", Proc. SPIE 9972, Earth Observing Systems XXI, 99720W, 2016.
Wald, A., R. Levy, A. Angal, X. Geng, X. Xiong, and K. Hoffman, "Impact of MODIS SWIR band calibration improvements on Level-3 atmospheric products", Proc. SPIE 9827, Ocean Sensing and Monitoring VIII, 2016.
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Xiong, X., A. Angal, J. Butler, C. Cao, D. R. Doelling, A. Wu, and X. Wu, "Global Space-based Inter-Calibration System Reflective Solar Calibration Reference: From Aqua MODIS to S-NPP VIIRS", Proc. of SPIE Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV, vol. 9881, 2016.
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Mu, Q., A. Angal, X. Geng, A. Wu, and X. Xiong, "Evaluation of the on-orbit response versus scan-angle (RVS) performance for the MODIS reflective solar bands using multiple ground targets", Proc. SPIE - Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV, vol. 10644, pp. 106441X, 2018.
Shrestha, A., A. Angal, and X..Xiong, "Evaluation of MODIS and Sentinel-3 SLSTR thermal emissive bands calibration consistency using Dome C", Proc. SPIE - Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV, vol. 10644, pp. 106441U, 2018.