MODIS Characterization Support Team
- On-orbit operation and characterization of the MODIS instruments onboard the Terra and Aqua satellites
VIIRS Characterization Support Team
- Support the pre-flight characterization of the JPSS-2, 3, and 4 VIIRS instruments
- On-orbit calibration of the Suomi NPP and NOAA-20 VIIRS instruments
SPIE,
2016
-
Present
Conference Program Committee – SPIE Optical Engineering + Applications (2020-2022)
2022 NASA Robert H. Goddard-Exceptional Achievement for Customer Service to JPSS-2 Instrument Development and Delivery Team
2019 Terra Missions' Pecora Team Award in recognition of significant contributions as a part of the MODIS Characterization Support Team
2018 NOAA & NASA Group Achievement Award to the JPSS-1 Project Team for outstanding contributions to the successful launch and activation of the JPSS-1 Satellite
2017 Hydrosphere, Biosphere and Geophysics HBG Annual Peer Award for Scientific/Technical Support
2016 NASA Group Achievement Award (MODIS Characterization Support Team)
2012 HOBI Group Achievement Award (MODIS Characterization Support Team and MODIS sensor Working Group)
2005 USGS EROS Group Achievement Award for the successful implementation of an image assessment system for EO-1 ALI
Refereed
Moyer, D., A. Angal, Q. Ji, J. McIntire, and X. Xiong. 2022. "JPSS-2 VIIRS Pre-Launch Reflective Solar Band Testing and Performance."
Remote Sensing,
14
(24):
6353
[10.3390/rs14246353]
Moyer, D., A. Angal, H. Oudrari, et al. 2022. "JPSS-1 VIIRS Prelaunch Reflective Solar Band Testing and Performance."
Remote Sensing,
14
(20):
5113
[10.3390/rs14205113]
Xiong, X., J. Sun, A. Angal, and T. Wilson. 2022. "Calibration Inter-Comparison of MODIS and VIIRS Reflective Solar Bands Using Lunar Observations."
Remote Sensing,
14
(19):
4754
[10.3390/rs14194754]
Wu, A., X. Xiong, R. Bhatt, et al. 2022. "An Assessment of SNPP and NOAA20 VIIRS RSB Calibration Performance in NASA SIPS Reprocessed Collection-2 L1B Data Products."
Remote Sensing,
14
(17):
4134
[10.3390/rs14174134]
Angal, A., X. Xiong, T. Chang, et al. 2022. "Terra and Aqua MODIS collection 7 level 1B algorithm."
Journal of Applied Remote Sensing,
16
(03):
[10.1117/1.jrs.16.037502]
Mu, Q., X. Xiong, K. Twedt, A. Angal, and X. Geng. 2022. "Characterization of the on-orbit response versus scan angle for Terra MODIS SWIR bands in Collection 7."
Journal of Applied Remote Sensing,
16
(02):
[10.1117/1.jrs.16.024520]
McIntire, J., X. Xiong, J. J. Butler, et al. 2022. "An Overall Assessment of JPSS-3 VIIRS Radiometric Performance Based on Pre-Launch Testing."
Remote Sensing,
14
(9):
1999
[10.3390/rs14091999]
Angal, A., C. Bruegge, X. Xiong, and A. Wu. 2022. "Intercalibration of the reflective solar bands of MODIS and MISR instruments on the Terra platform."
Journal of Applied Remote Sensing,
16
(02):
[10.1117/1.jrs.16.027501]
Twedt, K., N. Lei, X. Xiong, et al. 2022. "On-Orbit Calibration and Performance of NOAA-20 VIIRS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing,
60:
1-13
[10.1109/tgrs.2021.3108970]
Twedt, K. A., S. Henderson, X. Xiong, A. Angal, and X. Geng. 2022. "Nonlinear Detector Response of Aqua MODIS Land Imaging Bands."
IEEE Transactions on Geoscience and Remote Sensing,
60:
1-10
[10.1109/tgrs.2021.3075384]
Angal, A., X. Xiong, and T. Wilson. 2022. "Unscheduled Lunar Observations for Radiometric Characterization of VIIRS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing,
60:
1-8
[10.1109/tgrs.2021.3112820]
Sun, J., X. Xiong, N. Lei, et al. 2021. "Ten Years of SNPP VIIRS Reflective Solar Bands On-Orbit Calibration and Performance."
Remote Sensing,
13
(15):
2944
[10.3390/rs13152944]
Angal, A., X. Xiong, K. Thome, and B. N. Wenny. 2021. "Cross-Calibration of Terra and Aqua MODIS Using RadCalNet."
IEEE Geoscience and Remote Sensing Letters,
18
(2):
188-192
[10.1109/lgrs.2020.2973535]
Xiong, X., A. Angal, Y. Li, and K. Twedt. 2020. "Improvements of on-orbit characterization of Terra MODIS short-wave infrared spectral bands out-of-band responses."
Journal of Applied Remote Sensing,
14
(04):
[10.1117/1.jrs.14.047503]
Lei, N., K. A. Twedt, X. Xiong, and A. Angal. 2020. "Performance of NOAA-20 VIIRS Solar Diffuser and Solar Diffuser Stability Monitor."
IEEE Transactions on Geoscience and Remote Sensing,
59
(9):
7180-7188
[10.1109/tgrs.2020.3032068]
Xiong, X., A. Angal, T. Chang, et al. 2020. "MODIS and VIIRS Calibration and Characterization in Support of Producing Long-Term High-Quality Data Products."
Remote Sensing,
12
(19):
3167
[10.3390/rs12193167]
Xiong, X., E. Aldoretta, A. Angal, et al. 2020. "Terra MODIS: 20 years of on-orbit calibration and performance."
Journal of Applied Remote Sensing,
14
(03):
1
[10.1117/1.jrs.14.037501]
Angal, A., X. Geng, X. Xiong, et al. 2020. "On-Orbit Calibration of Terra MODIS VIS Bands Using Polarization-Corrected Desert Observations."
IEEE Transactions on Geoscience and Remote Sensing,
58
(8):
5428-5439
[10.1109/tgrs.2020.2966000]
Angal, A., X. Xiong, and A. Shrestha. 2020. "Cross-Calibration of MODIS Reflective Solar Bands With Sentinel 2A/2B MSI Instruments."
IEEE Transactions on Geoscience and Remote Sensing,
58
(7):
5000-5007
[10.1109/tgrs.2020.2971462]
Twedt, K. A., A. Angal, and X. Xiong. 2020. "Effects of out-of-band and time-varying relative spectral response on the calibration of MODIS reflective solar bands."
Journal of Applied Remote Sensing,
14
(02):
1
[10.1117/1.jrs.14.024523]
Yu, S., R. Rosenberg, C. Bruegge, et al. 2020. "Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference."
Remote Sensing,
12
(8):
1269
[10.3390/rs12081269]
Bhatt, R., D. R. Doelling, A. Angal, et al. 2020. "Response Versus Scan-Angle Assessment of MODIS Reflective Solar Bands in Collection 6.1 Calibration."
IEEE Transactions on Geoscience and Remote Sensing,
58
(4):
2276-2289
[10.1109/tgrs.2019.2946963]
Mu, Q., A. Wu, X. Xiong, and A. Angal. 2020. "Assessment of SNPP VIIRS RSB detector-to-detector differences using deep convective clouds and deserts."
Journal of Applied Remote Sensing,
14
(01):
1
[10.1117/1.jrs.14.018503]
Wilson, T., A. Angal, and X. Xiong. 2020. "Orbital Path and Spacecraft Attitude Correction for the MODIS Lunar Spatial Characterization."
IEEE Transactions on Geoscience and Remote Sensing,
58
(2):
1063-1073
[10.1109/tgrs.2019.2943254]
Shao, X., T.-C. Liu, X. Xiong, et al. 2019. "Surface Roughness-Induced Spectral Degradation of Multi-Spaceborne Solar Diffusers Due to Space Radiation Exposure."
IEEE Transactions on Geoscience and Remote Sensing,
57
(11):
8658-8671
[10.1109/tgrs.2019.2922070]
Li, Y., X. Xiong, J. W. Mcintire, et al. 2019. "Early Calibration and Performance Assessments of NOAA-20 VIIRS Thermal Emissive Bands."
IEEE Transactions on Geoscience and Remote Sensing,
57
(11):
9242-9251
[10.1109/tgrs.2019.2925782]
Xiong, X., A. Angal, K. A. Twedt, et al. 2019. "MODIS Reflective Solar Bands On-Orbit Calibration and Performance."
IEEE Transactions on Geoscience and Remote Sensing,
57
(9):
6355 - 6371
[10.1109/TGRS.2019.2905792]
Tuli, F. T., C. T. Pinto, A. Angal, X. Xiong, and D. Helder. 2019. "New Approach for Temporal Stability Evaluation of Pseudo-Invariant Calibration Sites (PICS)."
Remote Sensing,
11
(12):
1502
[10.3390/rs11121502]
Raut, B., M. Kaewmanee, A. Angal, X. Xiong, and D. Helder. 2019. "Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites."
Remote Sensing,
11
(9):
1105
[10.3390/rs11091105]
Chang, T., X. Xiong, and A. Angal. 2019. "Terra and Aqua MODIS TEB intercomparison using Himawari-8/AHI as reference."
Journal of Applied Remote Sensing,
13
(01):
1
[10.1117/1.jrs.13.017501]
Oudrari, H., J. McIntire, X. Xiong, et al. 2018. "An Overall Assessment of JPSS-2 VIIRS Radiometric Performance Based on Pre-Launch Testing."
Remote Sensing,
10
(12):
1921
[10.3390/rs10121921]
Angal, A., X. Xiong, D. Helder, M. Kaewmanee, and L. Leigh. 2018. "Assessing the calibration differences in the reflective solar bands of Terra MODIS and Landsat-7 enhanced thematic mapper plus."
Journal of Applied Remote Sensing,
12
(04):
1
[10.1117/1.jrs.12.044002]
Xiong, X., A. Angal, W. L. Barnes, et al. 2018. "Updates of Moderate Resolution Imaging Spectroradiometer on-orbit calibration uncertainty assessments."
Journal of Applied Remote Sensing,
12
(03):
1
[10.1117/1.jrs.12.034001]
Angal, A., X. Xiong, A. Wu, X. Geng, and H. Chen. 2018. "Improvements in the On-Orbit Response Versus Scan Angle Characterization of the Aqua MODIS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing,
56
(3):
1728-1738
[10.1109/tgrs.2017.2767206]
Angal, A., X. Xiong, Q. Mu, et al. 2018. "Results From the Deep Convective Clouds-Based Response Versus Scan-Angle Characterization for the MODIS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing,
56
(2):
1115-1128
[10.1109/tgrs.2017.2759660]
Chen, H., X. Xiong, A. Angal, and K. A. Twedt. 2017. "On-Orbit Characterization of the MODIS SDSM Screen for Solar Diffuser Degradation Estimation."
IEEE Transactions on Geoscience and Remote Sensing,
55
(11):
6456-6467
[10.1109/tgrs.2017.2728520]
Mu, Q., A. Wu, X. Xiong, et al. 2017. "Optimization of a Deep Convective Cloud Technique in Evaluating the Long-Term Radiometric Stability of MODIS Reflective Solar Bands."
Remote Sensing,
9
(6):
535
[10.3390/rs9060535]
Wu, A., X. Geng, A. Wald, A. Angal, and X. Xiong. 2017. "Assessment of Terra MODIS On-Orbit Polarization Sensitivity Using Pseudoinvariant Desert Sites."
IEEE Transactions on Geoscience and Remote Sensing,
55
(7):
4168-4176
[10.1109/tgrs.2017.2689719]
Chang, T., X. Xiong, A. Angal, A. Wu, and X. Geng. 2017. "Aqua and Terra MODIS RSB Calibration Comparison Using BRDF Modeled Reflectance."
IEEE Transactions on Geoscience and Remote Sensing,
55
(4):
2288-2298
[10.1109/tgrs.2016.2641258]
Angal, A., X. Xiong, and A. Wu. 2017. "Monitoring the On-Orbit Calibration of Terra MODIS Reflective Solar Bands Using Simultaneous Terra MISR Observations."
IEEE Transactions on Geoscience and Remote Sensing,
55
(3):
1648-1659
[10.1109/tgrs.2016.2628704]
Bhatt, R., D. R. Doelling, A. Angal, et al. 2017. "Characterizing response versus scan-angle for MODIS reflective solar bands using deep convective clouds."
Journal of Applied Remote Sensing,
11
(1):
016014
[10.1117/1.jrs.11.016014]
Chen, H., X. Xiong, A. Angal, X. Geng, and A. Wu. 2016. "Alternative method of on-orbit response-versus-scan-angle characterization for MODIS reflective solar bands."
J. Appl. Remote Sens,
10
(2):
024004
[10.1117/1.jrs.10.024004]
Chang, T., X. J. Xiong, A. Angal, and Q. Mu. 2016. "Assessment of MODIS RSB detector uniformity using deep convective clouds."
J. Geophys. Res. Atmos.,
121
(9):
4783-4796
[10.1002/2015jd024652]
Xiong, X., M. D. King, V. V. Salomonson, et al. 2015. "Moderate Resolution Imaging Spectroradiometer on Terra and Aqua Missions."
Qian/Optical Payloads for Space Missions,
53-89
[10.1002/9781118945179.ch3]
Angal, A., X. Xiong, J. Sun, and X. Geng. 2015. "On-orbit noise characterization of MODIS reflective solar bands."
Journal of Applied Remote Sensing,
9
(1):
094092
[10.1117/1.jrs.9.094092]
Xiong, X., A. Angal, J. Sun, T. Choi, and E. Johnson. 2014. "On-orbit performance of MODIS solar diffuser stability monitor."
J. Appl. Remote Sens,
8
(1):
083514
[10.1117/1.jrs.8.083514]
Sun, J., X. Xiong, A. A. Angal, H. Chen, and X. Geng. 2014. "Time-Dependent Response Versus Scan Angle for MODIS Reflective Solar Bands."
Geoscience and Remote Sensing, IEEE Transactions on ,
52
(6):
3159-3174
[10.1109/TGRS.2013.2271448]
Mishra, N., D. Helder, A. A. Angal, J. Choi, and X. Xiong. 2014. "Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site."
Remote Sens.,
6
(2):
1327-1346
[10.3390/rs6021327]
Lyapustin, A. I., Y. Wang, X. Xiong, et al. 2014. "Scientific impact of MODIS C5 calibration degradation and C6+ improvements."
Atmos. Meas. Tech.,
7:
4353-4365
[10.5194/amt-7-4353-2014]
Choi, T., J. Xiong, A. Angal, G. Chander, and J. Que. 2014. "Assessment of the spectral stability of Libya 4, Libya 1, and Mauritania 2 sites using Earth Observing One Hyperion."
Journal of Applied Remote Sensing,
8
(1):
083618
[10.1117/1.JRS.8.083618]
Chander, G., A. Angal, T. Choi, and J. Xiong. 2013. "Radiometric Cross-Calibration of EO-1 ALI With L7 ETM+ and Terra MODIS Sensors Using Near-Simultaneous Desert Observations."
IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing,
6
(2):
386-399
[10.1109/JSTARS.2013.2251999]
Wu, A., J. Xiong, and A. Angal. 2013. "Derive a MODIS-Based Calibration for the AVHRR Reflective Solar Channels of the NOAA KLM Operational Satellites."
IEEE Trans. Geosci. Remote Sensing,
51
(3):
1405-1413
[10.1109/TGRS.2012.2220780]
Angal, A., J. Xiong, T. Choi, et al. 2013. "Impact of Terra MODIS Collection 6 on long-term trending comparisons with Landsat 7 ETM+ reflective solar bands."
Remote Sensing Letters,
4
(9):
873-881
[10.1080/2150704X.2013.809496]
Wu, A., J. Xiong, D. R. Doelling, et al. 2013. "Characterization of Terra and Aqua MODIS VIS, NIR, and SWIR Spectral Bands' Calibration Stability."
IEEE Trans. Geosci. Remote Sensing,
51
(7):
4330-4338
[10.1109/TGRS.2012.2226588]
Chander, G., N. Mishra, D. L. Helder, et al. 2013. "Applications of Spectral Band Adjustment Factors (SBAF) for Cross-Calibration."
IEEE Trans. Geosci. Remote Sensing,
51
(3):
1267-1281
[10.1109/TGRS.2012.2228007]
Helder, D., K. J. Thome, N. Mishra, et al. 2013. "Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site."
IEEE Transactions on Geoscience and Remote Sensing,
51
(3):
1360-1369
[10.1109/TGRS.2013.2243738]
Toller, G., J. Xiong, J. Sun, et al. 2013. "Terra and Aqua moderate-resolution imaging spectroradiometer collection 6 level 1B algorithm."
Journal of Applied Remote Sensing,
7
(1):
073557
[10.1117/1.JRS.7.073557]
Angal, A. A., J. Xiong, A. C. Wu, G. Chander, and T. Choi. 2013. "Multitemporal Cross-Calibration of the Terra MODIS and Landsat 7 ETM+ Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing,
51
(4):
1870-1882
[10.1109/TGRS.2012.2235448]
Wu, A., X. Xiong, A. Angal, and W. Barnes. 2011. "Evaluation of detector-to-detector and mirror side differences for Terra MODIS reflective solar bands using simultaneous MISR observations."
International Journal of Remote Sensing,
32
(2):
299-312
[10.1080/01431160903464138]
Angal, A., G. Chander, X. Xiong, T. Choi, and A. Wu. 2011. "Characterization of the Sonoran desert as a radiometric calibration target for Earth observing sensors."
Journal of Applied Remote Sensing,
5
(1):
059502-059502-6
[10.1117/1.3613963]
Xiong, X. (., A. Wu, B. Wenny, J. Choi, and A. Angal. 2010. "Progress and lessons from MODIS calibration intercomparison using ground test sites."
Canadian Journal of Remote Sensing,
36
(5):
540-552
[10.5589/m10-082]
Angal, A. A., X. Xiong, T. Choi, and G. Chander. 2010. "Using the Sonoran and Libyan Desert test sites to monitor the temporal stability of reflective solar bands for Landsat 7 enhanced thematic mapper plus and Terra moderate resolution imaging spectroradiometer sensors."
Journal of Applied Remote Sensing,
[10.1117/1.3424910]
Chander, G., X. Xiong, T. Choi, and A. A. Angal. 2010. "Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites."
Remote Sensing of Environment,
114
(4):
925-939
[10.1016/j.rse.2009.12.003]
Refereed
Moyer, D., A. Angal, Q. Ji, J. McIntire, and X. Xiong. 2022. "JPSS-2 VIIRS Pre-Launch Reflective Solar Band Testing and Performance."
Remote Sensing
14
(24):
6353
[10.3390/rs14246353]
Moyer, D., A. Angal, H. Oudrari, et al. 2022. "JPSS-1 VIIRS Prelaunch Reflective Solar Band Testing and Performance."
Remote Sensing
14
(20):
5113
[10.3390/rs14205113]
Xiong, X., J. Sun, A. Angal, and T. Wilson. 2022. "Calibration Inter-Comparison of MODIS and VIIRS Reflective Solar Bands Using Lunar Observations."
Remote Sensing
14
(19):
4754
[10.3390/rs14194754]
Wu, A., X. Xiong, R. Bhatt, et al. 2022. "An Assessment of SNPP and NOAA20 VIIRS RSB Calibration Performance in NASA SIPS Reprocessed Collection-2 L1B Data Products."
Remote Sensing
14
(17):
4134
[10.3390/rs14174134]
Angal, A., X. Xiong, T. Chang, et al. 2022. "Terra and Aqua MODIS collection 7 level 1B algorithm."
Journal of Applied Remote Sensing
16
(03):
[10.1117/1.jrs.16.037502]
Mu, Q., X. Xiong, K. Twedt, A. Angal, and X. Geng. 2022. "Characterization of the on-orbit response versus scan angle for Terra MODIS SWIR bands in Collection 7."
Journal of Applied Remote Sensing
16
(02):
[10.1117/1.jrs.16.024520]
McIntire, J., X. Xiong, J. J. Butler, et al. 2022. "An Overall Assessment of JPSS-3 VIIRS Radiometric Performance Based on Pre-Launch Testing."
Remote Sensing
14
(9):
1999
[10.3390/rs14091999]
Angal, A., C. Bruegge, X. Xiong, and A. Wu. 2022. "Intercalibration of the reflective solar bands of MODIS and MISR instruments on the Terra platform."
Journal of Applied Remote Sensing
16
(02):
[10.1117/1.jrs.16.027501]
Twedt, K., N. Lei, X. Xiong, et al. 2022. "On-Orbit Calibration and Performance of NOAA-20 VIIRS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing
60
1-13
[10.1109/tgrs.2021.3108970]
Twedt, K. A., S. Henderson, X. Xiong, A. Angal, and X. Geng. 2022. "Nonlinear Detector Response of Aqua MODIS Land Imaging Bands."
IEEE Transactions on Geoscience and Remote Sensing
60
1-10
[10.1109/tgrs.2021.3075384]
Angal, A., X. Xiong, and T. Wilson. 2022. "Unscheduled Lunar Observations for Radiometric Characterization of VIIRS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing
60
1-8
[10.1109/tgrs.2021.3112820]
Sun, J., X. Xiong, N. Lei, et al. 2021. "Ten Years of SNPP VIIRS Reflective Solar Bands On-Orbit Calibration and Performance."
Remote Sensing
13
(15):
2944
[10.3390/rs13152944]
Angal, A., X. Xiong, K. Thome, and B. N. Wenny. 2021. "Cross-Calibration of Terra and Aqua MODIS Using RadCalNet."
IEEE Geoscience and Remote Sensing Letters
18
(2):
188-192
[10.1109/lgrs.2020.2973535]
Xiong, X., A. Angal, Y. Li, and K. Twedt. 2020. "Improvements of on-orbit characterization of Terra MODIS short-wave infrared spectral bands out-of-band responses."
Journal of Applied Remote Sensing
14
(04):
[10.1117/1.jrs.14.047503]
Lei, N., K. A. Twedt, X. Xiong, and A. Angal. 2020. "Performance of NOAA-20 VIIRS Solar Diffuser and Solar Diffuser Stability Monitor."
IEEE Transactions on Geoscience and Remote Sensing
59
(9):
7180-7188
[10.1109/tgrs.2020.3032068]
Xiong, X., A. Angal, T. Chang, et al. 2020. "MODIS and VIIRS Calibration and Characterization in Support of Producing Long-Term High-Quality Data Products."
Remote Sensing
12
(19):
3167
[10.3390/rs12193167]
Xiong, X., E. Aldoretta, A. Angal, et al. 2020. "Terra MODIS: 20 years of on-orbit calibration and performance."
Journal of Applied Remote Sensing
14
(03):
1
[10.1117/1.jrs.14.037501]
Angal, A., X. Geng, X. Xiong, et al. 2020. "On-Orbit Calibration of Terra MODIS VIS Bands Using Polarization-Corrected Desert Observations."
IEEE Transactions on Geoscience and Remote Sensing
58
(8):
5428-5439
[10.1109/tgrs.2020.2966000]
Angal, A., X. Xiong, and A. Shrestha. 2020. "Cross-Calibration of MODIS Reflective Solar Bands With Sentinel 2A/2B MSI Instruments."
IEEE Transactions on Geoscience and Remote Sensing
58
(7):
5000-5007
[10.1109/tgrs.2020.2971462]
Twedt, K. A., A. Angal, and X. Xiong. 2020. "Effects of out-of-band and time-varying relative spectral response on the calibration of MODIS reflective solar bands."
Journal of Applied Remote Sensing
14
(02):
1
[10.1117/1.jrs.14.024523]
Yu, S., R. Rosenberg, C. Bruegge, et al. 2020. "Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference."
Remote Sensing
12
(8):
1269
[10.3390/rs12081269]
Bhatt, R., D. R. Doelling, A. Angal, et al. 2020. "Response Versus Scan-Angle Assessment of MODIS Reflective Solar Bands in Collection 6.1 Calibration."
IEEE Transactions on Geoscience and Remote Sensing
58
(4):
2276-2289
[10.1109/tgrs.2019.2946963]
Mu, Q., A. Wu, X. Xiong, and A. Angal. 2020. "Assessment of SNPP VIIRS RSB detector-to-detector differences using deep convective clouds and deserts."
Journal of Applied Remote Sensing
14
(01):
1
[10.1117/1.jrs.14.018503]
Wilson, T., A. Angal, and X. Xiong. 2020. "Orbital Path and Spacecraft Attitude Correction for the MODIS Lunar Spatial Characterization."
IEEE Transactions on Geoscience and Remote Sensing
58
(2):
1063-1073
[10.1109/tgrs.2019.2943254]
Shao, X., T.-C. Liu, X. Xiong, et al. 2019. "Surface Roughness-Induced Spectral Degradation of Multi-Spaceborne Solar Diffusers Due to Space Radiation Exposure."
IEEE Transactions on Geoscience and Remote Sensing
57
(11):
8658-8671
[10.1109/tgrs.2019.2922070]
Li, Y., X. Xiong, J. W. Mcintire, et al. 2019. "Early Calibration and Performance Assessments of NOAA-20 VIIRS Thermal Emissive Bands."
IEEE Transactions on Geoscience and Remote Sensing
57
(11):
9242-9251
[10.1109/tgrs.2019.2925782]
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IEEE Transactions on Geoscience and Remote Sensing
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Tuli, F. T., C. T. Pinto, A. Angal, X. Xiong, and D. Helder. 2019. "New Approach for Temporal Stability Evaluation of Pseudo-Invariant Calibration Sites (PICS)."
Remote Sensing
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Raut, B., M. Kaewmanee, A. Angal, X. Xiong, and D. Helder. 2019. "Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites."
Remote Sensing
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Chang, T., X. Xiong, and A. Angal. 2019. "Terra and Aqua MODIS TEB intercomparison using Himawari-8/AHI as reference."
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Oudrari, H., J. McIntire, X. Xiong, et al. 2018. "An Overall Assessment of JPSS-2 VIIRS Radiometric Performance Based on Pre-Launch Testing."
Remote Sensing
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Angal, A., X. Xiong, D. Helder, M. Kaewmanee, and L. Leigh. 2018. "Assessing the calibration differences in the reflective solar bands of Terra MODIS and Landsat-7 enhanced thematic mapper plus."
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Xiong, X., A. Angal, W. L. Barnes, et al. 2018. "Updates of Moderate Resolution Imaging Spectroradiometer on-orbit calibration uncertainty assessments."
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Angal, A., X. Xiong, A. Wu, X. Geng, and H. Chen. 2018. "Improvements in the On-Orbit Response Versus Scan Angle Characterization of the Aqua MODIS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing
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Angal, A., X. Xiong, Q. Mu, et al. 2018. "Results From the Deep Convective Clouds-Based Response Versus Scan-Angle Characterization for the MODIS Reflective Solar Bands."
IEEE Transactions on Geoscience and Remote Sensing
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Chen, H., X. Xiong, A. Angal, and K. A. Twedt. 2017. "On-Orbit Characterization of the MODIS SDSM Screen for Solar Diffuser Degradation Estimation."
IEEE Transactions on Geoscience and Remote Sensing
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Mu, Q., A. Wu, X. Xiong, et al. 2017. "Optimization of a Deep Convective Cloud Technique in Evaluating the Long-Term Radiometric Stability of MODIS Reflective Solar Bands."
Remote Sensing
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Wu, A., X. Geng, A. Wald, A. Angal, and X. Xiong. 2017. "Assessment of Terra MODIS On-Orbit Polarization Sensitivity Using Pseudoinvariant Desert Sites."
IEEE Transactions on Geoscience and Remote Sensing
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Chang, T., X. Xiong, A. Angal, A. Wu, and X. Geng. 2017. "Aqua and Terra MODIS RSB Calibration Comparison Using BRDF Modeled Reflectance."
IEEE Transactions on Geoscience and Remote Sensing
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Angal, A., X. Xiong, and A. Wu. 2017. "Monitoring the On-Orbit Calibration of Terra MODIS Reflective Solar Bands Using Simultaneous Terra MISR Observations."
IEEE Transactions on Geoscience and Remote Sensing
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Chen, H., X. Xiong, A. Angal, X. Geng, and A. Wu. 2016. "Alternative method of on-orbit response-versus-scan-angle characterization for MODIS reflective solar bands."
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Chang, T., X. J. Xiong, A. Angal, and Q. Mu. 2016. "Assessment of MODIS RSB detector uniformity using deep convective clouds."
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Angal, A., X. Xiong, J. Sun, and X. Geng. 2015. "On-orbit noise characterization of MODIS reflective solar bands."
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Xiong, X., A. Angal, J. Sun, T. Choi, and E. Johnson. 2014. "On-orbit performance of MODIS solar diffuser stability monitor."
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Sun, J., X. Xiong, A. A. Angal, H. Chen, and X. Geng. 2014. "Time-Dependent Response Versus Scan Angle for MODIS Reflective Solar Bands."
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Mishra, N., D. Helder, A. A. Angal, J. Choi, and X. Xiong. 2014. "Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site."
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Lyapustin, A. I., Y. Wang, X. Xiong, et al. 2014. "Scientific impact of MODIS C5 calibration degradation and C6+ improvements."
Atmos. Meas. Tech.
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Choi, T., J. Xiong, A. Angal, G. Chander, and J. Que. 2014. "Assessment of the spectral stability of Libya 4, Libya 1, and Mauritania 2 sites using Earth Observing One Hyperion."
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Chander, G., A. Angal, T. Choi, and J. Xiong. 2013. "Radiometric Cross-Calibration of EO-1 ALI With L7 ETM+ and Terra MODIS Sensors Using Near-Simultaneous Desert Observations."
IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing
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Wu, A., J. Xiong, and A. Angal. 2013. "Derive a MODIS-Based Calibration for the AVHRR Reflective Solar Channels of the NOAA KLM Operational Satellites."
IEEE Trans. Geosci. Remote Sensing
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Angal, A., J. Xiong, T. Choi, et al. 2013. "Impact of Terra MODIS Collection 6 on long-term trending comparisons with Landsat 7 ETM+ reflective solar bands."
Remote Sensing Letters
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Wu, A., J. Xiong, D. R. Doelling, et al. 2013. "Characterization of Terra and Aqua MODIS VIS, NIR, and SWIR Spectral Bands' Calibration Stability."
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Chander, G., N. Mishra, D. L. Helder, et al. 2013. "Applications of Spectral Band Adjustment Factors (SBAF) for Cross-Calibration."
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IEEE Transactions on Geoscience and Remote Sensing
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Toller, G., J. Xiong, J. Sun, et al. 2013. "Terra and Aqua moderate-resolution imaging spectroradiometer collection 6 level 1B algorithm."
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IEEE Transactions on Geoscience and Remote Sensing
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Wu, A., X. Xiong, A. Angal, and W. Barnes. 2011. "Evaluation of detector-to-detector and mirror side differences for Terra MODIS reflective solar bands using simultaneous MISR observations."
International Journal of Remote Sensing
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Angal, A., G. Chander, X. Xiong, T. Choi, and A. Wu. 2011. "Characterization of the Sonoran desert as a radiometric calibration target for Earth observing sensors."
Journal of Applied Remote Sensing
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Xiong, X. (., A. Wu, B. Wenny, J. Choi, and A. Angal. 2010. "Progress and lessons from MODIS calibration intercomparison using ground test sites."
Canadian Journal of Remote Sensing
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Angal, A. A., X. Xiong, T. Choi, and G. Chander. 2010. "Using the Sonoran and Libyan Desert test sites to monitor the temporal stability of reflective solar bands for Landsat 7 enhanced thematic mapper plus and Terra moderate resolution imaging spectroradiometer sensors."
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Chander, G., X. Xiong, T. Choi, and A. A. Angal. 2010. "Monitoring on-orbit calibration stability of the Terra MODIS and Landsat 7 ETM+ sensors using pseudo-invariant test sites."
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