Hassan Oudrari

Hassan Oudrari

  • CHIEF ENGINEER
  • 301.614.6600 | 301.867.2094
  • NASA/GSFC
  • Mail Code: 618
  • Greenbelt , MD 20771
  • Employer: SCIENCE SYSTEMS AND APPLICATIONS INC
  • Brief Bio

    A chief engineer at Science Systems and Applications Inc., providing support to Code 618 Biospheric Sciences Laboratory at NASA/GSFC. Hassan Oudrari worked in the field of remote sensing data calibration and image processing for the last 20 years, and supported multiple space missions such as NOAA-AVHRR, Landsat, MODIS and VIIRS. His research includes sensor calibration and characterization as well as use of radiative transfer for atmospheric correction. Dr. Oudrari was the Government lead for Suomi-NPP instruments calibration and validation plan, the NASA representative supporting the S-NPP VIIRS instrument pre-launch testing and characterization, and post-launch intensive calibration and validation. He is currently coordinating NASA support to JPSS VIIRS development, working closely with JPSS project management, sensor contractors, and providing status on the sensor performance and issues. Dr. Oudrari received his Ph.D. in physics of remote sensing from Denis Diderot University (Paris, France) in 2004, and a M.Sc. in project management in 2014 from George Washington University.

    Research Interests

    Satellite Systems - Space-based Instruments Calibration and Validation

    Dr. Oudrari's research interests are centered on space instruments development, systems engineering and project management. Dr. Oudrari has led and delivered successful space systems verification and validation, had coordinated a large team of experts to calibrate and characterize multiple space based instruments, such as Landsat, AVHRR, MODIS and VIIRS. Dr. Oudrari has a wide experience working for large scale NASA and NOAA projects and programs, multi-organizational and multi-national initiatives, interacting closely with vendors, subcontractors and multiple government agencies, and development and delivery of professional services offerings.

    Dr. Oudrari combines strong analytical, leadership, and communication skills with experience in team building and high performance teams. Highly skilled in motivating and mentoring staff to achieve objectives. Excellent organizational experience guiding strategy development, and implementing process improvements. He has a strong communication abilities exhibited through presentations at major program reviews and milestone meetings.

    Positions/Employment

    12/2014 - Present

    Chief Engineer

    Science Systems and Applications Inc., Lanham, MD Coordinating a high performance team of scientists to calibrate and characterize a series of space-based Earth Observation sensors on-board the NASA/NOAA Suomi-NPP and JPSS programs.
    My responsibilities include the coordination of large team of scientists and experts to provide an independent performance verification and validation of one of the key instruments on S-NPP and JPSS spacecrafts, the Visible Infrared Imaging Radiometer Suite (VIIRS). I'm the NASA representative leading the planning, and assigning roles and responsibilities, as well as conducting continuous interactions with the sensor and spacecraft contractors and other government teams. I'm also supporting all major reviews and milestone, and reporting on the sensor development status to the project and program management.
    8/2009 - 11/2014

    Chief Engineer

    Sigma Space Corporation, Lanham, MD Satellite Systems Engineering - Sensor Calibration and Characterization
    Coordinating a high performance team of scientists to calibrate and characterize a series of space-based Earth Observation sensors on-board the NASA/NOAA Suomi-NPP and JPSS programs.

    My responsibilities include the coordination of large team of scientists and experts to provide an independent performance verification and validation of one of the key instruments on S-NPP and JPSS spacecrafts, the Visible Infrared Imaging Radiometer Suite (VIIRS). I'm the NASA representative leading the planning, and assigning roles and responsibilities, as well as conducting continuous interactions with the sensor and spacecraft contractors and other government teams. I'm also supporting all major reviews and milestone, and reporting on the sensor development status to the project and program management.

    Education

    The George Washington University - School of Business
    Master of Science in Project Management (MSPM), 3.93
    2010 – 2013

    Université Pierre et Marie Curie (Paris VI)
    Ph.D, Physics of Space Remote Sensing, Highest Distinction
    2001 – 2004

    Awards

    Publication Award
    HOBI award for Best Publication, "SNPP VIIRS on-orbit calibration methodologies and performance”, TGRS, August 2015.

    Certificate of Recognition

    NOAA Joint Polar Satellite System (JPSS)
    September 2012

    Presented in appreciation of the hard work and dedication which contributed to the successful launch and commission of Suomi National Polar-Orbiting Partnership Satellite System.

    Group Achievement Award
    National Aeronautics and Space Administration (NASA)
    July 2012

    For extraordinary dedication, skill, teamwork, and perseverance in developing and delivering the Suomi National Polar-orbiting Partnership (NPP) Mission for the Nation.

    SSAI Performane Award
    SSAI
    June 2008

    SSAI is proud to award you this certificate for extreme dedication and successful contributions to addressing science impact, engineering, and programmatic issues for S-NPP VIIRS leading to commendation by customer.

    SSAI Performance Award
    SSAI
    August 2007

    Science Systems and Applications, Inc. is proud to me with certificate in recognition of contrbutions to the discovery and characterization of VIIRS optical crosstalk issue, to quantification of its impact on science data records, and to improvements in the design and test plans for the VIIRS flight units.

    Exceptional Contrbiutions Award
    IEEE Geoscience and Remote Sensing Society Chapter
    July 1999

    Doctrate with Highest Discinction
    University of Pierre et Marie Curie (Paris VI)
    June 1994

    Doctorate Assistanship Award
    French Ministry of Cooperation
    September 1991

    Publications

    Refereed

    Xiong, X., J. J. Butler, H. Oudrari, et al. J. McIntire, S. Lee, N. Lei, T. Schwarting, and J. Sun. 2015. "Pre-launch Radiometric Characterization and Calibration of the S-NPP VIIRS Sensor." IEEE Transactions on Geoscience and Remote Sensing, 53: 2195-2210.

    Xiong, X., J. Butler, K. Chiang, et al. B. Efremova, J. Fulbright, N. Lei, J. McIntire, H. Oudrari, J. Sun, Z. Wang, and A. Wu. 2014. "VIIRS on-orbit calibration methodology and performance." J. Geophys. Res. Atmos., 119 (9): 5065-5078 [10.1002/2013JD020423]

    Xiong, J., H. Oudrari, K. Chiang, et al. J. McIntire, J. Fulbright, A. Wu, N. Lei, J. Sun, B. Efremova, Z. Wang, S. Lee, T. Schwarting, and J. Butler. 2013. "VIIRS early on-orbit calibration activities and performance." Geoscience and Remote Sensing Symposium (IGARSS), IEEE International: [Full Text (Link)]

    Non-Refereed

    Oudrari, H., J. W. Mcintire, D. Moyer, et al. V. Chiang, J. Xiong, and J. Butler. 2012. "Preliminary Assessment of Suomi-NPP VIIRS On-orbit Radiometric Performance."

    Oudrari, H., X. Xiong, J. J. Butler, S. Xiong, and N. Che. 2007. "Sensitivity Study for Sensor Optical and Electric Crosstalk Based on Spectral Measurements: An Approach to Developmental Sensors Using Sensors Such As MODIS." Proc IGARSS Barcelona, Spain, 2856-2859.

    Brief Bio

    A chief engineer at Science Systems and Applications Inc., providing support to Code 618 Biospheric Sciences Laboratory at NASA/GSFC. Hassan Oudrari worked in the field of remote sensing data calibration and image processing for the last 20 years, and supported multiple space missions such as NOAA-AVHRR, Landsat, MODIS and VIIRS. His research includes sensor calibration and characterization as well as use of radiative transfer for atmospheric correction. Dr. Oudrari was the Government lead for Suomi-NPP instruments calibration and validation plan, the NASA representative supporting the S-NPP VIIRS instrument pre-launch testing and characterization, and post-launch intensive calibration and validation. He is currently coordinating NASA support to JPSS VIIRS development, working closely with JPSS project management, sensor contractors, and providing status on the sensor performance and issues. Dr. Oudrari received his Ph.D. in physics of remote sensing from Denis Diderot University (Paris, France) in 2004, and a M.Sc. in project management in 2014 from George Washington University.

    Publications

    Refereed

    Xiong, X., J. J. Butler, H. Oudrari, et al. J. McIntire, S. Lee, N. Lei, T. Schwarting, and J. Sun. 2015. "Pre-launch Radiometric Characterization and Calibration of the S-NPP VIIRS Sensor." IEEE Transactions on Geoscience and Remote Sensing 53 2195-2210

    Xiong, X., J. Butler, K. Chiang, et al. B. Efremova, J. Fulbright, N. Lei, J. McIntire, H. Oudrari, J. Sun, Z. Wang, and A. Wu. 2014. "VIIRS on-orbit calibration methodology and performance." J. Geophys. Res. Atmos. 119 (9): 5065-5078 [10.1002/2013JD020423]

    Xiong, J., H. Oudrari, K. Chiang, et al. J. McIntire, J. Fulbright, A. Wu, N. Lei, J. Sun, B. Efremova, Z. Wang, S. Lee, T. Schwarting, and J. Butler. 2013. "VIIRS early on-orbit calibration activities and performance." Geoscience and Remote Sensing Symposium (IGARSS) IEEE International [Full Text (Link)]

    Non-Refereed

    Oudrari, H., J. W. Mcintire, D. Moyer, et al. V. Chiang, J. Xiong, and J. Butler. 2012. "Preliminary Assessment of Suomi-NPP VIIRS On-orbit Radiometric Performance."

    Oudrari, H., X. Xiong, J. J. Butler, S. Xiong, and N. Che. 2007. "Sensitivity Study for Sensor Optical and Electric Crosstalk Based on Spectral Measurements: An Approach to Developmental Sensors Using Sensors Such As MODIS." Proc IGARSS 2856-2859

                                                                                                                                                                                            
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