Editorships

    1. Editor-in-Chief, IEEE Transactions on Geoscience and Remote Sensing, 1996 to 2000.

    2. Member, Editorial Board of IEEE ACCESS, 2016-present

    3. Associate Editor, IEEE Transactions on Geoscience and Remote Sensing, 1987-1995, and 2001-2009.

    4. Member, Editorial Board of Proceeding of IEEE, 2007 to 2012.

    5. Guest Editor, Special issue of Proceedings of IEEE , ''Satellite Remote Sensing Missions for Monitoring Water, Carbon and Global Climate Change'' , May 2010.

    6. Associate Editor, Radio Science, 1988-1993.


Major Professional Activities, Services and National Committees

    1. President, Electromagnetics Academy, March 2008-present.

    2. Chair, Photonics and Electromagnetics Research Symposium (PIERS), March 2008-present

    3. President, IEEE Geoscience and Remote Sensing Society(GRSS), 2006-2007.

    4. Chair, IEEE Geoscience and Remote Sensing Society Conference Publications Committee 2015-present

    5. Member, IEEE Electromagnetics Award Committee, 2013-2015, 2018-present

    6. Member, IEEE Antennas and Propgation Society Meetings Committee, 2019-present

    7. Member IEEE Conference Sub-Committee on Conference Applications, 2019-present

    8. Member, IEEE Antennas and Propgation Society Sub-Committee on Paper Awards, 2019-present

    9. Member, IEEE Publication Services and Products Board (PSPB), 2008-2009, 2013-2015

    10. Member, IEEE Conference Committee, 2014-2015

    11. Member, IEEE Fellow Committee, 2015-2017.

    12. Member, IEEE PSPB Publication Conduct Committee, 2013-2016

    13. Member, IEEE Conference Quality Committee, 2015-2016

    14. Member, IEEE TAB ADHOC Open Access Committee, 2014

    15. Member, IEEE TAB Periodicals Review and Advisory Committee, 2010-2013.

    16. Chair, IEEE Geoscience and Remote Sensing Society Fellow Evaluation Committee, 2012-2014.

    17. Member, IEEE Antennas and Propagation Society Fellow Evaluation Committee, 2010-2014.

    18. Chair, IEEE TAB Periodicals Committee, 2008-2009.

    19. Member, IEEE Technical Activities Board (TAB), 2006-2009.

    20. AdCom Member, IEEE Geoscience and Remote Sensing Society, 2002-2010.

    21. Member, IEEE Technical Activities Board (TAB) Periodicals Committee, 2007-2011.

    22. Member, IEEE TAB Finance Committee, 2008-2009.

    23. Chair, IEEE TAB Periodicals Review and Advisory Committee, 2010-2011.

    24. Member, IEEE TAB Nominations Committee, 2010-2011.

    25. Chair, IEEE Geoscience and Remote Sensing Society Nominations Committee, 2010-2011.

    26. Executive Vice President, IEEE Geoscience and Remote Sensing Society, 2004-2005.

    27. Member of Commissions B and F of URSI.

    28. General Chair, IEEE Geoscience and Remote Sensing Symposium (IGASS98), 1998, Seattle, WA.

    29. Technical Chair, Progress in Electromagnetics Research Symposium (PIERS), 1995, Seattle, WA.

    30. Technical Chair, IEEE Antennas and Propagation Symposium and URSI Radio Science Meeting, 1994, Seattle, WA.