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

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

    3. Member, IEEE Conference Committee, 2014-2015

    4. Member, IEEE Technical Program Integrity Committee (TPIQ) 2015-present

    5. Member, IEEE Fellow Committee 2015-present

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

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

    8. Member, IEEE Electromagnetics Award Committee, 2013-2015

    9. President, Electromagnetics Academy, March 2008-present

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

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

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

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

    14. Member, Administrative Committee, IEEE Geoscience and Remote Sensing Society, 2002-2010.

    15. Member, IEEE Technical Activities Board (TAB) Periodicals Committee, 2007, 2010-2011.

    16. Member , IEEE TAB Periodicals Review and Advisory Committee, 2012-2013

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

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

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

    20. Member, Commissions B and F of URSI.

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

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

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