2012 Member Scientific Advisory Committee, Indian Institute of Astrophysics (IIA), Bangalore.
2010 :- Chairman Review panel of TIFR Balloon Facility.
2010:- Member,’State Council of Climate change’, Govt: of Himachal Pradesh
2004 -2006 :- Member, Governing Council, Indian National Centre for Ocean Information Services, Hyderabad
2003-2004: –  Member of the International Academy of Astronautics Study Team on `Space to promote peace –initial focus on reconstruction of Afghanistan.
2002-2004 :-  President, Indian Society of Remote Sensing.
1999-2001 :- President, Gujarat Science Academy.
1999 onwards :-  Consulting Faculty, Taleem Research Foundation, Ahmedabad
1997-1998 :-  Member, Steering Committee, Centre for Development of Advanced Computing, C-DAC, Pune
1997-2000 :- Member, Research Council, National Institute of Oceanography
1996-2000 :- President, Technical Commission-I, International Society for Photogrammetry and Remote Sensing (ISPRS)
1996-1999 :- President, Indian Society of Geomatics
1994-1997 :- Member, Research Council, Central Glass and Ceramic Research Institute, Calcutta
1994-1996 :- President, Indian Society of Remote Sensing
1993-1996 :- Vice-President, Indian Society of Geomatics
1993-1996 :- Member, Management Council, Vikram Sarabhai Centre for Development Interaction (VIKSAT)
1992-1998 :- Member, Andhra Pradesh State Remote Sensing Applications Centre Society.
1989-1998 :- Member, Governing Body of Centre for Earth Science Studies, Trivandrum
1988-1998 :- Member, Advisory Committee for Remote Sensing Applications Centre (Madhya Pradesh), Bhopal.
1988-1991 :- Member-Secretary, Indian National Committee for Space Research (INCOSPAR)
1985-1988 :- Member, Governing Council, Indian Institute of Astrophysics (IIA), Bangalore


Special Responsibilities/Assignments (ISRO / DOS)

 

2010:-Member Committee to Review the Chandayaan-2Payload Proposals.
2005 onwards :- Vice-chairman, Advisory Committee on Space Science (ADCOS)
2004-2008 :- Chairman, Science Advisory Board, Chandrayaan-1
2004-2015 :- Chairman, ASTROSAT Payload Monitoring Committee
2009 onwards :- Chairman, Scientific Advisory Committee, Space Physics Laboratory (SPL), VSSC, Trivandrum.
2003 onwards :- Chairman, Scientific Advisory Committee, National Atmospheric Research Laboratory, Tirupati
2000-2002 :- Chairman, Lunar Mission Study Task Force
1998-2001 :- Chairman, Technical Review Committee for Remote Sensing Applications
1997-1998 :- Chairman, Management Council, Remote Sensing Application Missions (RSAM)
1995-1998 :- Member, INSAT Project Management Council
1992-1998 :- Member, Management Council for Laboratory for Electro-Optics Systems (LEOS)
1992-1998 :- Member, Mission Management Council for Integrated Mission for Sustainable Development
1989-1998 :- Member, Project Management Council, Indian Remote Sensing Satellite
1988-1997 :- Alternate Chairman, Management Council, Remote Sensing Application Missions (RSAM)
1988-1998 :- Chairman, Steering Committee for Remote Sensing Applications of Agriculture Mission
1987-1990 :- Director, Indian Remote Sensing Satellite Utilisation Programme
1987-1988 :- Member, Executive Committee, Microwave Remote Sensing Programme (EC-MRSP)
1987-1988 :- Member, Remote Sensing Application Mission Council (RSAMC)
1984-1992 :- Associate Project Director, (Very High Resolution Radiometer, Payload), INSAT-II Test Spacecraft Project
1980-1988 :- Associate Project Director (Payloads), Indian Remote Sensing Satellite Project (IRS)
1975-1985 :- Principal scientistSEO/ Bhaskara TV payload