2017  Chairman Advisory Committee on Space Science (ADCOS)

2010:-Member Committee to Review the Chandayaan-2Payload Proposals.

2005 -2017 :- 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