• He was awarded the
Shanti Swarup Bhatnagar Prize for Physical Science in 1968. The citation read: • Foreign Fellow of
Bangladesh Academy of Sciences • Awarded the
Padma Bhushan in 1987 • Fellow of the
Royal Society of London in 1988. • President of the International Union of Radio Sciences - URSI between 1984 and 1987 • Member, General Committee of International Council of Scientific Unions between 1984 and 1988 • Fellow - Indian National Science Academy in 1961 • Fellow of the
Indian Academy Sciences in 1974 • Fellow of the Thud World Academy of Sciences in 198 • President, National Academy of Sciences between 1992 and 1993 • Honorary President, URSI in 2002 • Jawahar La1 Nehru Fellowship between 1978 and 1980 • Shanti Swarup Bhatnagar Fellowship between 1991 and 1996 • Senior Homi Bhabha Fellowship between 1996 and 1998 • Shanti Swarup Bhatnagar Memorial Award for Physical Sciences in 1968 • C. V. Raman Award of
University Grants Commission in 1982 • Om Prakash Bhasin Award for Physical Physical Sciences in 1987 • FICCI Award for Physical Sciences in 1982 • Meghnad Saha Golden Jubilee Award of Indian Association of Science in 1991 • Modi Science Award in 1992 • Vasuic Award on Environmental Science and Technology in 2002 • Meghnad Saha Medal by Asiatic Society in 1994 • S. K. Mitra Centenary Medal by
Indian Science Congress Association in 1995 • DSc (Honors Causa) degrees from the universities of
Manipur,
Kolkata,
Jadavpur, Burdwan North Bangal, Vidhyasagar. ==Personal life==