Defence Research and Development Organisation (DRDO) is an agency of the Republic of India, charged with the military's research and development, headquartered in New Delhi, India.

As you asking I am telling Akashdeep Aerostat is an aerial surveillance system developed by Aerial Delivery Research & Development Establishment (ADRDE), a laboratory under Defence Research & Development organization (DRDO) of India. It was the star exhibit at the 2011 Aero India show. It is a medium-sized (35 metres long, 23 metres high) helium-filled balloon with a volume of 2,000 cubic metres tethered to the ground with cables. It can carry a 300 kg payload to an altitude of 1,000 meters.

DRDO profile

Formed 1958

Headquarters DRDO Bhavan, New Delhi

Motto Sanskrit: बलस्य मूलं विज्ञानम्

"Strength's Origin is in Science"

Employees 30,000 (5000 scientists)

Annual budget 14,818.74 crore (US$2.3 billion)(2017-18)

Minister responsible Nirmala Sitharaman, Defence Minister of India

Agency executives S. Christopher, Secretary, Department of Defence R&D

G. Satheesh Reddy, Scientific Adviser to Raksha Mantri

Parent agency Ministry of Defence