The investment will further enable the group's initiatives in emerging technology, it added.
RSBVL proposes to make a further investment of up to Rs 125 crore, subject to Asteria achieving agreed milestones, and is expected to be completed by December 2021, it said.
"Post the further investment, the shareholding of RSBVL will increase to 87.3 per cent of the equity share capital of Asteria," it added.
On Thursday, RSBVL had said it has picked up 85 per cent stake in NowFloats Technologies for a cash consideration of Rs 141.63 crore.
Asteria, incorporated in India in June 2011, is a full-stack drone technology company with in-house drone manufacturing capabilities, and also offers software solutions to provide actionable insights from aerial data, intending to deliver "drone-as-a-service" digital platform.
An early stage company, Asteria had a turnover of Rs 1.96 crore in 2018-19. SR RVK