The Indian navy is to go ahead with a "limited upgrade" of its carrier-borne BAE Systems Sea Harrier fighters.

This is to be completed in 2008 and will extend their lives by 15 years.

The upgrade, to be performed by Bangalore-based Hindustan Aeronautics, will include more advanced sensors, radars and avionics.

According to defence minister A K Antony, half of India's Harrier fleet has been lost in accidents.