The principal navigation radar system on board is now called ‘Rukmani’, and has superceded the ‘Rashmi’ system in Bharat Electronics Ltd’s production line. The downmast navigational radar comes from Northrop Grumman and is licence-assembled by BEL.
The optronic fire-control system used by the 76/62 SRGM is a customised version of Selex-Galileo of Italy’s silent acquisition & surveillance system (SASS), a long range, passive IRST for naval applications, operating simultaneously in MWIR (3-5 μm) and LWIR (8-12 μm) spectral bands. The licence-assembled SASS is designated by BEL as the EON-51. To hide its foreign origins, BEL’s website dealing the Electro Optic Fire Control System (EOFCS) is still left blank (see: http://www.bel-india.com/index.aspx?q=§ionid=446). The same goes for the downmast navigational radar (see: http://www.bel-india.com/index.aspx?q=§ionid=444).--Prasun K. Sengupta