The current configuration of the NMGV based on the renders looks very similar to a Khukri Class missile boat/ corvette equipped with BrahMos instead of the P15/P20M missile.
Sensors :
BEL - Naval X-Band Multi Function Radar (X-BMFR) : Primary AESA radar and VL-SRSAM (FFBNW)
EL/M-2221 STGR fire-control radar - Fire control radar for 76mm SRGM and AK 630 CIWS