India is one of the countries which will benefit from GLONASS as it would avail the precision signal from GLONASS for military application. There are many combined GPS/GLONASS navigation gadgets available in the market for civilian applications.
Recently India used GLONASS signal for its Brahmos test and it successfully acquired and engaged the target and has been performing reliably and consistently.
GLONASS Navigation Satellite and Signal Modernisation Prospects
Source: TSNIMASH