Why India Desperately Needed its own GPS like Navigation System

The Indian space flight workhorse PSLV-C33 shot off on its 35th flight to launch India’s 7th navigational satellite – a 1425 kg IRNSS-1G satellite, part of the Indian Regional Navigation Satellite System (IRNSS).  The launch was into a sub geosynchronous transfer orbit with a perigree (nearest point to earth) of