Navigation
Handicaps in the current systems
- Long range navigation limited to VLF
- Performance limited due to terrain conditions
- Gaps exists at various current levels
- Inertial navigation and reference system alone reliable for oceanic routes with lower coverage
- Dissimilar systems architecture and performance
- Huge expenditure towards provision and maintenance of terrestrial aids
- Restrictions imposed on optimization of facilities due to terrain requirements
- Congestion in the operating frequency bands