The Survey of India complains
South Korea faces the heat.
Where GNSS signals are jammed more than often.
Even US Army would want to limit its dependence on GPS.
The vulnerability of GNSS is increasingly being felt
With increasing dependence on GNSS
Especially on application areas where consequences could be far reaching.
Though endeavors are being made
To make GNSS more robust
Still, the efforts for a few backups,
Must be encouraged
And the ones that existed
Could be revived.