Positioning method prior to the development of GPS, it uses Radio waves to detect range.
Method Type:
1) RADAR
2) Distance by Timing
3) SHORAN
4) HIRAN
5) Sputnik
Positioning method prior to the development of GPS, it uses Radio waves to detect range.
Method Type:
1) RADAR
2) Distance by Timing
3) SHORAN
4) HIRAN
5) Sputnik