Global Positioning System (GPS):
Global Positioning System provides time and location-based information to a GPS receiver, located anywhere on or near the earth surface. GPS works in all weather conditions, provided there is an unobstructed line of sight communication with 4 or more GPS satellites. GPS is managed by the US Air Force.
- Component of GPS system:
- Space Segment
- Control segment
- User segments
Satellite Navigation System (SNS):
A satellite navigation system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows small electronic receivers to determine their location to high precision. It is based on a wide network of artificial satellites that transmit radio signals in medium earth orbit.
GNSS consist of three main satellite technologies:
- GPS
- Glonass
- Galileo
Let’s see the difference between GPS and Satellite Navigation System:
| S.NO. | GPS | Satellite Navigation System |
|---|---|---|
| 1 | GPS is a fully-functional satellite-based navigation system. | Satellite navigation is a system based on a wide network of artificial satellites. |
| 2 | GPS satellites transmit continuous microwave radio signals composed of two carriers, two codes and a navigation message. | It describes constellation of satellites that provide navigation, positioning and timing services globally. |
| 3 | GPS is maintained by the U.S. Department of Defense. | It provide autonomous geospatial positioning |
| 4 | GPS satellites broadcast timely signals via radio to the GPS receivers. | Satellite navigation systems help us to drive across unknown roads, whether by land, sea or air, etc. |
| 5 | GPS is a joint name for group of satellites that are orbiting around the earth. | Satellite Navigation is a special software that makes use of GPS signals |
| 6 | It processes the signal using its built-in software. | The position, velocity and time estimates obtained from the satellite navigation system. |
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