GPS Jamming and Spoofing are both methods of disrupting GPS signals, but they work in different ways and have distinct impacts.
GPS jamming blocks or overwhelms GPS signals by transmitting noise or interference on the same frequencies used by GPS satellites (e.g., 1.57542 GHz for civilian L1 signals).
GPS spoofing emits false GPS signals that imitate authentic satellite signals, leading the receiver to compute an inaccurate position, time, or velocity.
Here’s a chart that highlights the differences between GPS jamming and GPS spoofing:
| Feature | GPS Jamming | GPS Spoofing |
|---|---|---|
| Definition | Disrupting or blocking GPS signals with interference or noise. | Faking or mimicking GPS signals to deceive receivers. |
| Effect on GPS Systems | Loss of GPS signal or inability to lock onto satellites. | False location data or misleading GPS readings. |
| Signal Type | Broadcasts interfering signals on the same frequency as GPS (1575 MHz). | Broadcasts fake GPS signals that mimic real satellite signals. |
| Result | GPS receivers cannot detect legitimate signals and show no position or error messages. | GPS receivers are misled into thinking they are in a different location. |
| Technology | Simple jammers that emit broadband interference or noise. | Complex devices that simulate satellite signals with high precision. |
| Detection | Easier to detect with tools like RF spectrum analyzers or signal scanners. | Harder to detect because the signals appear like legitimate GPS data. |
| Common Use | Disruption of GPS services, preventing tracking or navigation. | Deception of navigation systems, redirecting or altering locations. |
| Effect on Navigation | Stops GPS devices from working correctly. | Causes wrong navigation paths or misleading directions. |
| Legal/Defensive Use | Often illegal as it interferes with public signals. | Also illegal as it manipulates systems, though harder to detect. |