These signals have robust features for GPS jammers to block them effectively. Below are the resistant signals.
- L5 Signals: L5 has a higher power than the older L1 and L2 signals, which makes it more resistant to jamming.
- Dual-Frequency GPS (L1 + L5, or L1 + L2): Dual-frequency GPS systems, which combine signals from L1 (the most common civilian signal) and L5 or L2, are more resistant to interference.
- GPS(US), Galileo (Europe's GNSS), GLONASS (Russia's GNSS), and BeiDou (China's GNSS): These GPS signals provide additional signals that can be used for location-based services. However, a multi-constellation GNSS receiver that uses signals from all these systems can provide more resilience against jamming. If one system is jammed, the others may still be functional, reducing the overall impact.