GPS Signal Structure
- L1 frequency at 1575.42 MHz carrying coarse acquisition and navigation data
- L2 frequency at 1227.60 MHz providing precise positioning for authorized users
- L5 frequency at 1176.45 MHz offering improved accuracy and interference resistance
- Spread spectrum modulation ensuring signal security and noise resistance
- Navigation message containing satellite orbital data and timing information
- Pseudorandom noise codes uniquely identifying each satellite transmission
- Carrier phase measurements enabling centimeter-level positioning accuracy
- Signal power levels optimized for global coverage and receiver sensitivity


