Common questions

What frequencies do GPS satellites use?


What frequencies do GPS satellites use?

All GPS satellites broadcast on at least two carrier frequencies: L1, at 1575.42 MHz, and L2, at 1227.6 MHz (newer satellites also broadcast on L5 at 1176 MHz).

How many satellites does the US GPS use?

31 satellites
To accomplish this, each of the 31 satellites emits signals that enable receivers through a combination of signals from at least four satellites, to determine their location and time. GPS satellites carry atomic clocks that provide extremely accurate time.

What are the two main carrier frequencies of GPS?

The GPS satellites transmit signals on two carrier frequencies. The L1 carrier is 1575.42 MHz and carries both the status message and a pseudo-random code for timing. The L2 carrier is 1227.60 MHz and is used for the more precise military pseudo-random code.

What frequency does GNSS use?

GNSS Frequencies and Signals

Signal Frequency (MHz)
L1 C 1575.42
L1S 1575.42
L2C 1227.6
L5 1176.45

What frequency is L5?

1176 MHz
Features. L5 is the third civilian GPS signal, designed to meet demanding requirements for safety-of-life transportation and other high-performance applications. Its name refers to the U.S. designation for the radio frequency used by the signal (1176 MHz).

What is the difference between GNSS and GPS?

GNSS and GPS work together, but the main difference between GPS and GNSS is that GNSS-compatible equipment can use navigational satellites from other networks beyond the GPS system, and more satellites means increased receiver accuracy and reliability.

Does GPS need line of sight?

The antenna of a standard GPS receiver needs to have a clear line-of-sight (LOS) view to the satellites for successful signal tracking and position determination. In fact, there are often more GPS signals arriving at a receiver’s antenna than just the LOS signals.