What is a "L1 Frequency"? The Most Authoritative Explanation.

What is the frequency of the L1 signal?

The L1 signal uses the frequency 1575.42 MHz ( source). Since the L1 is the oldest and most established signal, even the cheapest GPS units are capable of receiving it. However, because its frequency is relatively slow it is not very effective at traveling through obstacles. The L2 frequency was implemented after the L1.

What is GPS L1 L2 L2 and L5 frequency?

For example, L1 frequency is used to track GPS satellite location, L2 frequency is used to track the health of the GPS satellites and the L5 frequency is used to improve accuracy for civilian use such as aircraft precision approach guidance. Let’s look into details about GPS L1, L2, and L5 Frequencies-

What is the difference between L1 and L2?

The L1 signal uses the frequency 1575.42 MHz. (source) Since the L1 is the oldest and most established signal, even the cheapest GPS units are capable of receiving it. However, because its frequency is relatively slow it is not very effective at traveling through obstacles. L2 The L2 frequency was implemented after the L1.

What data does the L1 send in a navigation message?

L1 sends a navigation message at 1575.42 MHz, the coarse acquisition C/A code (which is open to the public), and an encrypted precision (P) code known as the P (Y) code (restricted access). The navigation message is a low-bit-rate communication that contains the following data: GPS time and date. The status and health of the satellite.