What is a "L1 Gps Band"? The Most Authoritative Explanation.

What is a "L1 Gps Band"? The Most Authoritative Explanation.

What is L1C in GPS?

L1C is the fourth civilian GPS signal, designed to enable interoperability between GPS and international satellite navigation systems. Its name refers to the radio frequency used by the signal (1575 MHz, or L1) and the fact that it is for c ivilian use. There are also two military signals at L1, as well as the legacy C/A signal.

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 signals are transmitted by GPS in L1?

Three signals are transmitted at the moment by GPS in L1: C/A Code, P (Y) Code,M-Code and the new L1C signal, which is in the process of being fielded as L2C and L5. The legacy civil signal, called L1 C/A or C/A at L1, will continue broadcasting in the future.

What is the difference between L1 and L2 GPS?

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. It also has a military code and a civilian use code.

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