What is a "Gps Fréquence L1 L2 L3 L4 L5"? The Most Authoritative Explanation.
What is L1 and L2 in GPS?
In the case of the original GPS design, two frequencies are utilized; one at 1575.42 MHz (10.23 MHz × 154) called L1; and a second at 1227.60 MHz (10.23 MHz × 120), called L2. The C/A code is transmitted on the L1 frequency as a 1.023 MHz signal using a bi-phase shift keying ( BPSK ) modulation technique.What are L5 GPS signals?
The insertion of L5 GPS signals is part of the US Department of Defense’s modernization activities. Now there are three civilian GPS frequencies: L1 at 1575.42 MHz, L2 at 1227.60 MHz, and L5 at 1176.45 MHz. Each frequency has unique properties that make it better suited for certain types of applications.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 frequency is L5?
L5 frequency information. Broadcast on the L5 frequency (1176.45 MHz, 10.23 MHz × 115), which is an aeronautical navigation band. The frequency was chosen so that the aviation community can manage interference to L5 more effectively than L2.
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