What is a "L1 L2 Gps"? The Most Authoritative Explanation.
What is the difference between L1 and L2 in GPS?
The L2 operates at 1227.60 MHz, which is faster than the L1. This permits the signal to pass through obstacles such as cloud cover, trees, and buildings more effectively. The L2 frequency transmits the P (Y) code and, on newer GPS satellites, the C/A code (referred to as L2C), providing civilian users with a second publicly available code.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 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 frequency is GLONASS L2 (G2)?
GLONASS L2 (G2) is located at 1246 MHz and also uses FDMA. Plans call for future satellites to transmit at a new frequency, called L3, at 1201 MHz, right next to GALILEO E5b). BeiDou B1 is near L1, centered at 1561.098 MHz. A second signal is planned for directly above L1, at 1589.742 MHz.
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