摘要：Will the new L2C signals be able to be tracked by existing L2-capable (civilian) receivers?
A: The new civil signals being broadcast on the GPS L2 frequency from the latest GPS Block IIR-M and IIF satellites are significantly different from the existing P/Y codes modulated on the same frequency by the older Block II GPS satellites. The existing P (or the encrypted P/Y) signal is a 10.023 Mbps (million bits per second) binary code that is seven days in length. In other words, the P/Y code symbol pattern repeats every week. The new L2C signal is a 1.023Mbps signal that is composed of two sub-codes time-multiplexed together.
