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Traditional GPS receiver system consists of hardware components such as a GPS antenna, a Radio Frequency Integrated Circuit (RFIC) front-end and a dedicated Baseband processor.
Essentially, the GPS antenna is used to receive and amplify the weak signals from the GPS satellites. The RFIC's responsbilities are to further amplify and then convert the received analog GPS signals to digital format. Finally, the baseband processor will decode the received digitized GPS signals and perform a series of mathematically intense signal processing algorithms to calculate Position (Latitude/Longitude/Height), Velocity and Time (also known as "PVT") of the user.