GALILEO L1F Signal Simulation And Receiver Design

GPS is still the basic of the GNSS(Global Navigation Satellite System)at present. Galileo Navigation Satellite System is the independent GNSS in the field of European civilian use, which has more powerful function, technologic advantages and services. Developing Galileo Navigation Satellite System can be used with the open cooperation of the world. China and Europe has already been strategy partner at making a Galileo plan. This cooperation can improve the development of GNSS in China.Cooperation the different services, Galileo satellites broadcast different signals. It is important that the diversity and complexity of signals determines the developing Galileo signals. Receiver is the most important part in the user's segment of Galileo Navigation Satellite System, it has relations to user's requirements at services. Developing receiver has three different blue prints. First, receiving the only free single frequency signals; Second, receiving double frequency signals in commercial services; Third, receiving three (GPS/Galileo/GLONASS) signals. The Galileo E1-L1-E2 band and GPS L1 band signals are broadcasted at the same center frequency (1575.42 MHz). The Galileo E1-L1-E2 band signals can be received by using the same antenna and RF front end, it's the free signals which can be used at the open services. Consequently, this paper accepts the third blue print.This paper introduces the Galileo Navigation Satellite System's background, structure and services. After analyzing the structure of Galileo Navigation Satellite System's signals, we make a model of L1F signal in Matlab's Simulink tool. Lastly, the paper designs a baseband of Galileo receiver, which has an imaginable demodulation method and validating plan.