E5Signal Generation And Verification Of Galileo System

With the development of Global Navigation Satellite System(GNSS), satellite navigation applications has been showing a booming trend in all countries. The Galileo system is a satellite navigation system for civil, which uses a new modulation. Study Galileo signal system, will provide a reference for the research of China’s satellite navigation.Text departure from E5-band signal of Galileo civil signal firstly. Studying of the principle of pseudo-code noise(PRN) code generator of E5signal, and the corresponding PRN code generation and verification. Next comes the principle of the E5signal modulation AltBOC (15,10), giving the simulation results of the constant envelope AltBOC (15,10).At last, generate the signal of baseband E5by the Matlab, analyse E5signal time-frequency domain characteristics and power spectrum characteristic, through a comparative analysis to verify its correctness.Secondly,the actual frequency E5signal is obtained with a baseband E5signal by the hardware RF circuit. Introduce the design method of signal generation hardware circut.Based on the graphical programming software Lab VIEW to achieve the program to read a short period of time E5signal, generation and verification of high-frequency E5signal generated by the hardware platform; with the data streaming,using queue and producer-consumer structure, to achieve long time E5signal generation and verification. Finally, Verified by the spectrum analyzer and capturing results, verify the hardware platform to generate E5signal is correct.