| Currently, the majority of satellite receivers in our markets are based on GPS. But now, China’s Beidou satellite navigation system is developed and the Beidou_ICD_V1.0is public to us. Satellite receivers based on Compass will have a wide range of markets.Thus, research based on the Beidou satellite navigation receiver has a very positive meaning for the development of satellite navigation industry in the future.Aiming at current situation that the Beidou Navigation Receiver for civil is low accuracy with single function,the project selected ARM+FPGA to design the Beidou receiver based on the technology of ARM Embedded and Software Defined Radio.At the same time, the open source embedded Linux was selected as the software system,and the baseband signal of the Beidou receiver was processed by FPGA, while the whole system was controlled by ARM. At last,the research and design of the soft receiver was finished.This project designed the receiver’s hardware and software, and the signal processing algorithms involved was also researched.Finally,the project carried out the final receiver circuit schematic design; researched satellite baseband signal processing algorithms;designed FPGA digital signal processing module;transplanted Linux system;finished communication between ARM and FPGA;designed satellite navigation operation program;designed the QT application,etc.At last,achieved a single point positioning Beidou receiver. |
