Design And Implementation Of GNSS Satellite IF Signal Collector

In recent years, various types of applications based on global satellite positioning system are developing rapidly. The U.S. GPS, European Galileo and Russia's GLONASS are booming. Satellite compatibility and interoperability become the most popular issues nowadays. Along with China's Beidou satellite positioning and navigation system established, China has become the world's first three countries with independent intellectual property rights in global satellite positioning, showing the level of national science, technology and economic strength.The GNSS satellite IF signal collector is designed under such background and this paper will present a good solution for multi-constellation satellite signal collection. The paper has followed a multi-compatible, low-power, high performance and scalability of the design principles.This paper focuses on GNSS satellite IF signal collector hardware and software design and implementation. First, the paper introduced collector functional requirements and design specifications by chosen system architechture and transmition mode, and then carried out a detailed description of overall design and main modules functional design. Lastly, this paper gave detailed test methods and an effective improvement.Through the system debug, results show that the design has achieved the requirements of GNSS satellite signal collection and perform well.