摘要
介绍了卫星导航系统中使用的各种调制技术及其优缺点,从调制信号的各种特性以及仿真结果出发,说明在频谱资源相当紧张的情况下,可利用各种调制技术的优势互补,来提高频谱资源的利用率和系统的整体性能,指出了未来卫星导航系统中调制技术的发展方向。
The paper firstly introduces digital modulation technologies and their advantages and disadvantages used in GNSS. Based on power spectrum and autocorrelation function of the signal and simulation results, it shows that the complement of the advantages of various modulation technologies may increase the utilization of frequency band resource and improve the global performance. Finally, it points out the development trend of future global navigation satellite system.
出处
《电视技术》
北大核心
2006年第11期82-85,共4页
Video Engineering
基金
中欧伽利略计划资助项目(CGTR)
