A GNSS signal simulator, which is the first designed within China that is capable of simulating GPS, GLONASS and Beidoul signals with time and space synchronization by any mode combination, has been developed based on the "1PC+DSP+FPGA" architecture. Technologies such as satellite navigation, software radio, computer control and EMC have been applied in the development process. The hardware architecture of this simulator is introduced in specific. Summarization of its software composition and each module' s main functions are also given. Simulated signals have been verified by off-the-shelf GNSS receivers. This simulator will also be capable of Beidou2 signal simulation in the near future without hardware modification.%应用卫星导航、软件无线电、计算机控制、电磁兼容等技术,研制了基于“工控机+ DSP+ FPGA”架构的多模卫星信号模拟器；该模拟器在国内最先实现了 GPS、GLONASS和北斗一号信号的任意组合、时空同步仿真；详细论述了模拟器硬件方案,介绍了其软件构成和各模块功能,最后通过成熟商业多模接收机验证了模拟器所仿真信号的有效性和任意时空性；此外,该模拟器无需更改硬件即可在未来向北斗二号系统扩展.
展开▼
