【摘要】 针对目前卫星导航接收机通常需要依赖FPGA芯片或ASIC芯片,功能扩展升级困难的问题,提出了基于独立DSP芯片的模块化卫星导航接收机平台的构建方法,并研究了中频卫星信号的实时采集、程序和数据的分配与存储、线程调度管理技术。在此基础上,以TI公司的TMS320C6416芯片为实例,设计实现了实时软件接收机样机。实验结果表明,依照该方案设计的平台能够很好地实现实时卫星导航软件接收机的功能。更多还原

【Abstract】 Aiming at the problems in function extension and upgrade of the satellite navigation receivers being used at present,which usually depend on FPGA chips or ASIC chips,the construction method of modular satellite navigation receiver based on a standalone DSP is presented,the IF satellite signal sampling,allocation and caching of the program and data,thread scheduling are also studied.Take TI’s TMS320C6416 as an example,a prototype of real-time software defined radio(SDR) satellite navigation receiver is implemented on this basis.The experimental results show that the receiver platform implemented in this scheme could realize the functions of the real-time SDR satellite navigation receiver very well.更多还原