X射线脉冲星导航仿真系统硬件设计
发布时间：2019-02-11 15:45
【摘要】：脉冲星是一类自转周期非常稳定的中子星,其最显著的特性是所辐射信号的周期均匀性,这一特性使其在计时、导航等领域展现出巨大的应用前景。因此基于X射线脉冲星的导航定位发展成为一种新的自主天文导航技术。 本文实现了一种X射线脉冲星导航仿真系统,该系统由脉冲星信号模拟器和脉冲星信号接收机两部分组成,系统采用通用串行接口(Universal Serial Bus)作为通信接口,极大的提高了系统整体的传输速率和灵活性。同时,采用AD硬件电路和DA硬件电路分别实现脉冲星信号的模数转换和数模转换,最后采用基于FPGA的硬件电路方法实现系统的控制以及算法的实现,使系统在实时性,灵活性和性价比等方面优于采用其他处理器所实现的系统。仿真及实验测试结果表明,该仿真系统可以满足X射线脉冲星导航定位算法的实现,达到了设计要求。
[Abstract]:Pulsars are a kind of neutron stars whose rotation period is very stable. The most remarkable characteristic of pulsars is the periodicity of the radiated signals, which makes pulsars have great application prospects in the fields of timing, navigation and so on. Therefore, X-ray pulsar based navigation and positioning has become a new autonomous astronomical navigation technology. In this paper, an X-ray pulsar navigation simulation system is implemented. The system is composed of pulsar signal simulator and pulsar signal receiver. The system adopts universal serial interface (Universal Serial Bus) as the communication interface. Greatly improve the overall transmission rate and flexibility of the system. At the same time, the AD hardware circuit and the DA hardware circuit are used to realize the signal conversion of the pulsar signal respectively. Finally, the hardware circuit method based on FPGA is used to realize the control of the system and the realization of the algorithm, which makes the system real-time. Flexibility and cost-to-performance ratio are superior to systems implemented using other processors. The simulation and experimental results show that the simulation system can meet the requirements of X-ray pulsar navigation and positioning algorithm.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：P145.6
本文编号：2419873
[Abstract]:Pulsars are a kind of neutron stars whose rotation period is very stable. The most remarkable characteristic of pulsars is the periodicity of the radiated signals, which makes pulsars have great application prospects in the fields of timing, navigation and so on. Therefore, X-ray pulsar based navigation and positioning has become a new autonomous astronomical navigation technology. In this paper, an X-ray pulsar navigation simulation system is implemented. The system is composed of pulsar signal simulator and pulsar signal receiver. The system adopts universal serial interface (Universal Serial Bus) as the communication interface. Greatly improve the overall transmission rate and flexibility of the system. At the same time, the AD hardware circuit and the DA hardware circuit are used to realize the signal conversion of the pulsar signal respectively. Finally, the hardware circuit method based on FPGA is used to realize the control of the system and the realization of the algorithm, which makes the system real-time. Flexibility and cost-to-performance ratio are superior to systems implemented using other processors. The simulation and experimental results show that the simulation system can meet the requirements of X-ray pulsar navigation and positioning algorithm.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：P145.6
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