GPS用户机抗射频干扰研究

Study of Anti-jamming Capability of GPS Users

通过GPS系统下行信号易损性分析,研究了GPS用户机抗射频干扰的必要性;通过射频干扰类型分析,研究了射频干扰对GPS用户机性能的影响;通过通用GPS数字用户机结构和自适应滤波技术分析,研究了抗干扰技术与用户应用平台的关系。提出卫星导航用户机抗射频干扰研究的最终目标是提高用户机的干扰容限,从而保持卫星导航系统的坚固性。

The paper studies the necessity of anti-RF interference by analyzing the weakness of GPS down-link signals, and the effect of RF interference by analyzing the difference between RF interference styles, and the relationship between anti-jamming techniques and application platforms by analyzing the structure of universal GPS digital user equipment and speeial adaptive filtering teehniques. It puts forward that the ultimate objective of the study is to improve the interference tolerance of satellite navigation user equipment and the solidness of satellite navigation system. It is useful for the further study on anti-jamming capability of the satellite navigation users.