摘要
GPS(全球定位导航系统)天线滤波和极化抗干扰技术,使得宽带阻塞式干扰的效能急剧下降。为了解决这个问题,提出了一种采用伪码瞄准式干扰方案。方案能够对GPS信号进行干扰,并且干扰性能得到提升。分析了伪码瞄准式干扰原理和评估标准,对GPS伪码瞄准式干扰机进行了设计,分别包括伪码干扰源模块设计和载波模块设计,并给出了个电路的原理和硬件实现。对GPS接收机的载噪比进行了测试,实验结果表明伪码瞄准式干扰,载噪比降低,具有干扰功率集中的优点。相比宽带阻塞式干扰,性能得到提升。
Global positioning system （GPS） antenna filtering and polarization interference technology makes the performance of broadband blocking interference decreased dramatically. To solve this problem, a pseudo code aiming jamming scheme is proposed which can interfere with the GPS signal, and the per- formance is improved. The pseudo code aiming jamming principle and evaluation standards are analyzed. GPS code aiming jamming machine is designed, including pseudo code and carrier interference source module design, as well as the realization principle and hardware circuit. The carrier to noise ratio of the GPS receiver is tested. Experimental results show that the pseudo code aiming jamming can effectively in- terfere with GPS and has the advantage of the interference power concentration. Compared to broadband blocking interference, the performance is enhanced.
出处
《现代防御技术》
北大核心
2017年第4期143-148,共6页
Modern Defence Technology
基金
国家自然科学基金项目(61273053)
武汉工商学院2016年度科研基金项目(A2016008)
关键词
压制性干扰
瞄准式干扰
GPS对抗
C/A码
相关干扰
卫星干扰
电子对抗
blanket jamming
spot jamming
GPS countermeasure
C/A code
correlated interference
satellite interference
electronic countermeasure
