摘要
针对高机动条件下卫星导航终端抗干扰能力差问题,提出一种应用于高动态载体低复杂度的自适应窄带干扰抑制器设计方法。该方法通过干扰功率和载体运动状态信息实时调整滤波的步长和平滑参数,使接收机能快快速稳定的形成零陷,抑制干扰信号。该方法结构简单、计算量小。仿真结果表明该方法不但能够快速收敛,并且具有较好的窄带干扰抑制性能,窄带干扰抑制性能指标优于55 dB,在卫星导航终端中具有应用价值。
In response to the poor anti-interference ability of satellite navigation terminals under high maneuvering conditions,this paper proposes a design method for adaptive narrowband interference suppressors applied to high dynamic carriers with low complexity,which solves the navigation and positioning problems of small navigation terminals in high dynamic interference environments.This method adjusts the step size and smoothing parameters of the filter in real-time through interference power and carrier motion status information,enabling the receiver to quickly and stably form nulls and suppress interference signals.This method is a practical narrowband interference suppression method for satellite navigation with simple structure,low computational complexity.The simulation results show that this method not only converges quickly,but also has good narrowband interference suppression performance.The narrowband interference suppression performance is better than 55 dB,and has good promotion and application value in satellite navigation terminals.
作者
范广伟
孟岩
刘阔
FAN Guangwei;MENG Yan;LIU Kuo(The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China;Hebei General Hospital,Shijiazhuang 050000,China)
出处
《兵器装备工程学报》
2024年第S2期262-265,共4页
Journal of Ordnance Equipment Engineering
关键词
卫星导航
干扰抑制
自适应步长自适应滤波
均方误差
satellite navigation
interference suppression
adaptive step size adaptive filtering
mean squared error
