摘要
为了提高导航系统抗干扰性能,设计一种基于多级维纳滤波器的导航信号抗干扰自适应处理装置。该装置通过将信号逐级投影到正交空间并滤波,避免了传统维纳滤波器中阻塞矩阵的求解,大大降低了算法复杂度,因此可以充分利用空时联合滤波方法进行抗干扰处理。基于Matlab仿真,提出一种简单高效的硬件实现方法。实验表明,该装置满足导航信号处理实时性的要求,对于来向变化较为缓慢的干扰信号有着很好的抑制效果,并且利于采用FPGA等硬件实现。
To improve the anti-jamming performance of the navigation system, a multi-stage Wiener filter based adaptive processing device for anti-jamming of navigation signal was designed, in which the signal is projected to the orthogonal space step-by-step and filtered, which can avoid the solution of blocking matrix in traditional Wiener filter, and reduce the complexity of the algorithm. The device can make the best of space-time joint filtering method to conduct anti-jamming processing. Based on Matlab simulation, a simple and high efficient hardware implementation method for navigation anti-jamming system is proposed. The device can satisfy the real-time processing requirement of navigation signal, and has good suppression effect on the interfer- ence signal of slow changing. The device is beneficial to hardware implementation with FPGA.
出处
《现代电子技术》
北大核心
2015年第22期1-3,7,共4页
Modern Electronics Technique
基金
科技部科技伙伴计划资助
国家自然科学基金创新研究群体(61321061)
