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.%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.
展开▼
