CAJ | 학술논문

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.
위료제고도항계통항간우성능,설계일충기우다급유납려파기적도항신호항간우자괄응처리장치.해장치통과장신호축급투영도정교공간병려파,피면료전통유납려파기중조새구진적구해,대대강저료산법복잡도,인차가이충분이용공시연합려파방법진행항간우처리.기우Matlab방진,제출일충간단고효적경건실현방법.실험표명,해장치만족도항신호처리실시성적요구,대우래향변화교위완만적간우신호유착흔호적억제효과,병차리우채용FPGA등경건실현.
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.