国防科技大学学报2017，Vol.39Issue(3)：47-51,5.DOI:10.11887/j.cn.201703008
应用于卫星导航功率倒置阵的改进最小均方算法
Improved least mean square algorithm for power-inversion global navigation satellite system antenna array
摘要
Abstract
The power-inversion adaptive array is very suitable for situations where the desired signals are very weak while the interfering signals are much stronger,thus,it is widely used in the global navigation satellite system.For least mean square based on power-inversion adaptive array which is used in global navigation satellite system receivers,the convergence rate was very slow when sudden change in interference number or interference power occurs.The performance of receiving the satellite signals would be degraded.The cause of this phenomenon was analyzed.Then,an improved least mean square algorithm was proposed to solve this problem.The key novelty of the proposed method was that it monitors the power of the reference antenna output to detect any sudden change in interference number or interference power.Once the interference number or interference power decreases suddenly,the weight vector would be initialized again to improve the rate of convergence.Simulation results show that the improved method outperforms the original algorithm in rate of convergence.关键词
卫星导航/功率倒置/天线阵/抗干扰/最小均方Key words
satellite navigation/power-inversion/antenna array/anti-jamming/least mean square分类
信息技术与安全科学引用本文复制引用
陈飞强,聂俊伟,倪少杰,王飞雪..应用于卫星导航功率倒置阵的改进最小均方算法[J].国防科技大学学报,2017,39(3):47-51,5.基金项目
国家自然科学基金资助项目(61371158,61071140) （61371158,61071140）
