南京航空航天大学学报（英文版）2025，Vol.42Issue(4)：497-508,12.DOI:10.16356/j.1005-1120.2025.04.006
可变投影阶数的自适应滤波算法在机载雷达中的自干扰对消应用
Variable Projection Order Adaptive Filtering Algorithm for Self-interference Cancellation in Airborne Radars
摘要
Abstract
The adaptive filtering algorithm with a fixed projection order is unable to adjust its performance in response to changes in the external environment of airborne radars.To overcome this limitation,a new approach is introduced,which is the variable projection order Ekblom norm-promoted adaptive algorithm(VPO-EPAA).The method begins by examining the mean squared deviation(MSD)of the EPAA,deriving a formula for its MSD.Next,it compares the MSD of EPAA at two different projection orders and selects the one that minimizes the MSD as the parameter for the current iteration.Furthermore,the algorithm's computational complexity is analyzed theoretically.Simulation results from system identification and self-interference cancellation show that the proposed algorithm performs exceptionally well in airborne radar signal self-interference cancellation,even under various noise intensities and types of interference.关键词
自适应滤波算法/机载雷达/可变投影阶数/均方偏差/自干扰对消Key words
adaptive filtering algorithm/airborne radar/variable projection order/mean squared deviation/self-interference cancellation分类
航空航天引用本文复制引用
李浩瑞,高颖,郭鑫宇,欧世峰..可变投影阶数的自适应滤波算法在机载雷达中的自干扰对消应用[J].南京航空航天大学学报（英文版）,2025,42(4):497-508,12.基金项目
This work was supported by the Shan-dong Provincial Natural Science Foundation(No.ZR2022MF314). （No.ZR2022MF314）
