现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
7期
64-67,70
,共5页
MVDR%导向矢量%采样协方差矩阵%零陷展宽%对角载入%载入因子
MVDR%導嚮矢量%採樣協方差矩陣%零陷展寬%對角載入%載入因子
MVDR%도향시량%채양협방차구진%령함전관%대각재입%재입인자
MVDR%steering vector%sample covariance matrix%null broadening%diagonal loading loading factor
提出了零陷展宽对角载入算法,该算法既解决了干扰在快速运动时,干扰零陷过窄的问题,又解决了协方差矩阵误差和导向矢量误差存在时,算法稳定性变差的问题。同时,通过对角载入因子和采样协方差矩阵间的关系确定了对角载入算法载入因子的值。计算机仿真结果表明该算法有很好的稳健性,以及较宽的零陷。
提齣瞭零陷展寬對角載入算法,該算法既解決瞭榦擾在快速運動時,榦擾零陷過窄的問題,又解決瞭協方差矩陣誤差和導嚮矢量誤差存在時,算法穩定性變差的問題。同時,通過對角載入因子和採樣協方差矩陣間的關繫確定瞭對角載入算法載入因子的值。計算機倣真結果錶明該算法有很好的穩健性,以及較寬的零陷。
제출료령함전관대각재입산법,해산법기해결료간우재쾌속운동시,간우령함과착적문제,우해결료협방차구진오차화도향시량오차존재시,산법은정성변차적문제。동시,통과대각재입인자화채양협방차구진간적관계학정료대각재입산법재입인자적치。계산궤방진결과표명해산법유흔호적은건성,이급교관적령함。
The null broadening and diagonal loading algorithm is proposed,which not only addresses the problem of narrow nulls as the interference in the fast movement condition,but also solves the problem of the bad algorithm stability as the error covariance matrix and steering vector errors existing. Meanwhile,diagonal loading factor values of the algorithm are determined based on the relationship between sample covariance matrix and diagonal loading factor. The computer simulation results show that the algorithm has good robustness,as well as broadening nulls.