现代导航
現代導航
현대도항
MODERN NAVIGATION
2013年
4期
298-302
,共5页
鲁祖坤%高鹰%石宇%王更
魯祖坤%高鷹%石宇%王更
로조곤%고응%석우%왕경
幅相误差%自校正%多重信号分类法%迭代法%波达方向估计
幅相誤差%自校正%多重信號分類法%迭代法%波達方嚮估計
폭상오차%자교정%다중신호분류법%질대법%파체방향고계
Amplitude Phase Error%Self Correction%Multiple Signal Classification (MUSIC) Algorithm%Iterative Method%Direction Of Arrival (DOA) Estimation
针对实际应用中普遍存在的阵列幅相误差扰动问题,结合子空间类波达方向估计算法,提出了一种幅相误差的自校正算法。先利用均匀线阵协方差矩阵的结构特点对幅相误差进行初步校正,再通过迭代方法得到更精确的估计值,自校正方法无需任何参数初始值,实现比较简单。仿真实验验证了算法具有良好的误差校正效果,能够比较准确的估计出方位角和幅相误差值。
針對實際應用中普遍存在的陣列幅相誤差擾動問題,結閤子空間類波達方嚮估計算法,提齣瞭一種幅相誤差的自校正算法。先利用均勻線陣協方差矩陣的結構特點對幅相誤差進行初步校正,再通過迭代方法得到更精確的估計值,自校正方法無需任何參數初始值,實現比較簡單。倣真實驗驗證瞭算法具有良好的誤差校正效果,能夠比較準確的估計齣方位角和幅相誤差值。
침대실제응용중보편존재적진렬폭상오차우동문제,결합자공간류파체방향고계산법,제출료일충폭상오차적자교정산법。선이용균균선진협방차구진적결구특점대폭상오차진행초보교정,재통과질대방법득도경정학적고계치,자교정방법무수임하삼수초시치,실현비교간단。방진실험험증료산법구유량호적오차교정효과,능구비교준학적고계출방위각화폭상오차치。
Aiming at the array amplitude phase errors perturbation problem widespread in practical application ,a self-calibration algorithm which combines with subspace DOA estimation algorithm for amplitude phase error is presented in this paper. Firstly, the amplitude phase error is preliminary calibrated using the structural characteristics of equality linear array covariance matrix. Then the more accurate estimation is gained through the iterative method. Self-calibration method doesn't need any initial parameter and easy to realize. The simulation shows that the algorithm has good effect on error calibration and can accurately estimate the azimuth and the value of the amplitude phase error.