西北工业大学学报
西北工業大學學報
서북공업대학학보
JOURNAL OF NORTHWESTERN POLYTECHNICAL UNIVERSITY
2013年
6期
997-1001
,共5页
刘宁%史浩山%郭淑霞%杨博
劉寧%史浩山%郭淑霞%楊博
류저%사호산%곽숙하%양박
运算法则%仿真计算%DOA%估计%数学模型%矩阵运算%均方根误差%蒙特卡洛%天线阵列%SNR%ESPRIT%修正%空间平滑%虚拟阵列
運算法則%倣真計算%DOA%估計%數學模型%矩陣運算%均方根誤差%矇特卡洛%天線陣列%SNR%ESPRIT%脩正%空間平滑%虛擬陣列
운산법칙%방진계산%DOA%고계%수학모형%구진운산%균방근오차%몽특잡락%천선진렬%SNR%ESPRIT%수정%공간평활%허의진렬
algorithms,computer simulation,direction of arrival,estimation,mathematical models,matrix alge-bra,mean square error,Monte Carlo methods,sensor arrays,signal to noise ratio%ESPRIT,modi-fied,spatial smoothing,virtual-array
提出一种基于虚拟阵列的相干信源 DOA估计方法。利用接收数据及其共轭信息，重新构造子阵数据矩阵，在不损失有效工作阵元情况下采用运算量小的修正 C-ESPRIT方法实现非圆信号在任意初始相位下的相干信号估计。仿真结果表明，VC-ESPRIT算法有效地消除信号初始相位对相干信号C-ESPRIT算法的影响，并且在低信噪比下性能明显优于前后向空间平滑 ESPRIT。
提齣一種基于虛擬陣列的相榦信源 DOA估計方法。利用接收數據及其共軛信息，重新構造子陣數據矩陣，在不損失有效工作陣元情況下採用運算量小的脩正 C-ESPRIT方法實現非圓信號在任意初始相位下的相榦信號估計。倣真結果錶明，VC-ESPRIT算法有效地消除信號初始相位對相榦信號C-ESPRIT算法的影響，併且在低信譟比下性能明顯優于前後嚮空間平滑 ESPRIT。
제출일충기우허의진렬적상간신원 DOA고계방법。이용접수수거급기공액신식，중신구조자진수거구진，재불손실유효공작진원정황하채용운산량소적수정 C-ESPRIT방법실현비원신호재임의초시상위하적상간신호고계。방진결과표명，VC-ESPRIT산법유효지소제신호초시상위대상간신호C-ESPRIT산법적영향，병차재저신조비하성능명현우우전후향공간평활 ESPRIT。
A method of DOA estimation based on virtual array is presented in the presence of coherent signals .U-sing the received dates and its conjugate information , we reconstructed array data matrix .Using the modified C-ES-PRIT, which has small amount of calculation , we estimated the non-circular coherent signal of arbitrary phase with-out array aperture reduction and effective element loss .The simulation results and their analysis show preliminarily that VC-ESPRIT eliminates the limitation of coherent source DOA estimation for C-ESPRIT algorithm and that its performance is better than forward-backward spatial smoothing ESPRIT .
