基于降维Capon的相干信号二维DOA估计算法
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摘要
针对相干信号二维波达方向(DOA)估计运算量过大的问题,提出了基于降维Capon的相干信号二维DOA估计算法。该算法采用空间平滑和半实值降维Capon算法,相比常规二维Capon算法,计算量显著减小。仿真结果表明,该算法的估计性能与常规二维Capon算法和二维MUSIC算法基本相同。
In view of the problem that the computational complexity of 2-dimensional DOA estimation of coherent signals is too large,this paper proposed an algorithm based on reduced-dimension Capon.Spatial smoothing and semi-real-valued reduced-dimension Capon were used in the algorithm.Simulation results showed that this algorithm had similar estimation performance with traditional 2-dimensional Capon and 2-dimensional MUSIC,but It could significantly reduce computation complexity.
In view of the problem that the computational complexity of 2-dimensional DOA estimation of coherent signals is too large,this paper proposed an algorithm based on reduced-dimension Capon.Spatial smoothing and semi-real-valued reduced-dimension Capon were used in the algorithm.Simulation results showed that this algorithm had similar estimation performance with traditional 2-dimensional Capon and 2-dimensional MUSIC,but It could significantly reduce computation complexity.
引文
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[3]杨艳飞,高健,张兴敢.一种基于L型阵列的改进的二维DOA估计方法[J].南京大学学报(自然科学),2016,52(5):953-959.
[4]李杰然,许稼.共形阵列信号DOA和极化状态联合估计研究[J].雷达科学与技术,2015,13(2):159-163.
[5]曾文浩,朱晓华,李洪涛,等.一种稀疏阵列下的二维DOA估计方法[J].航空学报.2016,37(7):2269-2275.
[6]Schmidt R O.Multiple emitter location and signal parameter estimation[J].IEEE Trans.on Antennas and Propagation,1986,34(3):276-280.
[7]Zoltowski M D,Haardt M,Mathews C P.Closed-form2-D angle estimation with rectangular arrays in element space or beamspace via unitary ESPRIT[J].IEEE Transactions on Antennas And Propagations,1996,44(2):316-328.
[8]Liu T H,Mendel J.Azimuth and elevation direction finding using arbitary array geometries[J].IEEE Trans on SP,1998,46(7):2061-2065.
[9]Capon J.High-resolution frequency wavenumber spectrum analysis[J].Proceedings of the IEEE,1987,57(8):1408-1418.
[10]Zeng W J,So H C,Huang L.Robust direction of arrival estimator for impulsive noise environments[J].IEEE Trans.on Signal Processing,2013,61(17):4296-4308.
[11]He Z Q,Liu Q H,Jin L N.Low complexity method for DOA estimation using array covariance matrix sparse representation[J].Electronics Letters,2013,49(3):228-230.
[12]石要武,陈淼,单泽涛,等.基于特征空间MUSIC算法的相干信号波达方向空间平滑估计[J].吉林大学学报(工学版),2017,47(1):268-273.
[13]Kuang J,Zhou Y,Fei Z.Joint DOA and channel estimation with data detection based on 2Dunitary ESPRIT in massive MIMO systems[J].Frontiers of Information Technology&Electronic Engineering,2017,18(6):841-849.
[14]闫锋刚,王军,沈毅,等.基于半实值Capon的高效波达方向估计算法[J].电子与信息学报,2015,37(4):811-816.
[15]刘晓娣,周新力,肖金光.基于空间平滑的单快拍波达方向估计算法[J].探测与控制学报,2015,37(6):66-70.
[16]Golub G H,Loan C F.Matrixs computations[M].Margland:The John Hopkins University Press,1996.
[17]蔡晶晶,李鹏,赵国庆.RD-MUSIC的二维DOA估计方法[J].西安电子科技大学学报,2013,40(3):81-86.
[2]Y N,T K S.2-D unitary matrix pencil method for efficient direction of arrival estimation[J].Digital Signal Processing,2006,16(6):767-781.
[3]杨艳飞,高健,张兴敢.一种基于L型阵列的改进的二维DOA估计方法[J].南京大学学报(自然科学),2016,52(5):953-959.
[4]李杰然,许稼.共形阵列信号DOA和极化状态联合估计研究[J].雷达科学与技术,2015,13(2):159-163.
[5]曾文浩,朱晓华,李洪涛,等.一种稀疏阵列下的二维DOA估计方法[J].航空学报.2016,37(7):2269-2275.
[6]Schmidt R O.Multiple emitter location and signal parameter estimation[J].IEEE Trans.on Antennas and Propagation,1986,34(3):276-280.
[7]Zoltowski M D,Haardt M,Mathews C P.Closed-form2-D angle estimation with rectangular arrays in element space or beamspace via unitary ESPRIT[J].IEEE Transactions on Antennas And Propagations,1996,44(2):316-328.
[8]Liu T H,Mendel J.Azimuth and elevation direction finding using arbitary array geometries[J].IEEE Trans on SP,1998,46(7):2061-2065.
[9]Capon J.High-resolution frequency wavenumber spectrum analysis[J].Proceedings of the IEEE,1987,57(8):1408-1418.
[10]Zeng W J,So H C,Huang L.Robust direction of arrival estimator for impulsive noise environments[J].IEEE Trans.on Signal Processing,2013,61(17):4296-4308.
[11]He Z Q,Liu Q H,Jin L N.Low complexity method for DOA estimation using array covariance matrix sparse representation[J].Electronics Letters,2013,49(3):228-230.
[12]石要武,陈淼,单泽涛,等.基于特征空间MUSIC算法的相干信号波达方向空间平滑估计[J].吉林大学学报(工学版),2017,47(1):268-273.
[13]Kuang J,Zhou Y,Fei Z.Joint DOA and channel estimation with data detection based on 2Dunitary ESPRIT in massive MIMO systems[J].Frontiers of Information Technology&Electronic Engineering,2017,18(6):841-849.
[14]闫锋刚,王军,沈毅,等.基于半实值Capon的高效波达方向估计算法[J].电子与信息学报,2015,37(4):811-816.
[15]刘晓娣,周新力,肖金光.基于空间平滑的单快拍波达方向估计算法[J].探测与控制学报,2015,37(6):66-70.
[16]Golub G H,Loan C F.Matrixs computations[M].Margland:The John Hopkins University Press,1996.
[17]蔡晶晶,李鹏,赵国庆.RD-MUSIC的二维DOA估计方法[J].西安电子科技大学学报,2013,40(3):81-86.