基于相位编码MIMO引信的RC-ROOT-MUSIC DOA估计算法
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摘要
提出了一种应用于相位编码体制MIMO引信波达方向(DOA)估计的降维多项式求根多重信号分类算法(RC-ROOT-MUSIC)。利用接收信号数据的冗余,借助降维变换矩阵降低快拍数需求以及协方差矩阵计算的复杂度。为了进一步减小计算复杂度,考虑谱峰搜索引起的计算复杂度,对经过RC-MUSIC算法的空间谱函数进行多项式求根,得到空间谱函数的极值点,而目标DOA由所有极值点集决定。仿真结果证明该多项式求根降维MUSIC算法(RC-ROOT-MUSIC)算法能精确地测量波达方向并且大幅度地减小计算复杂度。
A direction of the arrival(DOA)estimation method utilizing reduced-dimensional-polynomial-rooting MUSIC algorithm is developed for MIMO fuse based on phase-coded. Utilizing the redundancy of the received data, a reduced-dimensional matrix is used for alleviating the snapshots and the computational burden of the covariance matrix. To further alleviate the complexity burden,considering the complexity burden caused by spectral peak searching,a polynomial rooting method is utilized in space spectrum searches after the RC-MUSIC process. The set of all extreme values can be obtained by the algorithm above,and the target DOA lies in these extreme values. The simulation results show that DOA can be measured precisely and the computational burden can be reduced by utilizing RC-ROOT-MUSIC algorithm.
A direction of the arrival(DOA)estimation method utilizing reduced-dimensional-polynomial-rooting MUSIC algorithm is developed for MIMO fuse based on phase-coded. Utilizing the redundancy of the received data, a reduced-dimensional matrix is used for alleviating the snapshots and the computational burden of the covariance matrix. To further alleviate the complexity burden,considering the complexity burden caused by spectral peak searching,a polynomial rooting method is utilized in space spectrum searches after the RC-MUSIC process. The set of all extreme values can be obtained by the algorithm above,and the target DOA lies in these extreme values. The simulation results show that DOA can be measured precisely and the computational burden can be reduced by utilizing RC-ROOT-MUSIC algorithm.
引文
[1]张小飞,张弓,李建峰.MIMO雷达目标定位[M]Zhang Xiaofei,Zhang Gong,Li Jianfeng.MIMO Radar target location[M].
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[6]徐青,廖桂生,张娟,等.一种MIMO雷达幅相误差估计方法[J].航空学报,2011,39(3):596-601.Xu Qing,Liao Guisheng,Zhang Juan.A method for estimating amplitude and phase errors of MIMOradar[J].Journal of Aeronautics,2011,39(3):596-601.
[7]刘晓莉,廖桂生.双基地MIMO雷达多目标定位及幅相误差估计[J].电子学报,2011,39(3):596-601.Liu Xiaoli,Liao Guisheng.Multi target localization and amplitude phase error estimation of bistatic MIMOradar[J].Journal of Electronics.2011,39(3):596-601.
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[2]丁卫安,马远良.虚拟阵列变换法解相干信号MUSIC算法研究[J].微波学报,2008,24(2):27-30Ding Weian,Ma Yuanliang.Using MUSIC algorithm to estimate the DOA of coherent source via virtual array transformation.Journal of microwaves,2008,24(2):27-30
[3]IM Amine,B Seddik.2-D DOA estimation using MUSIC algorithm with uniform cicular array[J].IEEE,International Colloquium on Information Science&Technology.2017
[4]B.sun.MUSIC Based on Uniform Circular Array and its Direction Finding Efficiency.Inte.J.Sign.Proce.Syst,Vol1,pp.273-277,2013.
[5]I.Bekkerman,J.Tabrikian,Target detection and localization using MIMO radars and sonars[J].IEEE,Transaction Signal Processing 54(10)(2006):3873-3883.
[6]徐青,廖桂生,张娟,等.一种MIMO雷达幅相误差估计方法[J].航空学报,2011,39(3):596-601.Xu Qing,Liao Guisheng,Zhang Juan.A method for estimating amplitude and phase errors of MIMOradar[J].Journal of Aeronautics,2011,39(3):596-601.
[7]刘晓莉,廖桂生.双基地MIMO雷达多目标定位及幅相误差估计[J].电子学报,2011,39(3):596-601.Liu Xiaoli,Liao Guisheng.Multi target localization and amplitude phase error estimation of bistatic MIMOradar[J].Journal of Electronics.2011,39(3):596-601.
[8]Mrudula V Athi,Seyed A.Zekavat.Real-time root-MUSICDOA estimation via a parallel polynomial rooting method[C].PIMRC,2014 IEEE25thAnnual International Symposium on,Washington,DC,USA