基于四阶循环累积量的DOA估计方法Direction of Arrival Estimation Using Fourth Order Cyclic Cumulation
嵇建波,陈磊,魏丽娜
摘要(Abstract)：
提出了一种新的波达方向估计算法,该算法构造了一个“谱相关DOA矩阵”,并基于此矩阵进行DOA估计。理论分析表明,通过谱相关矩阵的特征值分解,就可以得到源信号的DOA,该方法不需要进行谱峰搜索,同时利用循环平稳特性,可以有效抑制平稳噪声和滤除与信号循环频率不同的干扰信号,从而大大提高了算法的检测能力。另外还给出了相干信号DOA解决方法。
关键词(KeyWords)： 波达方向;循环平稳;智能天线;谱相关DOA矩阵
基金项目(Foundation):
作者(Author): 嵇建波,陈磊,魏丽娜
参考文献(References)：
- [1]Xugh Kailatht.Direction of Arrival Esti mation via Exploita-tion of Cyclostationarity a Combination of Temporal and Spatial Processing[J].IEEE Trans.Signal Processing,1992,40(7):17751786.
- [2]Gardner W A.Si mplification of MUSIC and ESPRIT by Exploitation of Cyclostationarity[J].Proc IEEE,1991.845847.
- [3]Shan T J,Wax M,Kailath T.Spatial Smoothing Approach for Location Esti mation of Coherent Signals[J].IEEE Trans.ASSP,1985,33(8):876881.
- [4]Du W,Kirlin R L.I mproved Spatial Smoothing Techniques for Coherent Signals[J].IEEE Trans.ASSP,1991,39(5):12081210.
- [5]Shamsunder S,Giannakis G.Signal Selective Location of Non Gaussian Cyclostationary Sources[J].IEEE Trans.on Signal Processing,1994,42(10):28602864.
- [6]Spooner C M,Gardner W A.The Cumulant Theory of Cy-clostationary Ti me Series,Part II:Development and Appli-cation[J].IEEE Trans.on Singal Processing,1994,42(12):34093429.
- [7]Yin Qinye,Newcomb R W,Zou Lihe.Esi mating2Dangles via Two Parallel Linear Arrays[C].Proc.of IEEEICASSP,1989,(4):28032806.
- [8]金梁.基于时空特征结构的阵列信号处理与智能天线研究[D].西安:西安交通大学,1999.
- [9]Dandawate A V,Giannakis G B.Asymptotic Theory of Mixed Ti me Averages and Kth-order Cyclic Moment and Cumulant statistics,IEEE[M].Trans.On information theory,1994,41:216232.