摘要
由于球面共形天线阵所具有的特殊性质,使得其利用经典MUSIC算法进行DOA估计时,导向矢量与噪声子空间不正交,算法性能受到较大影响。在考虑各阵元接收某信号强度不一致的同时,根据子阵内阵元相似度高这一特点,对基于子阵分割的有向阵元MUSIC算法在球面共形阵上进行了DOA估计仿真实验,结果表明:该方法应用于球面共形阵,可以快速准确地估计出多个信号的DOA。
Because of the special characters of spherical con_formal array, the steering vector and the noise subspace are not orthogonal, and the per- formance is influenced greatly when using MUSIC algorithm to estimate signal＇ s DOA of these arrays. The simulation and verification of directional ele- ments MUSIC algorithm based on subarray divided technique for spherical conformal array DOA estimate are done based on high similar characteristic in every subarray unit in consideration of the different strength of each signal for each array element. The simulation results show that the proposed scheme is used in spherical conformal array, multiple signals＇ DOA can be estimated accurately and efficiently.
出处
《电视技术》
北大核心
2014年第11期150-153,共4页
Video Engineering
基金
广西自然科学基金项目(2013GXNSFFA019004)
广西无线宽带通信与信号处理重点实验室主任基金项目(12107)
