【摘要】 针对对称α平稳(SαS)噪声环境中信号源的高分辨二维波达方向(DOA)估计问题,提出了一种新的联合对角化(JD)分数低阶矩(FLOM)-DOA矩阵方法。构建了一种特殊的阵列结构,把其分为三个子阵,然后通过联合对角化获得信号的二维角估计。新方法不仅保持原协变异DOA矩阵方法无需二维谱峰搜索和参数配对等优点,还较好地解决了一维角度兼并问题。仿真结果表明,新方法优于协变异DOA矩阵法。更多还原

【Abstract】 A novel joint diagonalization fractional lower order moment(FLOM) DOA matrix method is proposed to estimate the higher 2-D DOA of uncorrelated narrowband signals with high resolution in the presence of impulsive noise.The method constructs three subarrays by exploiting the special structure of the array,thereby obtains the two-dimensional(2-D) DOA of the array based on joint diagonalization directly with neither peak search nor pair matching.The new method can handle sources with common 1-D angles.Simulation results show that the proposed method yields better performance than the robust covariation DOA matrix method.更多还原