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中文摘要：
基于低空测角模型，提出了一种基于四阶累积量的直达波方位估计算法。该算法首先采用Pro—VESPA算法估计出广义方向矩阵，再利用目标直达波信号和多径信号之间的仰角几何关系，不需已知多径信号的相干系数，对广义方向矩阵函数一维搜索就可直接精确获得直达波方位，算法适用于高斯白噪声或色噪声环境，具有较好的鲁棒性。计算机仿真验证了该算法的有效性。
英文摘要：
According to the model of low angle bearing, a new direct signal DOA estimation algorithm is proposed based on fourth-order cumulant. Firstly the generalized response vector estimation is got by the Pro- VESPA method. Secondly by using the elevation geometry relation of direct wave and multi-path signals, the accurate direct signal DOA estimation is acquired through one dimension function searching. Using the algo- rithm doesn＇t need to know the multi-path signal correlation coefficient. It can be applied in white gauss or color noise environment and is more robust. Computer simulation results prove the validity of this algorithm.
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Decoupled 2D direction of arrival estimation using compact uniform circular arrays in the presence o
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