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Transmit and Receive Array Structure Design of Two-Dimensional hybrid Phased-MIMO Radar based on Nested Array

机译:基于嵌套阵列的二维混合相控MIMO雷达收发阵列结构设计

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In order to reduce the loss of Degree of Freedom (DOF) brought by the transmit subarray splitting of two-dimensional hybrid phased-MIMO radar, this paper presents a design method of transmitting and receiving array based on nested array structure. Firstly, a two-dimensional hybrid phased-MIMO radar transmitting array based on one-dimensional nested array is presented. On this basis, the receiving end is set as a nested array, and finally a virtual array and difference coarray are formed to expand the number of virtual array elements. The expansion increases the DOF of arrays while preserving the advantages of hybrid phased-MIMO radars. Simulation experiments show that compared with the traditional and coprime hybrid phased-MIMO radar, the proposed method can effectively improve the array DOF and Direction-of-Arrival (DOA) estimation accuracy.
机译:为了减少二维混合相控MIMO雷达发射子阵列分裂带来的自由度损失,提出了一种基于嵌套阵列结构的发射和接收阵列设计方法。首先,提出了一种基于一维嵌套阵列的二维混合相控MIMO雷达发射阵列。在此基础上,将接收端设置为嵌套数组,最后形成虚拟数组和差分协同数组以扩展虚拟数组元素的数量。扩展增加了阵列的自由度,同时保留了混合相位MIMO雷达的优势。仿真实验表明,与传统的和互质的混合相MIMO雷达相比,该方法可以有效地提高阵列自由度和到达方向估计精度。

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