A method of direction of arrival (DOA) and direction of departure (DOD) angle estimation based on polynomial rooting for bistatic multiple-input multiple-output (MIMO) radar with uniform circular array (UCA) configuration is proposed in this paper. The steering vector of the UCA is firstly transformed into a steering vector with a Vandermonde structure by using the Jacobi-Anger expansion. Then the null-spectrum function of the MIMO radar can be written as an expression in which the transmit and receive steering vectors are decoupled. Finally, a two-step polynomial rooting is used to estimate DOA and DOD of targets instead of two-dimensional multiple signal classification (MUSIC) search method for bistatic UCA MIMO radar. The angle estimation performance of the proposed method is similar to that of the MUSIC spectral search method, but the computation burden of the proposed polynomial rooting algorithm is much lower than that of the conventional MUSIC method. The simulation results of the proposed algorithm are presented and the performances are investigated and analyzed.
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机译:本文提出了一种基于对双面生根的多项式生根的到达方向(DOA)和出发方向(DOD)角度估计,并在本文中提出了具有均匀圆形阵列(UCA)配置的多项式生根。首先通过使用雅各的愤怒扩张,首先将UCA的转向载体与Vandermonde结构的转向载体转换成转向载体。然后可以将MIMO雷达的空光谱函数写入其中发射和接收转向矢量的表达式被写入。最后,使用两步多项式生根来估计对目标的DOA和DOD而不是对BISTATIC UCA MIMO雷达的二维多信号分类(音乐)搜索方法。所提出的方法的角度估计性能类似于音乐谱搜索方法的角度估计性能,但是所提出的多项式生根算法的计算负担远低于传统音乐方法的计算负担。提出了该算法的仿真结果,并研究了性能和分析。
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