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本文定义了一种时延分数阶相关函数和阵列输出信号的时延分数阶相关矩阵,在此基础上,提出了一种新的基于时延分数阶相关函数时空处理的了空间测向算法一时延分数阶相关MUSIC(TLFOC-MUSIC)算法。该算法在进行空域处理的同时,引入了时域处理,弥补了空域信息的不足,更充分地开发了空间信号中的有用信息,提高了算法的稳健性和测向的性能,对SαS噪声和干扰有较强的抑制作用。计算机仿真实验结果验证了该算法的有效性和稳健性。
In this paper, a delay-dependent fractional order correlation function and an array output signal delay fractional order correlation matrix are defined. Based on this, a new spatial direction finding algorithm based on time-delay fractional correlation function is proposed Delay fractional correlation MUSIC (TLFOC-MUSIC) algorithm. The algorithm introduces a time-domain process while airspace is processed, compensates for the shortage of airspace information, develops the useful information in the spatial signal more fully, improves the robustness of the algorithm and the performance of the direction finding, Interference has a strong inhibitory effect. Computer simulation results verify the effectiveness and robustness of the proposed algorithm.