摘要
TLS-ESPRIT改进算法对于方位角和仰角的估计精度,通过仿真实验业已证明,在不同信噪比情况下,要比TLS-ESPRIT算法更精确,其方差和均方根误差均小于TLS-ESPRIT算法,尤其在小信噪比的情况下,更能显示出改进算法的优势。然而,如果在子阵列相同的情况下,改进的TLS-ESPRIT算法和TLS-ESPRIT算法,哪一种算法将会更精确。本文利用Matlab系统仿真软件,通过仿真实验和深入的理论研究,分别对一维和二维M个阵元的原算法和M-1个阵元的改进算法进行性能比较,给出了不同信噪比情况下两种算法的波达方向的估计性能,指出了改进算法的不足,分析讨论了其理论依据。
That the improved TLS- ESPRIT algorithm is more accurate than the TLS- ESPRIT algorithm in DOA estimation such as azimuth and elevation estimation at different SNR has proved through experiments. The improved algorithm can show its superiority especially under the condition of the low SNR,its variance and root- mean- square are lower than that of the original algorithm.However,which is more superior of two algorithms when the number of sub array element is actually the same. This paper uses MATLAB to demonstrate the performance of the improved algorithm with M array and the original algorithm with M + 1 array to show the performance of the both at the different SNR cases under one- dimensional and two- dimensional array. And it also points out the deficiency of the improved algorithm and its theoretical basis is presented through analysis.
出处
《无线通信技术》
2015年第3期30-33,共4页
Wireless Communication Technology
