摘要
传统的ISM算法在对宽带非相干信号进行DOA估计时,会存在计算量大,低信噪比下估计性能较差的问题,在ISM算法的基础上,提出了一种Root-ISM算法,该算法不仅能有效降低计算量,而且在DOA估计的性能上也优于传统的ISM算法。文中还针对这一新算法结合已有的两种算法做出了改进。仿真实验验证了改进后的算法能进一步改善DOA估计的性能。
A new algorithm called ＇ Root-ISM algorithm＇ is proposed in this paper based on the ISM algorithm for the large amount of calculation and poor performance of the traditional ISM algorithm in condition of low SNR in wideband incoherent signal DOA estimation. The algorithm not only effectively reduces the amount of calculation, but also achieves a better performance of DOA estimation than the traditional ISM algorithm. The new algorithm is improved by combining two existing algorithms. The simulation has verified that the improved algorithms based on Root-ISM algorithm can further improve the performance of DOA estimation.
出处
《电子科技》
2015年第6期38-40,44,共4页
Electronic Science and Technology
