Root—MUSIC，PM，MUSIC算法的比较

摘要

Root-MUSIC and PM which are aimed to reduce complexity of calculation have been discussed and compared with MUSIC in this article. Root-MUSIC algorithm reduces complexity of calculation by calculating polynomial roots,while PM algorithm by using matrix multiplication instead of eigen-decomposition. The simulation demonstrates, among the three algorithms, Root-MUSIC performs best in the case of a small amount of array elements;otherwise,PM will be better.%对测向算法（DOA）中的2种降低运算量的算法，即求根的MUSIC算法（R00t-MusIc）和传播算子算法（PM），与多重信号分集算法（MUSIC）进行比较，并对两者降低运算量的作用进行了有效性分析和验证．Root—MUSIC算法通过求根降低运算量，PM通过矩阵乘法代替矩阵分解降低运算量．仿真结果表明，在阵元数较少时Root—MUSIC是最有效的算法，否则PM算法更为有效．