摘要
天线阵平面波的DOA估计在通信系统中有重要的应用价值,是无线定位算法中的主要研究内容。通过分析传统MUSIC算法和改进求根MUSIC算法的基本原理,针对其运算量较高,受噪声影响较大的因素,提出将求根运算方法应用于最小范数算法的方法,形成改进的根植最小范数算法。针对6阵元天线阵进行仿真实验表明,在相同的噪声条件下根植最小范数算法能够精确地分析出到达角为4°、8°入射信号,同时减少了计算量,提高了定位精度。
The DOA estimation of plane wave antenna array has important application value in the communication system,which is the main contents of mobile phone locating algorithm.In order to remove the affection of noise characteristics and reduce the amount of computation,this paper puts forward a method of applying the root operation to the minimum norm algorithm to form the improved rooted minimum norm algorithm after analyzing the principles of traditional MUSIC algorithm and improved Root-MUSIC algorithm. Simulation experiments for six-element element antenna array show that the rooted minimum norm algorithm can accurately analyze the incident signals with arrival angle of 4° or 8° at the same noise conditions,while reducing the amount of computation and improving the positio-ning accuracy.
出处
《无线电工程》
2014年第4期23-27,共5页
Radio Engineering
基金
河北省高等学校科学技术研究重点基金项目(ZD20131043)
