摘要
针对色噪声下多重信号分类(Mutiple Signal Classification,MUSIC)算法方位估计的不准确问题,提出一种预处理修正的全加权MUSIC算法。该算法利用估计的噪声相关矩阵对圆阵接收数据进行预处理后即可消除色噪声对方位估计的影响,然后应用修正的全加权MUSIC算法,在不需要知道信源数目的条件下就可实现目标的准确估计。仿真结果证实该方法有效。
A novel algorithm that can eliminate the influence of colored noise based on the uniform circular array is presented.First,an estimation noise covariance matrix is employed to preprocess the received data of the array for DOA（Direction Of Arrival） estimation,thus,the influence of colored noise can be cleared up.Then,without knowing the number of signals,a nicety estimation of the object can be acquired with the modified MUSIC algorithm.Computer simulation shows that the proposed algorithm works in validity and accuracy.
出处
《西安邮电学院学报》
2011年第1期26-28,39,共4页
Journal of Xi'an Institute of Posts and Telecommunications
关键词
色噪声
均匀圆阵
方位估计
colored noise
uniform circular array
DOA estimation
