摘要
在对称α稳定分布噪声的假设下,现有的基于共变和分数低阶矩的MUSIC(即ROC-MUSIC和FLOM-MUSIC)方法不能用于均匀圆阵信源相干情况下的波达方向(DOA)估计.为了解决这一问题,基于模式空间变换算法以及空间平滑算法的思想,结合ROC-MUSIC算法和FLOM-MUSIC算法,实现在冲击噪声背景下均匀圆阵相干信源的DOA估计.仿真实验验证了该方法的有效性.
Within the conditions of impulsive noise fields modeled as symmetric a-stable distribution, the existed robust covariation（ROC） based MUSIC and fractional lower moment（FLOM） based MUSIC can not be used to estimate the DOA under these conditions. This study is based on the idea of the mode space transformation algorithm and the spatial smoothing algorithm, and the DOA estimation of uniform circular array and coherent sources in an impulsive noise environment is realized. Its validity is confirmed by computer simulation.
出处
《应用科技》
CAS
2012年第1期35-38,共4页
Applied Science and Technology
基金
黑龙江省科技攻关计划基金资助项目(GZ08A101)
关键词
冲击噪声
模式空间变换
空间平滑
均匀圆阵
DOA估计
impulsive noise
mode space transformation
spatial smoothing
uniform circular army
DOA estimation
