摘要
提出了空间非平稳噪声环境下基于圆阵的DOA估计算法。针对噪声为空间非平稳的情况,通过有效估计的加性色噪声相关矩阵对阵列数据相关矩阵进行预白化处理,克服了空间非平稳噪声对空间谱估计的影响误差,进而实现了非平稳噪声环境下圆阵DOA的精确估计,计算机仿真结果证实了该算法的正确性和有效性。
This paper presents a new algorithm based on circular array under spatially nonstationary noise fields. An estimation of the colored noise covariance matrix is made, and then the received data for DOA estimation is prewhitened using the estimation noise covariance, thus overcoming the influence of nonstationary noise. The computer simulation confirms the validity and the accuracy of the algorithms.
出处
《电子科技》
2008年第2期76-78,共3页
Electronic Science and Technology
关键词
空间非平稳噪声
圆阵
DOA估计
spatially nonstationary noise
circular array
DOA estimation.
