基于相位匹配原理的稳健方位估计
A Robust Criterion for Direction of Arriving Estimation Based on Phase Matched Theory
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摘要: 文中介绍了一种新的信号方位估计原理--相位匹配原理(PMT),该原理计算简单、且不受噪声相关特性的影响。论文提出了一个新的基于矩阵范数的判别准则,该准则极大地改进了方位的估计精度和方差,并保持了算法计算简单的特点。仿真结果表明改进后的准则在高信噪比下接近MUSIC的估计性能,在低信噪比下却超过MUSIC估计,而且其估计性能不受未知相关噪声的影响。
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关键词:
- 相位匹配原理; 波达方向; 未知相关噪声
Abstract: A new method for Direction of Arriving (DOA) Estimation-Phase Matched Theory (PMT) is introduced, which computation complexity is simple and performance is unaffected by unknown correlated noise. Compared with energy criterion, a robust criterion based on SVD improves the bias and variance of estimation and the simplicity is still kept. Computer simulation shows that the criterions performance approximates MUSIC algorithm at high SNR and exceeds it at low SNR. Specially, this algorithm still has good performance under unknown correlated noise. -
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