基于TOFS的宽带信号波束空间DOA估计OA
TOFS-based Beam Space Wideband DOA Estimator
频域子空间正交性测试(TOFS)方法是宽带信号DOA估计的一类重要算法。TOFS无需进行聚焦,避免了角度的预估计,在中等信噪比时性能较优,但该方法信噪比门限较高。文中利用均匀线阵模型,将波束空间方法应用于TOFS算法,在降低分辨信噪比门限的同时减少了TOFS算法的运算复杂度。通过仿真验证了新方法性能优于TOFS算法。
Test of orthogonality of frequency subspace (TOFS) is an important method for wideband signal di- rection-of-arrival (DOA) estimation. Since TOFS avoids focusing operation and preliminary DOA estimation, its performance is better than other methods in middle signal-to-noise ratio (SNR) ranges. However, the SNR resolu- tion threshold for TOFS is higher than others. An improvement based on beam space method is proposed to reduce the SNR threshold and computati…查看全部>>
谢坚;陈莹莹
西安电子科技大学电子工程学院,陕西西安710071西安电子科技大学电子工程学院,陕西西安710071
信息技术与安全科学
TOFS波束空间DOA估计
TOFSbeam spaceDOA estimation
《电子科技》 2012 (6)
60-63,74,5
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