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中文摘要：
小快拍情况下采样协方差矩阵没有收敛，假设的白噪声表现为色噪声，从而导致了自适应波束形成畸变。本文从采样协方差矩阵特征值分析出发，提出了一种自适应对其修正的方法，相当于对采样协方差矩阵进行扰动，改善了采样协方差矩阵的收敛性，从而提高了波束形成的性能和稳健性。最后性能分析和计算机仿真验证了所提方法的有效性和优越性。
英文摘要：
In the situation of a few snapshots where the sampling covariance matrix doesn＇t converge, assumptive white noise will be thought as color noise, which accordingly causes the adaptive beamforming distortion. An adaptive modification method is presented in the paper based on analyzing eigenvalue of covariance matrix. It perturbs the sampling covariance matrix practically to quicken its convergence, which improves the performance and robustness of adaptive beamforming. Finally, the performance analysis and computer simulations have demonstrated the validity and superiority of the presented method.
同期刊论文项目
同项目期刊论文
Multitarget identification and localization using bistatic MIMO radar systems (vol 2008, art no 2834
Joint frequency ambiguity resolution and accurate timing estimation in OFDM systems with multipath f
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