高信噪比大指向误差环境中的波束形成

高勇; 肖先赐

高信噪比大指向误差环境中的波束形成

高勇,
肖先赐

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出版历程
- 收稿日期: 1999-06-11
- 修回日期: 1999-12-08
- 刊出日期: 2001-04-19

Beamforming in the Environments of High SNR and Large Steeriug Error

摘要

摘要: 基于协方差矩阵加权的波束形成方法(SMI)在计算加权向量时引进干扰和噪声的影响,投影方法在计算加权向量时引进干扰信号的影响,这些都造成了波束形成效果的不理想。在有用信号的信噪比较高且出现较大的指向误差时,SMI和投影方法失效。本文针对上述问题提出了利用信号周期平稳性,采用周期波束形成方法来解决上述问题。模拟实验验证了本文的方法。
- 波束形成; 周期平稳; SMI; 投影
Abstract: In the beamformer based on sample covariance matrix inverse (SMI) algorithm, the calculation of weight vector comprises the components of interferences and noise. The projection method comprises the components of interferences. It induces the imperfective results of the beamformer. Under the environments of high signal-to-noise ratio (SNR) and large steering error, SMI algorithm and the projection method are invalid. The cyclic beamformer of utilizing signal s cyclostationarity is proposed to resolve the problem above-mentioned. The simulation results verify the cyclic beamforming algorithm.

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参考文献(1)

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