摘要
在自适应波束形成中，由于采样快拍数有限，导致协方差矩阵的估计误差，由此得到的自适应波束旁瓣很高。对角加载方法是一种改善波束性能的有效方法。文章介绍了对角加载的原理，给出了一种对角加载值的确定方法和仿真效果。该方法能根据采样数据自适应调整对角加载的数值，实现容易，能得到很好的旁瓣特性。
In adaptive beamforming,finite snapshot will lead to the prediction error of covariance matrix, and the beam sidelobe will be increased. Diagonal loading is an effective method to improve the performance of adaptive beam. The theory of diagonal loading is introduced and the way to choose the value of diagonal loading is put forward. The method used in this paper can adjust the value adaptively according to the samphng data, and has excellent performance.
出处
《通信对抗》
2006年第2期14-17,共4页
Communication Countermeasures
