自适应DBF中采样快拍数对系统输出SINR影响
Effect of the number of snapshots on the SINR of adaptive DBF system
在自适应数字波束合成（DBF）中，通常都会需要对协方差矩阵进行估计，而估计该矩阵时所产生的误差，取决于所使用的快拍数，进而，快拍数影响了系统的输出信干噪比（SINR）。文章通过理论分析和仿真，分析了快拍数大小同系统输出SINR关系。分析结论对于系统设计中快拍数确定具有重要意义。
In the most algorithms of adaptive DBF, we need to estimate the covariance matrix. The number of the snapshots used to estimate the covariance matrix , which decides the error, effects the SINR of the system. Through the analysis and simulating, the relation of the them is given, which is important for the system designer to take the right number of snapshots.
杨士中、刘玲、曾浩
通信无线通信电子对抗
协方差矩阵，波束合成，快拍数，信干噪比
covariance matrix，beam forming，the number of snapshots，signal-to-interference and noise ratio
杨士中,刘玲,曾浩.自适应DBF中采样快拍数对系统输出SINR影响[EB/OL].(2005-12-02)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/200512-45.点此复制
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