阵列通道噪声不一致性校正方法

A calibration method of array noise mismatch

以提高阵列系统波束合成信噪比为目标,提出一种基于噪声测量的通道噪声不一致校正方法,建立了通道噪声不一致校正的系统模型。从理论上证明了经此方法校正的波束合成信噪比优于传统幅度校正方法,给出了噪声不一致校正的步骤。此方法无需额外信号输入,可瞬时校正带宽,实现简单。仿真结果表明了此方法的优越性。

To improve the beamforming SNR gain of array system, a channel noise calibration method is proposed. The system model of channel noise calibration is described, and that the SNR gain of using this method is higher than conventional method is proved in theory. The calibration steps are presented in details. The proposed method is no need of auxiliary signal resource and easy-to-implementation, and also its calibration bandwidth is wide. Simulations show the superior performance of this method.