天线组阵中基于SUMPLE算法的故障天线分析

在大规模天线组阵中，故障天线所引入的噪声会增加阵列的合成输出损失，而在低信噪比下难以用信号检测算法判断组阵天线是否存在故障。针对该问题，在分析故障天线对信号合成影响的基础上，本文提出一种基于SUMPLE算法的权值幅度修正方法实现天线增益分析，并分析了修正因子对降低故障天线影响的有效性。理论分析与仿真结果表明，权值幅度修正算法能明显降低故障天线的权值幅度，减少了合成增益损失，有利于在大规模天线组阵中故障天线的检测，具有重要的工程应用价值。

Analysis on Failed Antenna Based on SUMPLE Algorithm in Antenna Array

The signal detection algorithm will fail to decide whether broken\|down antennas exist in low SNR condition in a large scale antenna array, where the failed antenna could result in a higher resultant gain loss. A modified weight amplitude SUMPLE algorithm is proposed to derive the antenna gain, and the validity of modified factor for reducing the adverse effect from the failed antenna is also analyzed. Theoretical analysis and simulation results show that the modified algorithm can obviously reduce the weight amplitude of the failed antenna easity to be affirmed, and can improve the combining performance of antenna array. Therefore, it is a strong candidate for practical application in the large antenna array.