无相位测量的阵列天线故障诊断方法

      Fault diagnosis of array antenna with phaseless measurements

      • 摘要: 传统的阵列天线故障诊断方法要求测量数据同时具有幅度和相位信息,而相位测量通常花费较多,甚至技术上不可行。为了解决该问题,文中提出了一种无相位测量的阵列天线故障诊断方法。首先构造相位误差矩阵,并将其引入阵列天线正向模型,得到含有未知相位信息的信号模型;然后基于该信号模型,交替迭代求解相位误差矩阵和阵元激励,最终达到对阵列天线故障诊断的目的。数值仿真实验表明,本文所提方法在准确性、有效性和鲁棒性上都优于传统阵列天线故障诊断方法,具有广阔的应用前景。

         

        Abstract: Traditional array antenna fault diagnosis methods require measurement data with both amplitude and phase information, while phase measurement is usually expensive and technically infeasible. To address this issue, an array antenna fault diagnosis method with phaseless measurements is proposed in the paper. The proposed method first constructs a phase error matrix and introduces it into the forward model of the array antenna, thereby, obtaining a signal model with unknown phase information; based on this signal model, the phase error matrix and array element excitations are iteratively solved, ultimately achieving the goal of diagnosing faulty elements of the array antenna. Numerical simulations demonstrate that the proposed method is superior to traditional array antenna fault diagnosis methods in terms of accuracy, effectiveness and robustness. The proposed method has important application prospects.

         

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