ABSTRACT We present techniques for solving the problem of detecting element failures in phased array antennas by using a combination of a single fixed probe and an optimization of element excitations using principles derived from compressive sensing. This departs significantly from conventional techniques where the excitations are held constant and probes are instead moved spatially to collect measurements. Doing so helps us to accomplish two objectives with regards to successful fault diagnosis. First, we achieve a reduction in the number of measurements required compared to the state of the art; this reduction is particularly significant in the case of high-noise measurements where existing methods fail. Second, our techniques solve the problem of fault diagnosis in the case of real valued measurements (i.e. intensity measurement along with phase detection instead of phase measurement), which leads to simpler measurement hardware. We use nonconvex optimization algorithms to generate numerical results in support of our conclusions.

中文翻译：

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相控阵故障诊断的单元励磁优化

摘要 我们提出了解决相控阵天线中元件故障检测问题的技术，该技术结合使用单个固定探头和使用源自压缩传感的原理优化元件激励。这与传统技术明显不同，在传统技术中，激励保持恒定，而探头在空间上移动以收集测量值。这样做有助于我们实现成功故障诊断的两个目标。首先，与现有技术相比，我们减少了所需的测量次数；在现有方法失败的高噪声测量的情况下，这种减少尤其显着。其次，我们的技术解决了实值测量情况下的故障诊断问题（即 强度测量以及相位检测而不是相位测量），这导致更简单的测量硬件。我们使用非凸优化算法来生成数值结果以支持我们的结论。