Parametric calibration of antenna arrays uses mathematical models of the array manifold with adjustable parameters. In this study, the author shows that the standard model used in that array signal processing literature may not be capable of accurate calibration because of the mismatch between the assumed manifold and the true electromagnetic manifold. To improve calibration quality, the author uses the extended array manifold which employs a non-square coupling matrix instead of the square mutual coupling matrix used in the standard model. This new model makes it possible to increase array calibration accuracy to any desired level, at the cost of requiring more calibration sources.

中文翻译：

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使用扩展歧管校准天线阵列

天线阵列的参数校准使用具有可调参数的阵列歧管的数学模型。在这项研究中，作者表明，在阵列信号处理文献中使用的标准模型可能无法准确校准，因为假定的歧管和真实的电磁歧管之间不匹配。为了提高校准质量，作者使用扩展阵列流形，该扩展流形采用了非正方形耦合矩阵而不是标准模型中使用的正方形互耦合矩阵。这种新模型可以将阵列校准精度提高到任何期望的水平，但需要更多的校准源。