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Antenna array characterization via radio interferometry observation of astronomical sources

机译：天线阵列通过无线电干涉测量观察天文来源的观察

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摘要

We present an in-situ antenna characterization method and results for a “low-frequency” radio astronomy engineering prototype array, characterized over the 75-300 MHz frequency range. The presence of multiple cosmic radio sources, particularly the dominant Galactic noise, makes in-situ characterization at these frequencies challenging; however, it will be shown that high quality measurement is possible via radio interferometry techniques. This method is well-known in the radio astronomy community but seems less so in antenna measurement and wireless communications communities, although the measurement challenges involving multiple undesired sources in the antenna field-of-view bear some similarities. We discuss this approach and our results with the expectation that this principle may find greater application in related fields.
机译：我们提出了一种原位天线特征方法，并为“低频”无线电天文工程原型阵列结果，其特征在于75-300 MHz频率范围。多宇宙无线电源的存在，特别是主导的银河系噪声，在这些频率挑战的原位表征;然而，将显示通过无线电干涉测量技术可以进行高质量的测量。这种方法在射频天文社区中是众所周知的，但在天线测量和无线通信社区中似乎较少，尽管涉及天线的多个不期望的来源的测量挑战 - 视野视野存在一些相似之处。我们讨论这种方法，我们的结果期望，这一原则可能在相关领域找到更大的应用。

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