Microwave Holography Using Point-Spread Functions Measured With Calibration Objects
Microwave Holography Using Point-Spread Functions Measured With Calibration Objects
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DOI：
10.1109/tim.2014.2347652
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发表时间：
2015-02-01
影响因子：
5.6
通讯作者：
Nikolova, Natalia K.
中科院分区：
文献类型：
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作者：
Amineh, Reza K.;McCombe, Justin J.;Nikolova, Natalia K.
微波全息术需要知道入射场和背景介质的绿色张量。在近场成像中，这些的分析模型是不充分的，并且先前已经提出了使用电磁模拟。然而，在实践中，这种模拟的保真度也可能不足。在这里，我们提出了一种测量方法来获取这些信息，从而消除了需要估计它的分析或数值。我们验证的方法，通过模拟数据采集，以及通过实验。它示出，这种方法的特点更可靠的测量系统比模拟导致显着改善的图像质量。
Microwave holography requires knowledge of the incident field and the Green tensor of the background medium. In near-field imaging, analytical models of these are inadequate and the use of electromagnetic simulations has been previously proposed. In practice, however, the fidelity of such simulations may also be insufficient. Here, we propose a measurement method for the acquisition of this information, thus eliminating the need to estimate it analytically or numerically. We validate the approach through simulated data acquisitions as well as through experiments. It is shown that this approach characterizes the measurement system more reliably than simulations leading to significant improvement of the image quality.