| 姚强,金惠良,叶骞.通过复数几何光学对一种天线面型诊断方法的改进[J].高技术通讯(中文),2021,31(2):180~187 |
| 通过复数几何光学对一种天线面型诊断方法的改进 |
| Improvement on an antennas surface diagnosis method by using complex geometrical optics |
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| DOI：10. 3772/j. issn. 1002-0470. 2021. 02. 008 |
| 中文关键词: 实数几何光学(RGO)； 复数几何光学(CGO)； 反射天线； 高斯馈源； 表面形变 |
| 英文关键词: real geometrical optics (RGO), complex geometrical optics (CGO), antenna, Gaussian feed, surface deformation |
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| 中文摘要: |
| 通过天线所辐射的电场幅值来求解天线面形变是一种新的天线面型诊断方法，但是由于该方法基于实数几何光学(RGO)，忽略了高斯馈源的影响，从而导致了一定的误差。本文通过复数几何光学(CGO)对高斯馈源所发射的电磁波的复数相位进行了研究，推导得出了较准确的天线面形变和天线辐射场幅值之间的关系表达式。在此基础上，提出了一种迭代算法来求解天线面形变，仿真结果表明该方法可以有效提高天线面形变的求解精度。 |
| 英文摘要: |
| Using the amplitude of electric field radiated from antennas to retrieve surface deformation of antennas is a new surface diagnosis method. However, this method is based on real geometrical optics(RGO) which ignores the influence of Gaussian feed. This article utilizes complex geometrical optics(CGO) to analyze the complex phase of electromagnetic wave radiated from Gaussian feed and derives an accurate functional relationship between surface deformation and amplitude value. An iterative algorithm is proposed to solve that function. Simulation result shows that the surface deformation of antennas retrieved by the proposed algorithm can reach a high level of accuracy. |
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