用于天线位置翻译的通用向量加法定理用于球形模式的基于过的反射抑制
Marc Dirix1,2, Stuart F Gregson3,4, Rostyslav F Dubrovka4
1E&C Anechoic Chambers, 2260 Westerlo, Belgium.
Sensors (Basel, Switzerland)
|September 13, 2025
概括
本研究提出了一种用于天线测量的新算法,简化了球形近场测试中的散射抑制. 该方法避免了复杂的转换,提高了天线和RCS测量的效率和精度.
科学领域:
- 电磁学和天线理论
- 电磁兼容性 (EMC) 是指电磁兼容性.
- 测量科学与技术 测量科学与技术
背景情况:
- 单色模式过在天线和雷达截面 (RCS) 测量中有效抑制散射.
- 传统方法需要转换到远场,涉及复杂的计算和潜在的信息丢失,特别是球形近场 (SNF) 测量.
- 对于SNF而言,现有的矢量加法定理的实现在转换方向和相对于最小球半径的大小上是有限的.
研究的目的:
- 引入一种新的,严格的算法,用于直接应用测试中的天线 (AUT) 位移在球形近场测量中.
- 开发一个高效的实现,无集成到标准的SNF数据处理.
- 扩展向量加法定理对SNF转换的适用性,以任意的转换方向和大小.
主要方法:
- 开发一种利用向量加法定理用于球形波的新算法,直接应用AUT位移.
- 在SNF数据处理链中高效地实现翻译和过算法.
- 推导一种通用向量加法定理,适用于任意转换方向和大小,包括小于最小球半径的情况.
主要成果:
- 这种新的算法成功地直接应用了AUT位移,绕过了转换到非对称远场的需要.
- 该方法消除了对二次球形波扩展和总结的要求,减少了计算工作量.
- 一般化的向量加法定理允许在任何方向进行转换,并且对于小于或大于最小球半径的位移.
结论:
- 拟议的算法提供了一种更有效和更严格的方法,用于在球形近场测量中抑制散射.
- 这种方法简化了SNF转换的数据处理链,避免了与远场转换相关的计算开销和信息丢失.
- 一般化的矢量加法定理显著提高了SNF测量技术的灵活性和适用性.
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