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相关概念视频

Polar Coordinates: Problem Solving01:27

Polar Coordinates: Problem Solving

Directional radiation patterns are central to antenna analysis, as they illustrate how signal strength varies with direction. These patterns are often modeled using polar plots, where the radial distance from the origin represents signal intensity at a given angle. A commonly used idealized form is the four-lobed rose curve, which captures the concept of directional beams in a simplified mathematical form.The four-lobed rose curve, described by r = cos⁡(2θ), features four symmetric lobes, each...
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In three-dimensional analytic geometry, a line can be fully described using vector equations when both a point on the line and its direction are known. This approach has practical applications in fields such as engineering and surveying, where precise spatial modeling is essential. For instance, a laser beam from a surveying instrument directed across a construction site can be modeled mathematically as a line using vectors.Let the laser beam originate from a known point P₀, represented by the...

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Updated: Jul 7, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
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线性天线阵列 采用元素位置扰动在阿齐木斯平面上的分隔束扫描方法.

Safaa I Abd Elrahman1, Ahmed M Elkhawaga2, Amr H Hussein2,3

  • 1Electronics and Communication Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
概括

本研究介绍了使用元素位置扰动 (EPP) 的两个部门光束扫描方法 (BSA). 一种新的SLL/EPP-BSA方法显著降低了侧叶水平,以提高天线阵列性能.

关键词:
阵列稀释 阵列稀释波束扫描方法 (BSA) 的方法.元素的位置扰动 (EPP)基因算法 (GA) 是一种基因算法.一半功率光束宽度 (HPBW)线性天线阵列 (LAA) 是指线性天线阵列.平面天线阵列 (PAA) 是一个平面天线阵列.侧叶水平 (SLL) 的侧叶水平

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科学领域:

  • 电磁学和应用物理学
  • 天线理论和设计.
  • 信号处理 信号处理

背景情况:

  • 传统的光束扫描方法经常面临侧叶水平 (SLL) 增加和复杂的养网络的挑战.
  • 元素位置扰动 (EPPs) 为光束方向提供了替代方案,但可能导致SLL显著增加.
  • 优化天线阵列模式需要平衡扫描范围,光束宽度和SLL.

研究的目的:

  • 引入和评估两种使用元素位置扰动 (EPP) 的新型部门光束扫描方法 (BSA).
  • 开发一种混合 SLL 减少和 EPP-BSA 技术,以减轻传统 EPP-BSA 的缺点.
  • 提出一个平面天线阵列稀释方法,与开发的BSA相兼容.

主要方法:

  • 开发了两个基于元素位置扰动 (EPPs) 在光平面上的BSA,保持元素激发变量不变.
  • 实施单一卷积/遗传算法 (SC/GA) 进行初始的SLL减少,随后是EPP-BSA.
  • 利用计算机模拟技术 (CST) 微波工作室用于模拟,模拟和验证天线阵列设计.

主要成果:

  • 拟议的SLL/EPP-BSA方法实现了相对恒定的半功率光束宽度 (HPBW) 的缩小扫描范围,与标准EPP-BSA相比,SLL显著降低.
  • 恒定合成激发系数和无渐进相变器简化了制造,降低了供应网络成本.
  • 模拟通过拟议的稀释方法和CST建模来展示可实现和现实的天线阵列设计.

结论:

  • SLL/EPP-BSA技术有效地减轻了与EPP-BSA相关的高SLL问题,提供了更好的天线性能.
  • 提出的方法促进了先进天线阵列的成本效益和简化制造流程.
  • 该研究验证了基于EPP的BSA与SLL减少技术相结合的有效性,用于实际的天线应用.