翼尖涡的电磁散射特性研究

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI:10.1109/ISAPE54070.2021.9753519

Jiawei Ye, S. Gong, Senshan Song

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引用次数: 0

摘要

飞机翼尖涡的探测一直是航空安全和飞机隐身的关键问题。以往的研究多采用密度变化和水汽变化来计算介质参数和雷达截面分布。本文利用Ansys Fluent软件和流体力学N-S方程等数值模型对飞机周围大气压力变化进行了计算和模拟。为了研究其散射截面的变化，在给定的大气压力波动数据下，我们计算了飞机周围介电参数的波动。最后，给出了三种入射波角下RCS与雷达接收水平角的关系，以及水平极化和垂直极化情况下RCS与接收角度的变化规律。这一结论对研究翼尖涡的散射特性具有积极的意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research on the Electromagnetic Scattering Characteristics of Wingtip Vortices

The detection of aircraft wingtip vortices has always been a key issue for aviation safety and aircraft stealth. Previous work mostly used density variation and water vapor variation to calculate dielectric parameters and the distribution of radar cross section(RCS). Here, the atmospheric pressure variation around the aircraft are calculated and simulated using Ansys Fluent software and numerical models such as fluid mechanics N-S equation. To investigate the change of its scattering cross section, we calculated the fluctuations of the dielectric parameters around aircraft for the given data of atmospheric pressure fluctuations. Finally, we show the relation between RCS and radar receiving horizontal angle under three incident wave angles, and the change rule of RCS and receiving angle both in the horizontal polarization and vertical polarization cases. This conclusion has a positive effect on the study of the scattering characteristics of wingtip vortices.

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2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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