塔架环境下运载火箭天线耦合辐射仿真研究

doi:10.16182/j.issn1004731x.joss.23-0316

摘要/Abstract

摘要：

运载火箭无线系统在发射场塔架内测试时的信号辐射十分复杂，为进一步研究整箭状态下的天线辐射特性特别是多天线的耦合辐射，借助UG建模技术和Altair Hyper Works 2017电磁兼容仿真平台，构建塔架-箭体复杂环境下的多天线模型，基于MOM-PO（method of moments-physical optics）混合算法，划定不同计算区域进行不同尺度剖分，实现快速精确求解多个天线耦合辐射电磁参数，并通过试验验证了仿真模型的有效性，拓展研究了单路和多路天线馈电下的近场和远场分布规律。仿真结果分析表明：地面接收天线适合布置在正对活动平台透波口位置；可将其他频段接收天线布置在靠近平台两侧位置；考虑复杂环境绘制的箭上耦合天线方向图可提升地面仿真的覆盖性。

关键词: 矩量法, 物理光学法, 天线辐射, 电磁仿真, 运载火箭, 塔架

Abstract:

The signal radiation of the launch vehicle wireless system test in the closed tower of the launching site is very complex. In order to further study the antenna radiation characteristics, especially the multi-antenna coupled radiation in the whole vehicle state, a multi-antenna model with tower-vehicle body is established in this paper based on UG modeling technology and Altair Hyper Works 2017 electromagnetic compatibility simulation platform. It involves the method of moments-physical optics (MOM-PO) hybrid algorithm and delineates different calculation areas for different scale divisions, so as to solve quickly and accurately electromagnetic parameters of multi-antenna coupled radiation. The validity of the simulation model is verified by experiments.The laws of near-field and far-filed distribution under single antenna and multiple ones are further studied.The simulation results show that the ground receiving antenna is suitable for being arranged in the position of the active platform transparent port. Receiving antennas of other frequency bands can be arranged close to both sides of the platform. Coupled antenna patterns of the vehicle considering complex environments can improve the coverage of ground simulations.

Key words: method of moments, physical optics, antenna radiation, electromagnetic simulation, launch vehicle, tower

中图分类号:

TN06

张芬,于涛,韩勇等 . 塔架环境下运载火箭天线耦合辐射仿真研究[J]. 系统仿真学报, 2023, 35(9): 1847-1859.

Zhang Fen,Yu Tao,Han Yong,et al . Simulation Research on Multi-antenna Coupled Radiation of Launch Vehicle in Tower[J]. Journal of System Simulation, 2023, 35(9): 1847-1859.

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天线名称	塔架位置	数量	波段
一级遥测	5夹层	2	S
二级遥测	6夹层	2	S
脉冲相参应答机		1	C
中继相控阵		1	S
安控终端		3	P
多星座导航接收机		4	L

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