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生物启发的虚拟光圈扩展小光圈HFSWR多元件阵列的方法

Hongbo Li¹, Aijun Liu², Qiang Yang¹

¹Electronics and Information Engineering, Harbin Institute of Technology, Harbin, People's Republic of China.

Bioinspiration & biomimetics

|October 17, 2023

概括

这项研究引入了一种新的方法来增强雷达系统,通过模仿Ormia ochracea,扩展高频表面波雷达阵列的虚拟光圈,以改进目标定位.

科学领域:

生物模拟技术是生物模拟的
电磁学电磁学电磁学电磁学
雷达系统工程雷达系统工程

背景情况:

小光圈高频表面波雷达 (HFSWR) 阵列在实现足够的虚拟光圈扩展方面存在局限性.
尽管波长不兼容,但Ormia ochracea的听觉系统由于其合的机械结构,表现出了显著的声音定位能力.

研究的目的:

开发一种用于扩展HFSWR多元数组虚拟光圈的新方法.
为了利用仿生学,特别是Ormia ochracea的合耳朵结构,提高雷达性能.
引入一个频率转换算法,使系统适应任意频率.

主要方法:

设计了一种两度自由度 (DOF) 的生物灵感合系统,模仿奥尔米亚的耳朵.
对光圈扩展能力和虚拟阵列接收信号模型的构建进行定量分析.
开发和验证频率转换算法和设计两个多DOF合系统.

主要成果:

通过比较灵感数组与普通数组的数值模拟,展示了显著的虚拟光圈扩展能力.
验证了拟议的频率转换算法的有效性.
确定了所需频率的最佳系统参数,并通过实际的雷达数据证实了该方法的有效性.

结论:

拟议的仿生方法有效地扩展了HFSWR阵列的虚拟光圈.
频率转换算法允许在各种所需频率上灵活应用.
这种方法为提高小光圈雷达系统性能提供了一个有前途的解决方案.

关键词:

在HFSWR多元件数组中,多元件数组是HFSWR.生物启发的合系统频率转换算法频率转换算法多个自由度的系统.小孔数组是一个小孔数组.虚拟光圈扩展的虚拟光圈扩展

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