Biomimetic coupled processing system based on location mechanism of Ormia ochracea

Yan-li HOU; Ke-wen XIA; Xue-jun JI

doi:10.3788/OPE.20172509.2516

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Biomimetic coupled processing system based on location mechanism of Ormia ochracea

Information Sciences | 更新时间：2020-08-13

- Biomimetic coupled processing system based on location mechanism of Ormia ochracea
- Optics and Precision Engineering Vol. 25, Issue 9, Pages: 2516-2523(2017)
- 作者机构：
  
  1.河北工业大学电子与信息工程学院, 天津 300401
  2.河北科技大学信息科学与工程学院, 河北石家庄 050018
  3.中国电子科技集团公司第五十四研究所, 河北石家庄 050081
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172509.2516
  CLC： TP391.9;Q811.8
- Received：28 February 2017，
  
  Accepted：12 May 2017，
  
  Published：25 September 2017
- 稿件说明：
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Yan-li HOU, Ke-wen XIA, Xue-jun JI. Biomimetic coupled processing system based on location mechanism of Ormia ochracea[J]. Optics and precision engineering, 2017, 25(9): 2516-2523.
DOI：

Yan-li HOU, Ke-wen XIA, Xue-jun JI. Biomimetic coupled processing system based on location mechanism of Ormia ochracea[J]. Optics and precision engineering, 2017, 25(9): 2516-2523. DOI： 10.3788/OPE.20172509.2516.

摘要

考虑超短基线的奥米亚棕蝇能精确地定位其寄主声源，建立了基于奥米亚棕蝇的仿生耦合处理系统以提高小型化测向设备的性能。依据奥米亚棕蝇听觉耦合结构的力学模型，计算听觉结构振动的时域响应、频域响应和响应的相位差，构建了仿生耦合处理系统的模型。分析了仿生耦合处理系统的性能，结果显示：通过设置合适的耦合参数，该系统可处理任意频段的信号，有效地增强信号间的相位差，理想条件下相位差可被放大18倍左右。针对确定的耦合参数，系统存在唯一的最敏感频率和最敏感入射角，即当信号频率等于最敏感频率时，耦合处理后的响应相位差可以达到180°；当以最敏感入射角入射时，响应相位差的变化率最大。该仿生耦合处理系统可采用两种体制测量方向：即依据测量的耦合相位差直接测向和在最敏感频率和最敏感入射角概念的基础上利用基线旋转实现测向。文中的分析结果为仿生耦合处理系统的应用提供了理论基础。

Abstract

Ormia ochracea with an extremely short baseline is able to locate its specific parasitoid host (cricket) precisely. On the fact mentioned above

this paper establishes a biomimetic coupled processing system based on the Ormia ochracea to improve the performance of miniature direction finding (DF) devices. According to the mechanical model of coupled auditory structure of the Ormia ochracea

the time domain response and frequency domain response of the auditory structure were deduced and their phase difference responses were computed. Then

a signal processing model for biomimetic coupled processing system was established

and its performance was analyzed. The results show that proposed system can be used to handle arbitrary frequency signals and enhance the phase difference between signals by setting proper coupled parameters

particularly

the phase difference can be amplified about 18 times under ideal conditions. For certain coupled parameters

there exists the most sensitive frequency and the most sensitive incident angle in the system

namely

the most sensitive frequency makes the phase difference between responses arrive to 180°. Moreover

the gradient of phase difference between responses reaches its peak at the most sensitive incident angle. The biomimetic coupled processing system may adopt two kinds of mechanisms to measure directions: one is direct DF with the measurable phase differences

and the other is indirect DF by baseline rotating using the most sensitive frequency and the most sensitive incident angle concepts. This paper provides a theoretical foundation for much wider applications of the biomimetic coupled processing systems.

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