The optimal design of a binaural sparse-aperture system

被引：3

作者：

Zhang, Luting ^{[1
]}

Liu, Ming ^{[1
]}

Zhao, Yuejin ^{[1
]}

Dong, Liquan ^{[1
]}

Li, Xinji ^{[1
]}

Du, Haoyuan ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Opt & Photon, Beijing Key Lab Precis Optoelect Measurement Inst, Beijing 100081, Peoples R China

来源：

RESULTS IN PHYSICS | 2020年 / 16卷

基金：

中国国家自然科学基金;

关键词：

Sparse-aperture system; Optical transform function; Rotation; Peak signal-to-noise ratio; RESOLUTION;

D O I：

10.1016/j.rinp.2020.102970

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical sparse-aperture (OSA) can greatly improve the spatial resolution of optical system. However, its optical designs are complex. This paper proposes a binaural sparse-aperture system with a simple and symmetrical structure, which is composed of three apertures. Apertures are rotated to obtain rich frequency information. The scheme of rotating apertures is analyzed by taking the ratios of sub-apertures and the number of rotations as variables. The image artifacts are suppressed through processing in the frequency domain. Simulation results analyze the effects on OTFs and imaging quality with different rotation numbers and ratios of sub-apertures. Experimental results show that this system can reach almost the same cut-off frequency as what the equivalent multi-aperture system can reach.

引用

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页数：8

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