A Doppler aliasing free micro-motion parameter estimation method in the terahertz band

被引：2

作者：

Yang, Qi ^{[1
]}

Deng, Bin ^{[1
]}

Wang, Hongqiang ^{[1
]}

Qin, Yuliang ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING | 2017年

关键词：

Terahertz radar; Micro-Doppler; Generalized Hough Transform; Doppler aliasing; Parameter estimation;

D O I：

10.1186/s13638-017-0845-z

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Micro-Doppler, induced by micro-motion of targets, is an important characteristic for target recognition once extracted via parameter estimation. However, micro-Doppler is usually too significant to result in aliasing in the terahertz band. According to this problem, a Doppler aliasing free micro-motion parameter estimation method based on the modulo Generalized Hough transform is proposed in this paper. Its basic idea is to search and match the parameters of aliasing micro-Doppler curves in the time-frequency distribution image. The high estimation precision and excellent noise immunity of this method are verified through simulations based on CST data and experiments based on a 0.33 THz radar system.

引用

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