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.
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页数：9
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