A ViSAR Imaging Method for Terahertz Band Using Chirp Z-Transform

被引：2

作者：

Zuo, Feng ^{[1
]}

Li, Jin ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Sichuan, Peoples R China

来源：

COMMUNICATIONS, SIGNAL PROCESSING, AND SYSTEMS, CSPS 2018, VOL II: SIGNAL PROCESSING | 2020年 / 516卷

关键词：

ViSAR; CZT; PFA; Terahertz;

D O I：

10.1007/978-981-13-6504-1_96

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

Video synthetic aperture radar (ViSAR) as a new imaging mode has received more attention in recent years. In this mode, ViSAR system needs to persistently form a sequence of images while collecting data. For ViSAR, the frame rate needs to exceed 5 Hz to track maneuvering ground targets. Therefore, ViSAR system generally works in terahertz band. To avoid the 2-D interpolation of the polar format algorithm (PFA), a ViSAR imaging method is proposed in this paper. Based on the small synthetic angle characteristic of THz ViSAR, this method decomposes 2-D interpolation into range and azimuth interpolation, which is implemented by chirp Z-transform (CZT). The effectiveness of this method is validated by the simulation results in 0.3 THz.

引用

页码：796 / 804

页数：9

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