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1. (WO2018196254) AMPLITUDE-PHASE CORRECTION METHOD AND SYSTEM FOR MICROWAVE IMAGING SYSTEM

Pub. No.:    WO/2018/196254    International Application No.:    PCT/CN2017/100910
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Sep 08 01:59:59 CEST 2017
IPC: G01S 7/40
G01S 13/89
G01S 13/88
Applicants: SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
深圳市太赫兹科技创新研究院
SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO.,LTD.
深圳市无牙太赫兹科技有限公司
Inventors: QI, Chunchao
祁春超
WU, Guangsheng
吴光胜
ZHAO, Shukai
赵术开
XIAO, Qian
肖千
WANG, Aixian
王爱先
Title: AMPLITUDE-PHASE CORRECTION METHOD AND SYSTEM FOR MICROWAVE IMAGING SYSTEM
Abstract:
Disclosed are an amplitude-phase correction method and system for a microwave imaging system. The amplitude-phase correction method comprises: according to a first pre-set algorithm, carrying out data processing, in the range direction, on an echo signal reflected by a target object and acquired by a linear array antenna to obtain a compressed signal in the range direction (S10); extracting a range value corresponding to the maximum amplitude, in the range direction, of the compressed signal in the range direction (S20); carrying out time delay compensation on the echo signal according to the range value to obtain a time-delay-compensated signal (S30); according to a second pre-set algorithm, carrying out data processing on the time-delay-compensated signal to obtain an amplitude-phase signal (S40); and carrying out amplitude-phase correction on the echo signal according to the time-delay-compensated signal and the amplitude-phase signal to obtain a corrected echo signal (S50). By means of directly carrying out amplitude-phase correction on an echo signal, acquired by a linear array antenna, from a target object, the method does not depend on direct waves, and the difference between directional patterns of channels of the linear array antenna can be better compensated for.