Design and testing method of imaging system based on FMCW circular scanning SAR

Liu Lianghuan; Huang Shifeng; Chen Zhangyou

doi:10.16157/j.issn.0258-7998.173508

Dianzi Jishu Yingyong (Mar 2018)

Design and testing method of imaging system based on FMCW circular scanning SAR

Liu Lianghuan,
Huang Shifeng,
Chen Zhangyou

Affiliations

Liu Lianghuan: Electronic Information School，Wuhan University，Wuhan 430072，China
Huang Shifeng: Electronic Information School，Wuhan University，Wuhan 430072，China
Chen Zhangyou: Electronic Information School，Wuhan University，Wuhan 430072，China

DOI: https://doi.org/10.16157/j.issn.0258-7998.173508
Journal volume & issue: Vol. 44, no. 3
pp. 47 – 51

Abstract

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In order to achieve high resolution imaging with different distances, a target range direction detection system is designed and tested under the frequency modulated continuous wave(FMCW) circular scanning synthetic aperture radar(SAR) system. The system is realized by analog front end and FPGA, and various working modes are designed to realize three detecting ranges and corresponding resolutions in the near, middle and far distance. Through MATLAB the RF front-end de-chirped signals are simulated, loaded into the FPGA digital down conversion processing, and emulated to get output spectrum. Closed-loop board level measurement is carried out, and the feasibility of the target range direction imaging system is verified based on FMCW circular scanning SAR.

Published in Dianzi Jishu Yingyong

ISSN: 0258-7998 (Print)
Publisher: National Computer System Engineering Research Institute of China
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Electronics
Website: http://journal.chinaaet.com/en

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