The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Development of Small SAR System and Signal Processing Algorithm for Full-Polarization Data Acquisition with 30 cm Resolution

30 cm급 완전편파 데이터 획득을 위한 소형 SAR 시스템 개발 및 신호처리

  • 송정환 ((주)에코센싱 기술연구소) ;
  • 정철호 ((주)에코센싱 기술연구소) ;
  • 최종준 ((주)에코센싱 기술연구소) ;
  • 김진수 ((주)케이에스티 기술연구소) ;
  • 이우경 (한국항공대학교 항공전자정보공학부)
  • Received : 2018.07.05
  • Accepted : 2018.09.12
  • Published : 2018.09.30
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Abstract

In this paper, a small synthetic aperture radar(SAR) system with 30 cm resolution is proposed, and a RAW data-based Doppler parameter estimation and motion compensation algorithm is described in detail. Acquisition of both PolSAR and InSAR data are enabled because there are two channels each in the transmitter and receiver modules. Automotive-based field work is performed to obtain PolSAR data, and signal processing results are ultimately obtained. A motion compensation algorithm is used to mitigate the residual phase error due to platform oscillation, and improved performance is obtained with the motion compensation algorithm using the automotive field test data.

본 논문에는 30 cm 해상도를 갖는 소형 SAR(Synthetic Aperture Radar) 시스템 개발 결과를 소개하고, RAW 데이터 기반의 도플러 파라미터 추정 및 요동 보상 신호처리 알고리즘을 제시한다. 송수신 채널이 각각 2개이기 때문에 다중 편파 및 간섭계 영상 확보가 가능하며, 차량 탑재 시험을 통하여 다중 편파 SAR 데이터 획득 및 신호 처리 결과를 제시하였다. 플랫폼의 요동에 의한 잔여 위상 오차를 보상하는 알고리즘을 적용하였으며, 실제 차량 탑재 시험을 통하여 요동 보상에 따른 개선된 성능 결과를 제시하였다.

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