Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Thermal Performance Test of the On-Board Blackbody System in the orbital environment for Non-Uniformity Correction of an Infrared Sensor

적외선 센서 교정용 위성 탑재 흑체 시스템의 궤도 환경 열성능 평가 시험

  • 최필경 (한화시스템) ;
  • 김혜인 (조선대학교 항공우주공학과 우주기술융합연구실) ;
  • 오현웅 (조선대학교 항공우주공학과 우주기술융합연구실) ;
  • 유병철 (한화시스템) ;
  • 이경묵 (한화시스템) ;
  • 홍진석 (한화시스템)
  • Received : 2022.09.30
  • Accepted : 2022.11.29
  • Published : 2022.12.31
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Abstract

The output of an infrared (IR) sensor mounted on an EO/IR payload is known to change during a mission period in an orbital environment. As it is required to calibrate the output of the IR sensor periodically to obtain high-quality images, an on-board black body system is mounted on the payload. All systems operating in the space environment require performance tests on ground to verify the target performance in the orbital environment. Therefore, it is also required to test the black body system to verify the performance of the surface temperature uniformity and the estimated representative temperature error within the target temperature range in the operating environment. In this study, calibration of the estimated representative temperature error and verification of the thermal performance of the black body system were conducted by performed a performance test in the thermal vacuum chamber applying deep space radiation cooling effect of an orbital environment.

EO/IR 위성에 탑재된 적외선 센서(IR Sensor)는 궤도환경에서 임무기간 동안 복사 에너지에 대한 센서 출력의 변화가 발생한다. 고품질 영상을 획득하기 위해 출력을 교정할 수 있는 주기적인 교정이 필요하며, 센서의 주기적이고 정밀한 교정을 위해 탑재체 내부에 흑체 시스템이 적용하였다. 우주 환경에서 사용되는 모든 시스템은 궤도환경에서의 목표 성능을 검증하기 위해 지상에서의 성능시험이 요구되고 있다. 흑체 시스템은 운용환경에서 목표 온도 범위에서 대표추정온도 오차와 흑체 표면온도균일도 성능의 시험적 검증이 요구되고 있다. 본 연구에서는, 궤도환경으로 우주배경복사 냉각이 모사된 열진공 시험을 통해 제안된 흑체 시스템의 대표추정온도 오차 교정 및 성능 검증을 진행하였다.

Keywords

References

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