Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Daytime Temperature Measuring LIDAR System by Using Rotational Raman Signal

회전 라만 신호를 이용한 낮 시간 온도측정 라이다

  • Yoon, Moonsang (Department of Physics, Kongju National University) ;
  • Kim, Dukhyeon (Division of Cultural Studies, Hanbat National University) ;
  • Park, Sunho (Division of Cultural Studies, Hanbat National University) ;
  • Sin, MyeongJae (Division of Cultural Studies, Hanbat National University) ;
  • Kim, Yonggi (Department of Physics, Kongju National University) ;
  • Jung, Haedoo (Division of Cultural Studies, Hanbat National University)
  • Received : 2012.06.08
  • Accepted : 2012.07.02
  • Published : 2012.08.25
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Abstract

We have developed a daytime measuring rotational Raman LIDAR system for temperature measurement. To decrease the background signal from sunlight, we have designed and installed narrow band (0.5 nm) and high rejection ($10^{-6}$) rate band pass filter system using a grating and an interference filter. We calibrated our system by comparing our horizontal temperature profile and KMA (Korea Meteorological Administration) data. We have found that our temperature profile has a good correlation with KMA data within our theoretically expected variance. And we have used these calibration values in obtaining a vertical temperature distribution. To check our system, we also have compared our vertical temperature data with US standard atmospheric temperature profile. We also have compared our temperature profile with sonde data.

본 연구에서는 질소와 산소의 회전 라만 신호를 측정하여 낮 시간 온도 측정이 가능한 라이다 시스템을 자체 개발하였다. 태양광에 의한 배경신호를 줄이기 위하여 파장의 폭이 좁고(0.5 nm) 제거율이 높은($10^{-6}$) 회절판과 간섭필터를 이용하였다. 개발된 장치의 성능을 검증하기 위하여 라이다를 수평방향으로 조사하여 온도 특성을 얻고 기상청에서 주어지는 값과 비교하여 상관관계가 일치함을 알 수 있었다. 그리고 수직온도분포로 얻기 위하여 수평으로 얻은 검정 값을 사용하였다. 또한 수직방향으로 조사하여 미국 표준 데이터와 비교하였으며, 존데 데이터와 검정을 통한 본 연구의 결과를 비교하였다.

Keywords

References

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