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Chinese Journal of Space Science ›› 2017, Vol. 37 ›› Issue (1): 94-104.doi: 10.11728/cjss2017.01.094

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A Data Preprocessing Method and Preliminary Results of All-sky Airglow Image

DUAN Boqiang1, PAN Weilin2   

  1. 1. College of Electronic Engineering, Chengdu University of Information Technology, Chengdu 610225;
    2. Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
  • Received:2016-02-06 Revised:2016-05-21 Online:2017-01-15 Published:2017-01-19

Abstract:

Atmospheric Gravity Wave (AGW) is one of the fundamental waves in the atmosphere, which plays a significant role in the dynamics and thermal balance of the Mesosphere and Lower Thermosphere (MLT) region. By tracing the atmospheric airglow radiation, all-sky airglow imager can effectively image atmospheric gravity waves. In this paper, an image processing method for the data of OH airglow imager at Xining Station (36.6°N, 101.7°E) is presented. The imager was independently designed by State Key Laboratory of Space Weather of the CAS National Space Science Center. A typical gravity wave-event was observed using this imager on 17 May 2015. Finally, the OH airglow data obtained by observation experiments in Xining (on 17 May 2015 at 21:00BLT to 05:00BLT on the next day) is analyzed by this method. The horizontal wavelength, phase velocity and propagation direction of the gravity wave are successfully extracted, which proved the method is feasible and robust.

Key words: Atmospheric gravity wave, Airglow, Imager, Image processing

CLC Number: