| 一种全天空气辉成像仪数据预处理方法和初步结果 |
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| 引用本文： | 段博强,潘蔚琳.一种全天空气辉成像仪数据预处理方法和初步结果[J].空间科学学报,2017,37(1):94-104. |
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| 作者姓名： | 段博强 潘蔚琳 |
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| 作者单位： | 1. 成都信息工程大学电子工程学院 成都 610225; |
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| 基金项目： | 中国科学院知识创新工程重要方向项目资助（KZCX2-YW-JS202） |
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| 摘 要： | 大气重力波是大气中的基本波动形式之一，在中高层大气动力和热力学过程中起着十分重要的作用.全天空气辉成像仪是一种以大气气辉辐射为示踪物，能够有效对大气重力波成像的仪器.本文针对中国科学院国家空间科学中心空间天气学国家重点实验室中高层大气组自主研制的全天空气辉成像仪所观测的数据，提出了一种气辉图像预处理方法，进行平场校正、方位校正、星光去除和坐标映射等数据订正.利用该方法处理2015年5月17日21:00BLT至次日05:00BLT西宁台站（36.6°N，101.7°E）的OH气辉数据，发现一次重力波事件，分析并获得了该重力波的水平波长、观测水平相速度和传播方向（分别为17.72km，47m·s-1，339°）.研究结果表明该方法是可行的.
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| 关 键 词： | 大气重力波 气辉 成像仪 图像处理 |
| 收稿时间： | 2016-02-06 |
A Data Preprocessing Method and Preliminary Results of All-sky Airglow Image |
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| Affiliation: | 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 |
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| 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. |
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