星载全球大气波动成像仪研究
Research on Space-based Global Atmospheric Wave Imager
查看参考文献11篇
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文摘
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在卫星上对中间层顶区域的气辉辐射成像观测,对于全球大气波动的监测和研究具有重要的意义.利用TDICCD对O_2A(0-0)气辉进行成像观测,计算了曝光积分时间、信噪比和能达到的最高空间分辨率,分析了地球自转对空间分辨率的影响,在此基础上提出一种星载全球大气波动成像仪方案,该方案可以观测垂直波长大于10 km的大气波动,最高水平分辨率可以达到0.33 km. |
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其他语种文摘
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Space-based airglow imaging observation is significant for monitoring global atmospheric waves in the mesopause region.The Time Delay and Integration Charge Coupled Device(TDICCD) is used to capture images of O_2A(0-0) airglow.The required exposure time and the signal-to-noise ratio are calculated,and the latitude-dependent space resolutions are analyzed with a modulation transfer function.Due to the Earth’s rotation,for a circular orbit with a height of 700 km and an incline angle of 73°,the spatial resolution increases with in creasing latitudes,which is 5.7 km near the equator.Based on the above analysis,the instrument’s block diagram is also given.Results indicate that the space-based airglow imager can observe atmospheric waves with a vertical wavelength of approximately 10 km or longer and with the best horizontal spatial resolution of 0.33 km. |
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来源
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空间科学学报
,2012,32(3):362-367 【核心库】
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关键词
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O_2A(0-0)气辉
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全球大气波动成像仪
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中间层顶区域
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大气重力波
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地址
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中国科学院空间科学与应用研究中心, 北京, 100190
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语种
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中文 |
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ISSN
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0254-6124 |
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学科
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大气科学(气象学) |
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基金
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中国科学院知识创新工程重要方向项目
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文献收藏号
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CSCD:4572865
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参考文献 共
11
共1页
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