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首页> 外文期刊>Journal of the Meteorological Society of Japan >Validation of Himawari-8/AHI Radiometric Calibration Based on Two Years of In-Orbit Data
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Validation of Himawari-8/AHI Radiometric Calibration Based on Two Years of In-Orbit Data

机译：基于两年的轨道数据验证HIMAWARI-8 / AHI辐射校准

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摘要

The new geostationary (GEO) meteorological satellite of the Japan Meteorological Agency (JMA), Himawari-8, entered operation on 7 July 2015. Himawari-8 features the new 16-band Advanced Himawari Imager (AHI), whose spatial resolution and observation frequency are improved over those of its predecessor MTSAT-series satellites. These improvements will bring about unprecedented levels of performance in nowcasting services and short-range weather forecasting systems. In view of the essential nature of navigation and radiometric calibration in fully leveraging the imager's potential, this study reports on the current status of calibration for the AIR Image navigation is accurate to within 1 km, and band-to-band coregistration has also been validated. Infrared (IR) band calibration is accurate to within 0.2 K with no significant diurnal variation and is being validated using an approach developed under the Global Space-based Inter-Calibration System (GSICS) framework. Validation approaches are currently being tested for the visible and near-IR (NTR) bands. Two such approaches were compared and found to produce largely consistent results.
机译：日本气象局（JMA），Himawari-8的新地球静止（Geo）气象卫星，2015年7月7日进入运营。Himawari-8拥有新的16频道先进的Himawari Imager（AHI），其空间分辨率和观察频率改善了其前任MTSAT系列卫星的卫星。这些改进将带来迄今为止在漫游服务和短程天气预报系统中的前所未有的绩效水平。鉴于导航和辐射校准的基本性质完全利用成像仪的潜力，本研究报告了空气图像导航校准的当前状态准确到1公里内，并且还经过验证了带对频段内容。红外线（IR）带校准在0.2K内被精确到0.2 k内，没有显着的昼夜变化，并且使用在全球基于空间的校准系统（GSICS）框架下开发的方法进行验证。目前正在测试可见和接近IR（NTR）频段的验证方法。比较了两种这种方法，发现产生了很大一致的结果。

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