Methods Used For the 2006 Radiance Lights
Methods Used For the 2006 Radiance Lights
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DOI：
10.7125/apan.30.18
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发表时间：
2010-12
期刊：
影响因子：
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通讯作者：
D. Ziskin;K. Baugh;F. Hsu;C. Elvidge
中科院分区：
文献类型：
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作者：
D. Ziskin;K. Baugh;F. Hsu;C. Elvidge
在国防气象卫星计划（DMSP）卫星上运行的作战直线扫描系统（OLS）具有在全球夜间记录低光成像数据的独特能力。这些数据存档于美国国家海洋和大气管理局（NOAA）国家地球物理数据中心（NGDC）。有用的数据记录可以追溯到1992年，而且还在继续。OLS可见光波段探测器观测到的辐射比大多数其他地球观测卫星暗100万倍。该传感器通常在高增益设置下工作，以检测月光下的云。然而，由于6位量化和有限的动态范围，记录的数据在城市中心明亮的核心中饱和。在月球低照度下获得了有限的一组观测结果，其中探测器的增益设置明显低于其典型的操作设置（有时是100倍）。通过将这些在低增益设置下获得的稀疏数据与在高增益设置下获得的操作数据相结合，我们生产了2006年无传感器饱和的全球夜间灯产品。本产品可与基于飞行前传感器校准的辐射相关。
The Operational Linescan System (OLS) flown on the Defense Meteorological Satellite Program (DMSP) satellites, has a unique capability to record low light imaging data at night worldwide. These data are archived at the National Oceanic and Atmospheric Administration (NOAA) National Geophysical Data Center (NGDC). The useful data record stretches back to 1992 and is ongoing. The OLS visible band detector observes radiances about one million times dimmer than most other Earth observing satellites. The sensor is typically operated in a high gain setting to enable the detection of moonlit clouds. However, with six bit quantization and limited dynamic range, the recorded data are saturated in the bright cores of urban centers. A limited set of observations have been obtained at low lunar illumination were obtained where the gain of the detector was set significantly lower than its typical operational setting (sometimes by a factor of 100). By combining these sparse data acquired at low gain settings with the operational data acquired at high gain settings, we have produced a global nighttime lights product for 2006 with no sensor saturation. This product can be related to radiances based on the pre-flights sensor calibration.