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首页> 外文期刊>Applied optics >POSSIBLE CAUSES OF CALIBRATION DEGRADATION OF THE ADVANCED VERY HIGH RESOLUTION RADIOMETER VISIBLE AND NEAR-INFRARED CHANNELS
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POSSIBLE CAUSES OF CALIBRATION DEGRADATION OF THE ADVANCED VERY HIGH RESOLUTION RADIOMETER VISIBLE AND NEAR-INFRARED CHANNELS

机译：高度高分辨率的可见光和近红外通道校准过时的可能原因

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摘要

Gradual deterioration of calibration of the Advanced Very High Resolution Radiometer (AVHRR) can be explained by the erasion of the scanning mirror as a result of interaction with interplanetary dust. Other elements of the instrument (optical filters, detector, electronics) were also examined for their behavior in space conditions and were found most likely to be stable and not responsible for the decrease in sensitivity. Calculations show that the erosion of the scanning mirror is of the order of 4.5% per year, although this erosion is very variable because of the variability of the density of interplanetary dust. This erosion can easily explain the 3-5% per year deterioration of the AVHRR sensors on NOAA-7 and NOAA-9. [References: 14]
机译：先进超高分辨率辐射计（AVHRR）校准的逐步恶化可以通过与行星际尘埃相互作用导致的扫描镜的擦除来解释。还检查了仪器的其他元件（光学滤波器，检测器，电子设备）在空间条件下的行为，发现它们很可能是稳定的，而不会对灵敏度的降低负责。计算表明，尽管由于行星际尘埃密度的变化，这种腐蚀变化很大，但扫描镜的腐蚀每年约为4.5％。这种腐蚀很容易解释了NOAA-7和NOAA-9上的AVHRR传感器每年恶化3-5％。 [参考：14]

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