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Optimal ATMS Remapping Algorithm for Climate Research
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DOI：10.1109/TGRS.2014.2310702.png)
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摘要
En 中文
In this paper, the Backus-Gilbert (B-G) method was used for the conversion from Advanced Technology Microwave Sounder (ATMS) FOVs to AMSU-A FOVs. This method provides not only an optimal combination of measurements within a specified region but also a quantitative measure of the tradeoff between resolution and noise. Based on a subpixel microwave antenna temperature simulation technique, ATMS observations at a specified FOV size with 1.1 degrees sampling interval are simulated. Errors of remapping results were quantified by using simulated data sets and real AMSU observations. It is shown that the biases and/or standard deviations of brightness temperatures are significantly reduced by using the B-G generated remapping coefficients. For K/Ka bands, a resolution enhancement by the remap of ATMS observations introduces about 0.6 K increase in noise. For other bands, the channel sensitivity was improved for the remapped data.
Keyword:
Advanced Microwave Sounding Unit (AMSU)
Advanced Technology Microwave Sounder (ATMS)
remapping
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期刊
IF:
8.6
论文数:
2.2W
被引数:
10.7W
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