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FY-2和GMS-5红外通道遥感图像质量的功率谱分析
Power Spectrum Analysis on the Image Quality of FA-2 & GMS-5 IR Channels
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摘要: 根据遥感图像功率谱的性质，对比分析了FY-2和GMS-5扫描辐射计红外通道的图像质量。计算结果表明，FY-2红外通道遥感图像功率谱各分量之和不高于GMS-5红外A通道遥感图像的功率谱各分量之和。数值模拟试验的结果表明，FY-2红外通道的图像质量大体上与GMS-5红外A通道的图像质量相当。Abstract: The image qualities of FY-2 and GMS-5 IR channels are analyzed by means of the image power spectrum analysis. The results show that the sum of the components in the image power spectra of FY-2 IR channel is a little less than that of GMS-5 IR A channel, and based on the results of numerical simulation experiment, it is shown that the image quality of FY-2 IR channel is equivalent to that of GMS-5 IR A channel.
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Key words:
- IR channel;
- Image quality;
- Power spectrum
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