The images above were acquired by the Advanced Synthetic Aperture Radar (ASAR) on the European Space Agency's Envisat satellite on March 11 and 16, 2011.
上面两幅图是欧洲空间组织环境卫星的先进合成孔径雷达(ASAR)于2011年3月11日和16日拍摄的照片。
The method research of Envisat-1 ASAR data preprocessing includes radiometric calibration, geometrical correction and speckle reduction.
主要的研究内容如下：(1)ASAR数据预处理方法研究，包括辐射定标、几何校正和斑点噪声的去除。
Asar is the general saying of the ancient folk instrumental music in the south of Xilingol league of Inner Mongolia Autonomous region and it is an ancient music variety.
阿斯尔系内蒙古锡林郭勒盟南部地区的一种民间器乐曲总称，是蒙古族一个古老乐种。
Asar is the general saying of the ancient folk instrumental music in the south of Xilingol league of Inner Mongolia Autonomous region and it is an ancient music variety.
阿斯尔系内蒙古锡林郭勒盟南部地区的一种民间器乐曲总称，是蒙古族一个古老乐种。
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