Interferometric Synthetic Aperture Radar is an effective technique to get Digital Elevation Model and orthophoto map.
干涉合成孔径雷达是获取场景数字高程模型和正射影像图的有效技术之一。
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Finally, cropland levels are divided according to frequency distribution of synthetic index values of assessment units and the map of results are obtained.
多因子综合指数法计算定级指数后采用总分值频率直方图划分农用地级别，并实现定级结果图的自动输出。
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To complete the synthetic information mineral resources prediction, it needs to establish independent and dependent map level groups on GIS platform and use related mathematic model.