【摘要】 首先介绍了利用正午前后极轨气象卫星4、2、1通道合成资料,进行监督分类,得到地表高温分布图的方法。然后结合江西省高分辨率耕地分布资料,分区计算出耕地高温干旱面积。另外,还采用图像镶嵌法和统计折算法,消除云的影响,以实现高温干旱的动态监测。更多还原

【Abstract】 To aquire the chart of LST during midday, it performed supervised clas sification by using the synthetic data of NOAA-AVHRR’s channel 4?2?1.Then it got the dimension of High Temperature and Drought’s area by analyzing Jiangxi’s far mland and subarea. Additionally, It achieved to dynamic monitor high temperature and drought by clearing off the influence of cloud using the way of picture mer ging and statistics.更多还原