| 用NOAA气象卫星AVHRR的定量资料计算冬小麦种植面积的两种方法 |
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| 引用本文： | 肖乾广.用NOAA气象卫星AVHRR的定量资料计算冬小麦种植面积的两种方法[J].遥感学报,1989(3). |
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| 作者姓名： | 肖乾广 |
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| 作者单位： | 国家气象局卫星气象中心 |
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| 摘 要： | 本文提出了用NOAA气象卫星AVHRR的定量资料计算冬小麦种植面积的方法,即绿度指数法和单通道法。绿度指数法是根据冬小麦在特定生育期内绿度值基本上保持为常数的特点,用几块巳知样地的种植面积,推算整体种植面积;单通道法是只使用AVHRR第二通道的反照率来计算冬小麦种植面积。这两种方法的优点在于不需考虑大气削弱的订正处理问题,从而使计算得以简化。
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| 关 键 词： | 绿度指数 冬小麦面积 麦土比 单通道 数字图像 |
Two methods in Calculating winter wheat area with NOAA/AVHRR Digital Data |
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| Xiao Qianguang.Two methods in Calculating winter wheat area with NOAA/AVHRR Digital Data[J].Journal of Remote Sensing,1989(3). |
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| Authors: | Xiao Qianguang |
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| Abstract: | The green index method and the single channel method are presented in this papr to calculate the Area of winter wheat with the NOAA/AVHRR digital data. The first one is featured by the use of the characteristics that the green index of winter wheat in a peculiar growth period is basically a constant. By selecting such a period, the total Area of winter wheat can be derivde from the area of Several sample segment. The second one uses only reflectivity of the secomd channel of AVHRR to calculate the winter wheat area. The advantage of both methods lies in the unnecessary for atmospheric attenuation correction of the vegetation index and reflectivity. |
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| Keywords: | green index winter wheat area wheat-baresoil ratio single channel digital image |
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