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一、前言遥感资料的使用者多直接利用兼容(CCT)磁带上的TM数字资料,对于单一时像、单幅、单波段的解译,可以得到满意的结果。然而,用多时像、多幅、多波段数据分析时,特别用波段比值消除亮度差异及用多时像资料确定地物连续变化过程时,直接使用CCT磁带数据往往不够精确。这是由于CCT磁带上记录的数据只是为计算机处理方便,而没有真实地表示地物的辐射、反射物理值。本文通过CCT磁带上记
I. Foreword Many users of remote sensing data directly use the TM digital data on compatible CCT tapes to obtain satisfactory results for single-time image, single-frame and single-band interpretation. However, when using multi-temporal image, multi-image and multi-band data analysis, especially when using the band ratio to eliminate the brightness difference and using multi-temporal image data to determine the continuous change of features, the direct use of CCT tape data is often not accurate enough. This is because the data recorded on the CCT tape is just for computer processing convenience, but does not truly represent the terrestrial radiation, reflecting the physical value. This article through the CCT tape recorded