引言遥感技术是利用遥远目标对电磁波的反射、散射、吸收和辐射等机理,不直接接触被研究(?)体而感测和截获来自物体的特征信息,并将这些信息传输和处理,从中提取反映物体物理特性的有用信号,经判读、分类达到识别物体,了解现象及其变化的目的。通常认为,遥感技术包括遥感设备、信息传输和信息(数据、图象)处理、判读设备三 Introduction Remote sensing technology uses the mechanism of reflection, scattering, absorption and radiation of electromagnetic waves by distant targets to sense and capture the characteristic information from the object without direct contact with the studied body. The remote sensing technology transmits and processes the extracted information Useful signals that reflect the physical properties of an object are interpreted, categorized to identify objects, and to understand the purpose of the phenomenon and its changes. It is generally accepted that remote sensing technologies include remote sensing equipment, information transmission and information (data, image) processing, interpretation equipment three