【摘 要】
：
数字高程模型（ＤｉｇｉｔａｌＥｌｅｖａｔｉｏｎＭｏｄｅｌ，简称ＤＥＭ），是表示空间连续起伏的数字模型。ＤＥＭ在测绘、遥感、地质、地理和军事等领域都具有广泛的应用前景，它已成为地理信息系统（ＧｅｏｇｒａｐｈｉｃａｌＩｎｆｏｒｍａｔｉｏｎＳｙｓｔｅｍ，简称ＧＩＳ）的重要研究课题之一。本文介绍了几种表示ＤＥＭ的常用方法及其数据结构，阐述了每种方法的特点。
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数字高程模型（ＤｉｇｉｔａｌＥｌｅｖａｔｉｏｎＭｏｄｅｌ，简称ＤＥＭ），是表示空间连续起伏的数字模型。ＤＥＭ在测绘、遥感、地质、地理和军事等领域都具有广泛的应用前景，它已成为地理信息系统（ＧｅｏｇｒａｐｈｉｃａｌＩｎｆｏｒｍａｔｉｏｎＳｙｓｔｅｍ，简称ＧＩＳ）的重要研究课题之一。本文介绍了几种表示ＤＥＭ的常用方法及其数据结构，阐述了每种方法的特点。
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