【摘要】 自美国前副总统戈尔提出“数字地球”概念以来,许多国家都在探讨如何实施“数字地球”战略。实施“数字地球”战略,对测绘业信息化的发展无疑具有特别重要的意义。更多还原

【Abstract】 Since Al Gore, the former U. S. vice - president,proposed the concept of " Digital Earth" , many countries have been discussing how to cany out their own "Digital Earth" strategies . Undoubtedly,carrying out "Digital Earth" strategies has very important significance on the informationization of surveying and mapping.更多还原