The formation, basic theory and technical system of Geomatics are discussed, and the key techniques and applications of Digital Earth are also discussed.
讨论了地球空间信息学的形成、理论基础和技术体系，以及数字地球的关键技术和应用。
The formation, basic theory and technical system of Geomatics are discussed, and the key techniques and applications of Digital Earth are also discussed.
讨论了地球空间信息学的形成、理论基础和技术体系，以及数字地球的关键技术和应用。
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