This paper also introduces concretely the construction of GPRS based real time difference system, and discusses the application of GPS to the investigation of land use changes.
具体介绍基于GPRS公网的实时差分系统的建设，并探讨GPS技术在土地变更调查中的应用。
This paper also introduces concretely the construction of GPRS based real time difference system, and discusses the application of GPS to the investigation of land use changes.
具体介绍基于GPRS公网的实时差分系统的建设，并探讨GPS技术在土地变更调查中的应用。
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