Principles and application of GPS GPS原理及其应用
This paper expounds the surveying principles of GPS (PPK), and probes into the application of GPS (PPK) surveying and positioning in the mine surveying.
简述了G PS（ PPK）的测量原理，探讨了差分GPS（PPK）测量定位在矿山测量中的应用。
Base on the insight on the principles of GPS and the problems in the processing of teaching, the Experiment System of GPS principle was designed and developed.
基于对GPS相关原理的深入了解和GPS教学过程中遇到的诸多问题，设计并开发了GPS原理实验系统。
This paper introduces the advantages and working principles of GPS, elaborates the use methods and operation steps of GPS in forestry investigation, and probes into some matters needing attention.
简要介绍了GPS的优点及其工作原理，对GPS在林业调查中的使用方法及操作步骤进行了详细的描述，并探讨了其注意事项。
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