简要介绍了全球定位系统GPS的特点及工作原理，对GPS在公路定测中的作业模式作了具体说明，并结合实例阐述了GPS控制网设计、外业观测及内业计算三方面操作要点，指出GPS在公路工程中具有广阔发展前景。%With a brief introduction on the characteristics and working principles of GPS, it specifically describes the working mode of GPS in highway measuring. Combining with actual examples, it illustrates operation points of GPS controlling net design, outdoor observation and indoor calculation, and then points out the development prospect of GPS in highway engineering.
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