The paper analyzes ground survey of flood and low water in hydrological surveystation.
对水文测站的洪水与枯水巡视进行了可行性分析。
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In this paper, the error of light-electric range finder in highway curve survey is analysed. The control distance between two surveystation is presented so as to control the precision.
Finally, compare the forwarding and inversion on land with it in tunnel, and find that the noise is suppressed and the resolution is enhanced with setting the surveystation underground.