Heavy spring snows prevented their passage but had they been able to traverse the divide, the party would have been the first organized survey to enter the Yellowstone region.[16]
This paper discusses briefly survey method and basic principle of RTK. The precision and result of RTK and urban First-order traversesurvey is compared and analyzed.
The techniques of measurement and data-processing theory was discussed in detail on the basis of precision traverse control network measurement of the long tunnel holing-through survey.