GPS高程在小面积工程测绘中的应用

Application of the GPS elevation in the small area engineering survey

结合实例,介绍了GPS高程在小面积工程测绘中的应用,分析了GPS高差精度,结果表明,10 km2范围内GPS高差完全可以取代四等三角高差及等外水准高差而应用于施工当中。

Combined with the example, the author introduces the application of the GPS elevation in the small area engineering survey, analyzes the precision of GPS height difference, the results show that the GPS height difference in the range of 10 km^2 can be used to replace the fourth-grade trigonometrical height difference and the substandard level elevation difference in the construction.