全站仪对GPS基线边长的检验

如今,GPS测绘技术发展日趋成熟,GPS的使用越来越普及。对GPS的测量成果,很多测绘工程人员常常简单地用全站仪比测来检验GPS成果,这种简单的对比方法并不能完全检验出GPS的精度。全站仪所提供的距离通常是平距或斜距,而GPS静态解算或动态测量中提供的坐标通常是经投影变形后的坐标。笔者就全站仪对GPS基线边长检验的理论、方法及所要注意的问题进行探讨。

GPS Baseline Length Test through Total Station Instrument

Nowadays,GPS surveying and mapping technique matures with the passing of time and the application thereof is becoming more and more widespread.Many surveying and mapping personnel simply uses total station to test the accuracy of GPS surveying and mapping result which per se is not enough to determine the accuracy of the GPS surveying and mapping.Distance obtained by total station is normally horizontal or slope distance,while the distance generated by GPS static resolution or dynamic surveying is distorted due to projection.This paper discusses the issues needed to be paid attention to in the process of checking GPS baseline length.