| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 95 === 3D Laser Scanner and Virtual Reference Station RTK(also known as VRS)are two different surveying technologies based on different principle and approches, the advantage of their combination is rapaid and accurate.So the conventional surveying approch in many applications can be replaced by it, it is our hope to come up with an optimal combination in the adjustment in terms of accuracy.
In this research we increased the backsights from 3 to 10 points.and observed 5 sets of VRS,1 set of static GPS,5 sets of 3D LASER. we considered the Static GPS as the standard observation set,and compared it with the VRS’s coordinates after adjustment.The RMS and the range of differences are taken as the indicator of accuracy .We implemented the adjustment in 6 ways, due to the error existing in the height,so the 3D approach dosen＇t fulfill our expectation.
However in the 2D approach, most of the differences between the VRS and the Static GPS all reduced within the range of ±15mm,which
concured what we expected.
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