| Title |
Transportation Engineering, Highway Engineering, Construction Management, Railroad Engineering, Surveying and Geo-Spatial Information Engineering : Regional and Urban Planning ; A Study on the Precise Differential GPS Positioning by GPS Permanent Referenc |
| Keywords |
PDGPS ; VRS ; multiple GPS reference station network ; Web ; 정밀상대측위 ; 가상관측값 ; GPS 상시관측망 |