A Study of Using Global Positioning System and 3D Laser Scanner on Deformation Monitoring

• Main Authors: Ping-Jung Chih, 支秉榮
• Other Authors: Chun-Sung Chen
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/81547755560844654654

碩士 === 國立交通大學 === 土木工程系所 === 93 === The precision of the RTK is 10㎜ ±2ppm for the horizontal and 20㎜ ±2ppm for the vertical distances. However, these precisions are limited when the baseline distance is shorter than 10㎞. In many actual conditions , the distance of a baseline is much more longer than 10㎞, may be 30, 50, even it 70㎞. Therefore, the precision of a long baseline of RTK is a hot study topic for RTK users. This paper aims to study the precision of a baseline whose distance is more than 30㎞. Using more than three reference stations, a virtual reference station （VRS）can be produced for RTK surveying . From the results, the precision of the VRS is better than traditional RTK which has only a single reference station.