A Study of GPS Calibration System

• Main Authors: Wei-Chung Su, 蘇偉忠
• Other Authors: Ching-Biao Chen
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/40803779262914237593

碩士 === 逢甲大學 === 土木工程所 === 93 === With the widespread using of Global Positioning System (GPS) instrument, a need has arisen for their calibration. In this paper, some optimum methods were discussed about the establishment and use of the calibration basenet, mathematical models, analysis and discussions for observed data were included for reference in order to establish a calibration basenet for GPS instruments. The uncertainties of the calibration system are according to the “Guide to the Expression of Uncertainty in Measurement published by the international Standards Organization (ISO). The calibration capability of this calibration system is as follows: 1.Static Relative Positioning (one-dimensional) in the level of Condfidence 95%, we find the Expanded Uncertainty is 11.79mm+2.09ppm*D. 2.Static Relative Positioning (three-dimensional) in the level of Condfidence 95%, we find the Expanded Uncertainty is 15.71mm+2.79ppm*D. 3.Single Point Positioning Coordinates of the pillarsFCUA(one-dimensional / three-dimensional)in the level of Condfidence 95%, we find the Expanded Uncertainty is 34.41/47.57. 4.Single Point Positioning Coordinates of the pillarsFCUB(one-dimensional / three-dimensional)in the level of Condfidence 95%, we find the Expanded Uncertainty is 35.77/49.55.