| タイトル | Precision geodesy using the Mark-III very-long-baseline interferometer system |
| 著者（英） | Elgered, G.; Clark, T. A.; Herring, T. A.; Corey, B. E.; Davis, J. L. |
| 著者所属（英） | Chalmers Univ. of Technology|Northeast Radio Observatory Corp.|NASA Goddard Space Flight Center|Harvard-Smithsonian Center for Astrophysics |
| 発行日 | 1985-07-01 |
| 言語 | eng |
| 内容記述 | Very-long-baseline interferometry (VLBI) has been used to make precise measurements of the vector separation between widely separated antennas. The system for acquiring and processing VLBI data known as Mark-III is described. Tests of the system show it to have millimeter-level accuracy on short baselines; measurements of baselines longer than a few hundred kilometers suggest that accuracy is limited by the uncertainty in the calibration of tropospheric path delay to the level of a few centimeters. VLBI experiments conducted between 1976 and 1983 have demonstrated the stability of the North American plate by showing that there is no change in the distance between eastern California and Massachusetts at the level of a few millimeters per year or greater. Experiments made from 1980 to 1984 indicate that the distance from Massachusetts to Sweden is increasing by 1.7 + or - 1 cm/year where the quoted standard deviation includes the estimated effects of systematic errors. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 85A42460 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/390366 |
