Comparison of Site Velocities Measured by VLBI and GPS in the Key Stone Project Network
Communications Research Laboratory has established four space geodetic observation sites in and around Tokyo, Japan under the Key Stone Project (KSP) [KOYAMA et al, 1997]. At each of the four sites (i.e. Koganei, Kashima, Miura, and Tateyama), an 11-m antenna VLBI system, a 75-cm telescope SLR system, and a dual-frequency geodetic GPS receiver system are collocated closely with each other. The relative positions of the three reference points are repeatedly measured by ground survey measurements. The comparisons of the site coordinates and velocities estimated from three different space geodetic techniques are considered to be quite important to understand error sources of each measurement technique and to evaluate consistency of the coordinates and velocities defined in a conventional terrestrial reference frame. In this paper, site velocities estimated from VLBI and GPS observations are compared.
KeywordsNorth American Plate VLBI Observation Space Geodetic Technique Communication Research Laboratory Site Velocity
Unable to display preview. Download preview PDF.
- Kondo T.,Kurihara N., Koyama Y., Sekido M.., Ichikawa R., Yoshino T., Amagai J., Sebata K., Furuya M., Takahashi Y., Kluchi H., Kaneko A. (1998), Evaluation of repeatability of baseline lengths in the VLBI network around the Tokyo metropolitan area, Geophys. Res. Let., Vol. 25, pp. 1047–1050CrossRefGoogle Scholar
- Koyama Y., Ichikawa R. Gotoh T., Sekido M., Kondo T., Kurihara N., Takahashi F., Amagai J., Otsubo T., Nojiri H., Sebata K., Kunimori H., Kiuchi H., Kaneko A., Takahashi Y., Hama S., Hanado Y., Imae M., Miki C, Hosokawa M., Yoshino T. (1997), VLBI, SLR and GPS observations in the Key Stone Project, proceedings of the LAG Scientific Assembly, Rio de Janeiro, Sep. 1997, pp. 394–399Google Scholar