科研之友
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摘要
In this study the theoretical and practical approach of an optimal geodetic reference frame realization is described in detail. The Hellenic area due to its strong geodynamic behavior creates a rather inhomogeneous velocity field. This issue plays a critical role in stable and long-term geodetic datum. The methodology of the Minimization of the Kinetic Energy Criterion (MKEC) is defined and analyzed on a permanent GNSS network consisting of 151 stations. The site velocity values were estimated from seven years of continuous data. The application formula shows that the kinematic energy is minimized more than 60 percent in two different approaches for the International Terrestrial Reference Frame and the European Terrestrial Reference System 1998 (ETRS89). In addition, the realization of the ETRS89 approach in Greece is not offering any significant advantage. However, we proposed a new strategy, which minimizes the total kinetic energy and it is found effective in local areas with strong geodynamic activity like the Greece case.
- 出版日期2017
