CORE: Continuous, High-Accuracy Earth Orientation Measurements.

Details CORE: Continuous, High-Accuracy Earth Orientation Measurements. CORE: Continuous, High-Accuracy Earth Orientation Measurements.

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999evga.conf..166m&link_type=abstract

13th Working Meeting on European VLBI for Geodesy and Astrometry, p. 166 - 171

Astronomy and Astrophysics

Astronomy

Scientific paper

The international geodetic VLBI community will inaugurate during 1999 a new phase of the program called CORE (Continuous Observations of the Rotation of the Earth). The capabilities of the new Mark IV correlators, available as of mid-1999, will enable greater sensitivity, more frequent observing sessions, and improved system throughput. The CORE program, begun in 1996 with the CONT96 campaign, has gradually increased the number of observing sessions per week. As of early 1999 the average is 2.5 24-hour sessions per week (including the NEOS sessions). This will expand to 3.5 sessions per week beginning in the second half of 1999, with the goal of continuous observing by the year 2001. The concept of CORE requires that Earth orientation measurements will be made with several networks, each operating on a different day. It is therefore important to determine whether there are systematic differences between EOP derived from different networks. We have been acquiring data from different networks observing on the same day or on sequential days in order to validate this concept. Recent analysis comparing data from CORE-A, CORE-B, and NEOS sessions shows that there are systematic differences in EOP, which are now under active investigation.

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