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Updating Terrestrial Reference Frame using Sequential Computation Method
2023JTRF2020 is a recent contribution by NASA Jet Propulsion Laboratory to IERS as part of their effort to determine ITRF2020.  JTRF2020 is estimated daily using a sequential computational method (called "SREF") based on the SRIF and DMCS algorithms which are respective variants of the Kalman filter and smoother.
Toshio Mike Chin +4 more
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Terrestrial reference frame requirements within GGOS perspective
Journal of Geodynamics, 2005Abstract One of the main objectives of the promising and challenging IAG project GGOS (Global Geodetic Observing System) is the availability of a global and accurate Terrestrial Reference Frame for Earth Science applications, particularly Earth Rotation, Gravity Field and geophysics.
Z. Altamimi, C. Boucher, P. Willis
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Long-term stability of the terrestrial reference frame
Advances in Space Research, 2005Abstract For many Earth science applications, geodesy has the potential to provide a Terrestrial Reference Frame (TRF) to which are related valuable observations of parameters that govern the Earth system. In this paper, we review the current status of space geodesy techniques in terms of TRF implementation, focussing on technique specific strengths ...
Altamimi, Z. +2 more
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Conventional Terrestrial Reference Frames
1989Polar motion is the motion of the true celestial pole as defined by the theory of precession and nutation, e.g., of the Celestial Ephemeris Pole (CEP, see Chapter 8), with respect to the pole (third axis) of a conventionally selected earth “fixed” (terrestrial) reference frame (CTS). The latter is usually selected to be near the average position of the
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The International Terrestrial Reference Frame (ITRF2005)
2009The International Terrestrial Reference Frame (ITRF) is intended to be the standard reference for all geodetic and Earth science applications, ranging from national geodetic datums to Earth rotation, satellite navigation and geophysical interpretation of crustal deformation and tectonic plate motion.
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Time Evolution of the Terrestrial Reference Frame
2005This paper investigates the time evolution of the terrestrial reference frame (TRF). We analysed time series of site positions and datum parameters obtained from VLBI, SLR, GPS and DORIS solutions with respect to non-linear motions (e.g. jumps, seasonal signals) and systematic differences.
D. Angermann +4 more
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Construction of mm‐Level Terrestrial Reference Frame
Chinese Journal of Geophysics, 2009AbstractIt is noted in this paper that the latest international terrestrial reference frame ITRF2005 cannot satisfy the current need of monitoring mm‐level terrestrial dynamic change. The strategy of using the latest results of ITRF2005, SBL/GGFC (Special Bureau for Loading/Global Geophysical Fluids Center), GRACE and other satellites to construct mm ...
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CROPOS as Croatian Terrestrial Reference Frame
2015U studenom 2007. godine, predstavnici Delegacije Europske unije u Zagrebu, Ministarstvo financija Republike Hrvatske (MIFIN) i izvoditelj radova tvrtka Trimble Europe potpisuju ugovor o realizaciji nacionalnog pozicijskog sustava Republike Hrvatske s osiguranim financijskim sredstvima iz PHARE-2005 programa Europske unije (75%) te državnog proračuna ...
Marjanović, Marijan +2 more
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Combined NASA/ESA/JAXA Terrestrial Reference Frame
Abstract: Since 2005, Ka-band (32 GHz) has been used for differential VLBI for spacecraft navigation. This paper discusses building a Ka-band Terrestrial Reference Frame (TRF) to support these measurements. Challenges include the limited number of sites, instabilities from earthquakes, and tying to the geocenter.Jacobs, Christopher +6 more
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On the Adoption of a Terrestrial Reference Frame
International Astronomical Union Colloquium, 1980AbstractThe report of the IAU Working Group on Nutation endorsed by Commissions 4, 8, 19 and 31 at the 1979 General Assembly points out that “… the complete theory of the general nutational motion of the Earth about its center of mass may be described by the sum of two components, astronomical nutation, commonly referred to as nutation, which is ...
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