JTRF Solutions

JTRF2014 Solution

About the JTRF2014 Solution

JTRF2014 is the Terrestrial Reference Frame (TRF) the Jet Propulsion Laboratory constructed by combining space geodetic inputs spanning 1979-2014 from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), Global Navigation Satellite Systems (GNSS) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) submitted for the determination of ITRF2014. Created through a Kalman filter and RTS smoother assimilating station position observations, Earth Orientation Parameters (EOPs), and local ties, JTRF2014 is a sub-secular, time series-based TRF whose origin is at the quasi instantaneous Center of Mass (CM) of the Earth as sensed by SLR and whose scale is determined by the quasi instantaneous VLBI and SLR scales.

Learn More about JTRF2014
IDS WRMS Time Series - Edited Input SINEX Files
GNSS Stations
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VLBI Stations
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SLR Stations
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DORIS Stations
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Global space geodetic network adopted in the JTRF2014 combination
Global space geodetic network adopted in the JTRF2014 combination. Gold dots identify the GNSS sites, red circles represent VLBI sites, blue circles are SLR sites, and white circles denote DORIS sites. The global network comprises 671 GNSS stations, 71 VLBI stations, 71 SLR stations, and 159 DORIS stations. Polygons drawn in red in the map represent tectonic plate boundaries.

Stations

JTRF2014 consists of a set of position time series of 972 stations at weekly intervals and daily combined EOPs along with their full covariance matrix. The global network is characterized by 590 sites, 453 of which are located in the Northern hemisphere with 137 being located in the Southern hemisphere.

View ALL Stations
Global Navigation Satellite Systems (GNSS) Antenna
View GNSS Stations
Very-long-baseline interferometry (VLBI) Radio Telescope
View VLBI Stations
Satellite Laser Ranging (SLR) Station
View SLR Stations
Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) Antenna
View DORIS Stations

References

Abbondanza, C., T. M. Chin, R. S. Gross, M. B. Heflin, J. W. Parker, B. S. Soja, T. van Dam, and X. Wu (2017). JTRF2014, the JPL Kalman filter and smoother realization of the International Terrestrial Reference System, J. Geophys. Res., 122(10), 8474–8510, doi:10.1002/2017JB014360, 2017.

Abbondanza, C., T. M. Chin, R. S. Gross, M. B. Heflin, J. W. Parker, B. S. Soja, and X. Wu (2020). A sequential estimation approach to terrestrial reference frame determination, Adv. Space Res., 65(4), 1235–1249, doi:10.1016/j.asr.2019.11.016.

Abbondanza, C., T. M. Chin, R. S. Gross, M. B. Heflin, J. W. Parker, B. S. Soja, T. van Dam, and X. Wu (2020). JTRF2014: Analysis, results, and comparisons to ITRF2014 and DTRF2014, in IERS Technical Note 40: Description and Evaluation of DTRF2014, JTRF2014, and ITRF29014, edited by Z. Altamimi and W. R. Dick, pp. 17–69, Bundesamts für Kartographie und Geodäsie, Frankfurt am Main, Germany

Citation

If you use JTRF2014 in your research, please acknowledge it in your publications by citing:

Abbondanza, C., T. M. Chin, R. S. Gross, M. B. Heflin, J. W. Parker, B. S. Soja, T. van Dam, and X. Wu (2017). JTRF2014, the JPL Kalman filter and smoother realization of the International Terrestrial Reference System, J. Geophys. Res., 122(10), 8474–8510, doi:10.1002/2017JB014360.

Contact

Richard Gross
4800 Oak Grove Drive
Pasadena, CA 91109
United States of America
Email: richard.gross@jpl.nasa.gov

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