Local ties
Local survey metadata form
In the scope of the activity of the IAG working group WG 1.2.1 Methodology for surveying geodetic instrument reference points (joint with IERS), co-location site survey and survey product metadata are being collected.
Please fill in the following form when sending any new SINEX survey file to the ITRF Product Center. If a correction needs to be made to a metadata file that has already been submitted, please complete this form again and submit it for correction. Email address: itrf(at)ign.fr
Note that filled information is planned to be available online to the users of the survey SINEX files.
Map of available local ties
Co-location survey: online reports
- Le Lamentin, 2025 survey, April 2025
- Washington, 2024 survey, March 2024 Link to other products of this survey
- Grasse, 2023 survey, February 2023
- Santa Cruz, 2023 survey, June 2023
- Kauai, 2023 survey, May 2023
- Koganei, 2022 survey, August 2022
- Malé, Maldives, 2021 survey, October 2021
- Brandal, Ny-Alesund Svalbard, 2019 and 2020 surveys, June 2021
- Stafford (VA,USA) co-location survey at Midway Naval Research Laboratory's (NRL) Optical Test Facility (OTF), June 2021 Link to other products of this survey.
- Hartebeesthoek 2014 co-location survey: reprocessing, March 2021
- Sejong (Republic of Korea), October 2020
- Höfn, September 2020
- Mauna Kea, January 2020
- Table mountain (Colorado, USA) co-location survey at Table Mountain Geophysical Observatory, July 2019
- Stafford (VA,USA) co-location survey at Midway Naval Research Laboratory's (NRL) Optical Test Facility (OTF), June 2019
- St. Croix, May 2017
- Chatham Island, June 2016
- Cibinong, October 2015
- Ascension, July 2015
- Warkworth, March 2015
- Hartebeesthoek, February 2014
- Grasse, August 2013
- Fort Davis, February 2013
- Le Lamentin, July 2013
- Arequipa, January 2013
- Warkworth, December 2012
- Jiufeng, October 2012
- Washington DC, August 2012
- Metsahovi, July 2012
- Tristan-Da-Cunha, June 2012
- Futuna, May 2012
- Riyad, February 2012
- Simeiz-katzively, 1994, 2004, 2008 & 2011
- Rikitea, July 2011
- Papeete, July 2011
- Brewster, July 2011
- Rothera, February 2011
- Kourou, February 2011
- Dionysos, February 2011
- Grasse, August 2009
- Papeete, September 2008
- Herstmonceux, April 2008
- Tidbinbilla, November 2007
- Sheshan, December 2005
- Hartebeesthoek, June 2005
- Wuhan, January 2005
Other reports and products
- NOAA / National Geodetic Survey
- Local Ties Geodetic Technical Reports available at Geoscience Australia
- Land information New Zealand
Local ties used in ITRF combination
- ITRF2020
- ITRF2014
- ITRF2008
- ITRF2005
Empirical variance factor for each one of the individual local tie solutions (SINEX files) is estimated following the procedure described in Altamimi et al. (2002)
A list of local tie vectors, together with their uncertainties as extracted from the re-scaled SINEX files, is also available here
In addition, all the post-fit residuals of the ITRF2005 combination are listed here. - ITRF2000