SIRGAS-CON

SIRGAS-CON Coordinates            SIRGAS-CON Stations           Maps

While the two first SIRGAS realizations, SIRGAS95 and SIRGAS2000, are based on episodic GPS campaigns, the third and present SIRGAS realization is given by a network of continuously operating GNSS stations distributed over Latin America. This network, called SIRGAS-CON, is presently composed of about 400 stations and is routinely processed by the SIRGAS Analysis Centres to provide an accurate and up-to-date SIRGAS reference frame realization. Multi-year (cumulative) solutions providing positions and velocities for the SIRGAS-CON stations allow the maintenance of the SIRGAS reference frame between two releases of the ITRF. While a new ITRF release is published more or less every five years, the SIRGAS reference frame multi-year solutions are updated every one or two years. This is especially required, when strong earthquakes disable the use of ITRF coordinates in the region. The SIRGAS cumulative solutions include those models, standards, and strategies widely applied at the time in which the input normal equations were computed and their time spans are accordingly extended to include additional available weekly network solutions. To increase the reliability of the SIRGAS reference frame, the historical SIRGAS GNSS data are occasionally reprocessed to take into account new analysis standards and models following the International Earth Rotation and Reference Systems Service (IERS) and the International GNSS Service (IGS). The SIRGAS multi-year solutions released so far are:

DGF00P01

  • Aligned to ITRF97, epoch 2000.4
  • Time span: 1996-06-30 thru 2000-02-27
  • 31 stations
  • GPS observations
  • Relative phase centre corrections
  • This solution was included as the South American regional densification in the ITRF2000
  • More information in Seemüller W., Kaniuth K., Drewes H. (2002). Velocity estimates of IGS RNAAC SIRGAS stations. In: Drewes, H., A. Dodson, L.P. Fortes, L. Sánchez, P. Sandoval (Eds.): Vertical Reference Systems, IAG Symposia, Springer Verlag, Vol. 124: 7-10, doi: 10.1007/978-3-662-04683-8_2.

DGF01P01

  • Aligned to ITRF2000, epoch 2000.0
  • Time span: 1996-06-30 thru 2001-04-14
  • 48 stations
  • GPS observations
  • Relative phase centre corrections
  • More information in Seemüller W., Kaniuth K., Drewes H. (2002). Velocity estimates of IGS RNAAC SIRGAS stations. In: Drewes, H., A. Dodson, L.P. Fortes, L. Sánchez, P. Sandoval (Eds.): Vertical Reference Systems, IAG Symposia, Springer Verlag, Vol. 124: 7-10, doi: 10.1007/978-3-662-04683-8_2.

DGF01P02

  • Aligned to ITRF2000, 1998.4
  • Time span: 1996-06-30 thru 2001-10-20
  • 49 stations
  • GPS observations
  • Relative phase centre corrections
  • More information in Seemüller W., Drewes H. (2004). Annual Report 2001 of IGS RNAAC SIR. In: IGS 2001-2002 Technical Reports, JPL Publ. 04-017: 285-290. Available at https://kb.igs.org/hc/en-us/articles/202111876-Technical-Report-2001-2002.

DGF02P01

  • Aligned to ITRF2000, epoch 2000.0
  • Time span: 1996-06-30 thru 2002-07-31
  • 53 stations
  • GPS observations
  • Relative phase centre corrections
  • More information in DGFI (2002). Deutsches Geodätisches Forschungsinstitut (DGFI), Jahresbericht 2001/2002. DGFI, München. Available at https://mediatum.ub.tum.de/doc/1295822/1295822.pdf.

DGF04P01

  • Aligned to ITRF2000, epoch 2003.0
  • Time span: 1996-06-30 thru 2004-07-31
  • 69 stations
  • GPS observations
  • Relative phase centre corrections
  • More information in Seemüller W., Kaniuth K., Drewes H. (2004). Station positions and velocities of the IGS regional network for SIRGAS. DGFI Report No. 76. Munich. Available at http://www.sirgas.org/fileadmin/docs/DGFI_Report76.pdf.

DGF05P01

  • Aligned to ITRF2000, epoch 2004.0
  • Time span: 1996-06-30 thru 2005-09-17
  • 95 stations
  • GPS observations
  • Relative phase centre corrections
  • More information in Seemüller W. (2005). Report on new activities of IGS Regional Associate Analysis for SIRGAS (IGS RNAAC SIR). Presented at the SIRGAS 2005 General Meeting. Caracas, Venezuela. November. Available at http://www.sirgas.org/fileadmin/docs/Boletines/Bol09/21_Seemueller_IGS-RNAAC-SIR.pdf.

DGF06P01

  • Aligned to ITRF2000, epoch 2004.0
  • Time span: 1996-06-30 thru 2006-06-17
  • 94 stations
  • GPS observations
  • Relative phase centre corrections
  • More information Seemüller W. (2009). The Position and Velocity Solution DGF06P01 for SIRGAS. In: H. Drewes (Ed.):  Geodetic Reference Frames, IAG Symposia; Springer Verlag Vol. 134: 167-172, doi: 10.1007/978-3-642-00860-3_26.

DGF07P01

  • Aligned to IGS05, epoch 2004.5
  • Reprocessed weekly normal equations based on the first reprocessing campaign products (IG1) of the International GNSS Service and absolute phase centre corrections referring to the IGS05/IGb05 reference frame
  • Time span: 2001-12-30 thru 2002-12-28 plus 2005-01-04 thru 2005-05-29 plus 2006-01-01 thru 2007-10-27
  • 106 stations
  • GPS observations
  • More information in Seemüller W., Krügel M., Drewes H., Abolghasem A. (2007).The new position and velocity solution DGF07P01 of the IGS Regional Network Associate Analysis Center for SIRGAS (IGS RNAAC SIR). In: AGU Fall Meeting. San Francisco, USA, December 10 – 14. Available at http://www.sirgas.org/fileadmin/docs/WS_DGF07P01.pdf.

DGF08P01

  • Aligned to IGS05, epoch 2004.5
  • Time span: 2002-12-29 thru 2008-03-15
  • 126 stations
  • GPS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2002-12-20 to 2006-11-04 were reprocessed using the first reprocessing campaign products (IG1) of the International GNSS Service and absolute phase centre corrections referring to the IGS05/IGb05 reference frame
  • More information in Seemüller W., Krügel M., Sánchez L., Drewes H. (2008). The position and velocity solution DGF08P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 79. DGFI, Munich. Available at http://www.sirgas.org/fileadmin/docs/Boletines/Bol13/DGFI_Report_on_IGS-RNAAC_SIR_Solution_DGF08P01.pdf.

SIR09P01

  • Aligned to IGS05, 2005.0
  • Time span: 2000-01-02 thru 2009-01-03
  • 128 stations
  • GPS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2000-01-02 to 2006-11-04 were reprocessed using the first reprocessing campaign products (IG1) of the International GNSS Service and absolute phase centre corrections referring to the IGS05/IGb05 reference frame
  • More information in Seemüller W., Seitz M., Sánchez L., Drewes H. (2009). The position and velocity solution SIR09P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 85, Munich. Available at http://www.sirgas.org/fileadmin/docs/DGFI_Report85.pdf and 
  • Seemüller W., Sánchez L., Seitz M. (2011). The new Multi-year Position and Velocity Solution SIR09P01 of the IGS Regional Network Associate Analysis Centre (IGS RNAAC SIR). In: C. Pacino et al. (Eds.). IAG Scientific Assembly “Geodesy for Planet Earth”. IAG Symposia, Springer Verlag, Vol. 136: 675-680, doi: 10.1007/978-3-642-20338-1_110.

SIR10P01

  • Aligned to ITRF2008, epoch 2005.0
  • Time span: 2000-01-02 thru 2010-06-05
  • 183 stations
  • GPS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2000-01-02 to 2006-11-04 were reprocessed using the first reprocessing campaign products (IG1) of the International GNSS Service and absolute phase centre corrections referring to the IGS05/IGb05 reference frame
  • More information in Seemüller W., Sánchez L., Seitz M., Drewes H. (2010). The position and velocity solution SIR10P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 86, Munich. Available at http://www.sirgas.org/fileadmin/docs/SIR10P01_DGFI_Report_86.pdf.

SIR11P01

  • Aligned to ITRF2008, epoch 2005.0
  • Time span: 2000-01-02 thru 2011-04-16
  • 230 stations
  • GPS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2000-01-02 to 2006-11-04 were reprocessed using the first reprocessing campaign products (IG1) of the International GNSS Service and absolute phase centre corrections referring to the IGS05/IGb05 reference frame
  • More information in Sánchez L., Seitz M. (2011): SIRGAS reference frame realization SIR11P01. Deutsches Geodätisches Forschungsinstitut, München, doi: 10.1594/PANGAEA.835100, supplement to:
  • Sánchez L., Seitz M. (2011): Recent activities of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR) - Report for the SIRGAS 2011 General Meeting August 8 - 10, 2011. Heredia, Costa Rica. DGFI Report, 87, 48 pp, hdl: 10013/epic.43995.d001.

SIR13P01

  • Aligned to IGb08, epoch 2012.0
  • Time span: 2010-04-18 thru 2013-06-15
  • 108 stations
  • GPS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2010-04-18 to 2011-04-17 were reprocessed using the second reprocessing campaign products (IG2) of the International GNSS Service and absolute phase centre corrections referring to the IGS08 reference frame
  • More information in Sánchez L., Drewes H., Brunini C., Mackern M.V., Martínez-Díaz W. (2016). SIRGAS core network stability. In: Rizos C., Willis P. (Eds.) IAG 150 Years, IAG Symposia 143, 183-190, doi: 10.1007/1345_2015_143.

SIR14P01

  • Aligned to IGb08, epoch 2013.0
  • Time span: 2010-04-18 thru 2014-07-26
  • 242 stations
  • GPS and GLONASS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2010-04-18 to 2011-04-17 were reprocessed using the second reprocessing campaign products (IG2) of the International GNSS Service and absolute phase centre corrections referring to the IGS08 reference frame
  • More information in Sánchez L. (2015). SIRGAS Regional Network Associate Analysis Center, Technical Report 2014. Jean Y. and Dach R. (Eds.) International GNSS Service Technical Report 2014, 101-110, IGS Central Bureau. Available at https://kb.igs.org/hc/en-us/articles/206257267-Technical-Report-2014.

SIR15P01

  • Aligned to IGb08, epoch 2013.0
  • Time span: 2010-03-14 thru 2015-04-11
  • 303 stations
  • GPS and GLONASS observations
  • Absolute phase centre corrections
  • Weekly normal equations from 2010-03-14 to 2011-04-17 were reprocessed using the second reprocessing campaign products (IG2) of the International GNSS Service and absolute phase centre corrections referring to the IGS08 reference frame
  • More information in Sánchez L., Drewes H. (2016): SIR15P01: Multiyear solution for the SIRGAS Reference Frame, open access, doi: 10.1594/PANGAEA.862536, in supplement to: Sánchez L. Drewes H. (2016): Crustal deformation and surface kinematics after the 2010 earthquakes in Latin America. Journal of Geodynamics, doi: 10.1016/j.jog.2016.06.005.

SIR17P01

  • Aligned to IGS14, epoch 2015.0
  • Time span: 2011-04-17 thru 2017-01-28
  • 345 stations
  • GPS and GLONASS observations
  • Absolute phase centre corrections
  • This cumulative solution has been made consistent with the phase centre corrections referring to the IGS14 (model igs14.atx)
  • This is achieved by applying the station-specific estimates published by the IGS for the IGS stations and by inferring the correction to the regional SIRGAS stations according to the latitude-dependent phase centre correction models also recommended by the IGS
  • More information in Sánchez L., Drewes H. (2020): SIRGAS 2017 reference frame realization SIR17P01, open access, doi 10.1594/PANGAEA.912349, in supplement to: Sánchez L., Drewes H. (2020). Geodetic monitoring of the variable surface deformation in Latin America. International Association of Geodesy Symposia Series, Vol 152, doi: 10.1007/1345_2020_91.

 

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