Metsähovi ITRF co-location site survey

Transcription

1 SERVICE DE GEODESIE ET NIVELLEMENT Thomas Donal Metsähovi ITRF co-location site survey July 212 RT/G 25 N archive DIFFUSION OUVERTE Date de création 8/7/215 N de version 1, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

2 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 2/7 Mots-clé Local survey ; ITRF ; DORIS ; GNSS ; REGINA ; Metsähovi ; Finland Résumé La réalisation ITRF28 (dernière en date) de l International Terrestrial Reference System calculée par le Laboratoire de Recherche en Géodésie (LAREG) de l est le résultat de la combinaison des référentiels terrestres issus des quatre techniques de géodésie spatiale (c est à dire DORIS, GNSS, SLR et VLBI). Pour réaliser un repère unique, un moyen consiste à ajouter dans la combinaison les résultats de rattachements sur des sites co-localisés. L'observatoire géodésique de Metsähovi (Finlande) dispose d'une station DORIS, d'une station VLBI et d'une station GNSS permanente, intégrée dans le réseau de l IGS. Le présent rapport décrit le rattachement de précision réalisé sur ce site en juillet 212 suite à l'installation d'une station GNSS REGINA et de la rénovation de la station DORIS. The ITRF28 (latest) realization of the International Terrestrial Reference System computed by the Laboratoire de Recherche en Géodésie (LAREG) at is the result of the combination of reference frame from four space geodesy techniques (i.e. DORIS, GNSS, SLR and VLBI). One way to realize one common frame consists in adding results in the combination from local ties at co-location sites. A VLBI station, a DORIS station and a permanent GNSS station, included in IGS network, are installed at the Metsähovi Research Station (Finland). This report describes the local tie survey carried out at Metsähovi in July 212, following the installation of the stations. Matériel Système d exploitation Logiciel Windows 7 Professionnel LibreOffice Writer Validation Fonction Nom Visa Commanditaire Chef de département RSI Bruno Garayt 14/1/215 - signe Rédacteur Technicien d'études Thomas Donal 25/1/216 - signé Lecteur Expert DORIS Jérôme Saunier 8/1/215 - signé Approbateur Chef de service Thierry Person 27/1/215 - signé Vérificateur Responsable qualité Bruno Garayt 28/1/216 - signé, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

3 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 3/7 Diffusion Organisme / Fonction / Nom Numérique Papier / R Directeur / Philippe Gerbe oui - / R Directeur adjoint / Didier Moisset oui - / C / SP / CKP Chargé MO géodésie / François Becirspahic oui - / DRE/ SMGI / CDOS oui - / DRE / SRIG / LAREG Chef du CDoS / Anne Berry Chef de laboratoire / Olivier Jamet oui - / DRE / DE / TS Chef de département / Serge Botton oui - / R / SGN Chef de service / Thierry Person oui - / R / SGN Responsable qualité / Bruno Garayt oui - / R / SGN / PMC Responsable documentation / Xavier della Chiesa non 3 / R / SGN / PMT Responsable produits / François L Ecu oui - / R / SGN Chefs de départements oui - / R / SGN / PMM Thomas Donal oui 1 / R / SGN / PMM Jérôme Saunier oui - / R / SGN / PMM Charles Velut oui - / R / SGN / PMM Jean-Claude Poyard oui - / DRE / SRIG / LAREG Zuheir Altamimi oui 1 CNES / DCT / ME / NC Françoise Girod oui - CNES / DCT / ME / NC Jean-Paul Cardaliaguet oui - CNES / DCT / ME / OT Thierry Guinle oui - CNES / DCT / ME / OT Jean-Marc Walter oui 1 CNES / DCT / ME / OT François Boldo oui 1 FGI Markku Poutanen oui - FGI Jyri Näränen oui - / R / SGN / PMM Archives DORIS oui 1 CNES regina.operation@cnes.fr oui - projet-regina@ign.fr oui - doris@ign.fr oui - itrf.ign.fr oui -, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

4 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 4/7 Table of contents 1. Introduction Context Glossary Co-location site description Site description Co-located points GNSS station METG New DORIS station Former DORIS station METB GNSS station METS Global views Site sketches Site pictures Site Survey description Organization Equipment GNSS REGINA permanent station Surveying instruments Surveying accessories Polygon network Surveying method Permanent stations reference point GNSS observations Weather data Computation Determination of METG antenna reference point coordinates in IGb Coordinates expressed in IGb8 at epoch Local GNSS network Global adjustment Results Station name translation table Adjusted coordinates and confidence regions Vectors between points of interest Appendixes DORIS station site log «METG» GNSS station site log «METS» GNSS station site log Bernese GNSS process...44 Daily processing steps...44 Session Combination...45 Coordinates expressed in IGb8 at epoch Leica Geo Office report file Adjustment input file Adjustement output file Metsähovi SINEX file...7, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

5 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 5/7 1. Introduction 1.1. Context The International Terrestrial Reference Frame (ITRF) is the result of a combination of different terrestrial reference frames provided by the four space geodetic techniques -Very Long Baseline Interferometry (VLBI) -Satellite Laser Ranging (SLR) -Global Navigation Satellite System (GNSS) -Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) To perform this combination between independent reference frames, it is necessary to have some co-location sites where the various techniques are operating, from which tie vectors between their reference points have been surveyed in three dimensions. According to GGOS objectives, a millimeter accuracy is required for the local ties. In charge of the REGINA network deployment and the DORIS network maintenance, carries out local tie surveys as far as a REGINA or DORIS station is co-located, with the following purpose assign coordinates to new instruments reference points; provide tie vectors between instruments reference points (i.e. DORIS, GNSS, SLR, VLBI, tide gauge); This document presents the local tie survey performed at Metsähovi (Finland), which took place in July 212 within the framework of the REGINA station installation and the DORIS station renovation Glossary ARP Antenna Reference Point CNES Centre National d Études Spatiales (France) DOMES Directory of MERIT Sites DORIS Détermination d'orbite et Radio positionnement Intégré par Satellite FGI Finnish Geospatial Research Institute GGOS Global Geodetic Observing System GNSS Global Navigation Satellite System IDS International DORIS IERS International Earth Rotation and Reference Systems Institut National de l'information Géographique et Forestière (France) IGS International GNSS REGINA REseau Gnss pour l'igs et la NAvigation SINEX Solution INdependent Exchange VLBI Very Long Baseline Interferometry, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

6 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 6/7 Acknowledgements On behalf of CNES and, we would like to acknowledge Prof. Markku Poutanen, director of Geodesy and Geodynamics department from FGI for the welcome accorded to us. Our special thanks to Jyri Näränen, researcher from Geodesy and Geodynamics department, who has supplied a efficient assistance to ensure the success of the mission. FGI has been particularly hospitable. Thank you to them for their logistical support, efficiency, availability and good mood. Jean-Claude Poyard (), Jyri Näränen (FGI), Thomas Donal ()., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

7 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 7/7 2. Co-location site description 2.1. Site description The local ties survey is performed in Finland at Metsähovi, about thirty kilometers west of Helsinki. Geoportail The site is located at the research station managed by the Finnish Geospatial Research Institute, the research and expert Finnish institute that performs research and development for spatial data infrastructures., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

8 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 8/7 Address of FGI, headquarters National Land Survey of Finland Finnish Geospatial Research Institute FGI Paikkatietokeskus MML Geodeetinrinne 2 FI-243 Masala FINLAND Closer view Geoportail , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

9 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 9/7 The Metsähovi Research Station is divided into two separate sites within 3 km of one another -the main site hosting all major space geodetic observing techniques GNSS, SLR and VLBI, gravimeter and fundamental points for the national Finland reference system. -the secondary site with DORIS and GNSS stations close to a photogrammetric test field in Sjökulla. Secondary site azimuth 35 The topometric local tie survey was performed between REGINA GNSS station and DORIS station. In addition, GNSS observations have been carried out to tie the permanent REGINA GNSS station to the permanent GNSS station located at Metsähovi Research Station, part of IGS network., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

10 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 1/ Co-located points GNSS station METG A permanent GNSS station named METG has been installed during the campaign. This station is dedicated to the GNSS real time Network for IGS and Navigation (REGINA) project. The antenna is a Trimble TRM 598. type with SCIS radome. This antenna is mounted on top of a 2 m high stainless steel rigid structure and anchored into a concrete pad. The reference point is a brass mark embedded into the concrete âd located vertically down from the BPA (Bottom of the Pre-Amp). Acronym METG DOMES number 153M2 General view Close-up view (reference point) Description antenna monument and reference point. Antenna height is 2,352 m. See sitelog in appendix 6.2. The reference mark is the former VLBI mark C 76. For further information, refer to the IGS website 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

11 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 11/7 New DORIS station On the spot since June 1998, the DORIS station has been renovated during the campaign. The current antenna with the acronym is installed on a 2 m high stainless steel rigid structure fixed on a concrete block 1.6m deep. A domed brass marker is embedded into the concrete block at the antenna support base. Acronym DOMES number 153S16 General view Close-up view (reference point) Description DORIS antenna and reference point. See sitelog in appendix 6.1. Acronym DORIS marker DOMES number 153M6 General view Close-up view Description domed brass marker embedded on top of the concrete block in the alignment with the DORIS antenna. For further details, refer to the IDS website 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

12 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 12/7 Former DORIS station METB Initially set up on October 2, DORIS station METB was removed during the campaign in order to install the new DORIS station on the same concrete block Acronym METB DOMES number 153S15 General view Close-up view (reference point) GNSS station METS The GNSS station «METS», part of IGS network, is located about 3 kilometres south from METG and, at Metsähovi Research Station. Acronym METS DOMES number 153S11 General view Description antenna is installed on top of a steel grid mast (21m high). Antenna height is, m. See sitelog in appendix 6.3., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

13 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 13/ Global views Site sketches The photogrammetric test field co-located points. The antennas and the shelter hosting instrumentations. Illustration azimuth 3, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

14 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 14/7 Site pictures From left to right DORIS antenna, shelter, GNSS antenna. Azimut 34 From left to right GNSS antenna, shelter, DORIS antenna. Azimut 2, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

15 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 15/7 3. Site Survey description 3.1. Organization The site survey took place during the DORIS station renovation and REGINA station installation from June 27th to July 3rd, 212 and performed by Thomas Donal () and Jean-Claude Poyard (). The topometric surveying operations were done on July 2nd, Equipment All the surveying instruments used for this project belong to, except GNSS REGINA instrumentations which belong to CNES GNSS REGINA permanent station Type Model Quantity GNSS antenna Trimble Choke Ring TRM GNSS receiver Trimble NetR Surveying instruments The Leica total station used for the site survey, is yearly calibrated at 's calibration unit. It has a standard deviation of.3 mgon for angles and 1mm ppm for distances. Type Model Quantity GNSS receiver Leica GX123GG 2 GNSS antenna Leica AX122GG 2 Total station Leica TCRA , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

16 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 16/ Surveying accessories Four Leica accurate reflectors calibrated with the total station were used to determine distances. Type Model Quantity Reflector Leica GPH1P 4 Mini reflector Leica GMP11 1 Carrier with optical plummet Leica GZR3 2 Carrier with laser plummet Leica SNLL121 2 Tripod Leica wooden tripod 5 Meteo station Kestrel 45 1 Reflector pole Leica GLS14 1 Surveying operations, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

17 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 17/ Polygon network All surveying operations have been carried out in such a way to provide the highest accuracy for the 3D vectors determination between the observing reference points. General polygon network Observations were done by total station from six temporary stations 1, 2, 3, 4, 5 and 6., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

18 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 18/ Surveying method All the lines of sight have been observed with the total station. Horizontal directions and zenith angles were observed in data sets, each set consisting in one reading in both direct and reverse theodolite positions. Distance measurements were observed at least twice over each line. Meteorological data (atmospheric pressure and temperature) used to correct distance measurements, were recorded during the operation. The set up strategy mixes GNSS and conventional observations. The GNSS observations are used to get the polygon bearing Permanent stations reference point reference point The reference point of DORIS antenna has been determined indirectly. From each surveying station aiming at the antenna, right and left tangents to the DORIS antenna close to the ARP (red circle) were observed. In the adjustment, horizontal and zenithal angle observations were simply averaged to get its planimetric and altimetric positions. Top view, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

19 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 19/7 METG reference point From each surveying station aiming at the antenna, the reference point was directly observed through a prism directly set up in the vertical alignment of the ARP. Vertical offset from prism to ARP is accurately known (see below). Top view GNSS observations GNSS observations have been carried out in order to determine the orientation of the survey network. Orientations are known from the baselines between METG and stations 1 and 2. These two stations were temporary setup as far away as possible from the site. In addition, GNSS observations have been carried out to tie the permanent GNSS station METS to METG., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

20 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 2/ Weather data Metsähovi has a humid continental climate with warm summers and no dry season. Next graphics show weather conditions on site during the topometric survey measurements, i.e. July 2nd 212, from 11 am to 2 pm. Data record by weather tracker Kesterl 45. Data record by weather tracker Kesterl 45. Data record by weather tracker Kesterl 45. July 2nd 212, the weather was sunny and temperate. These data have been taken into account to correct distance measurements., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

21 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 21/7 4. Computation 4.1. Determination of METG antenna reference point coordinates in IGb8 The resulting coordinates are expressed in IGb8 at the mid-epoch of a GNSS data set, i.e. epoch (11/7/212). 7 daily data sessions have been processed, from 9 July 212 to 15 July 212 In summary, the computation process was the following a first step to provide loosely constrained solutions, and a second step to combine these solutions in order to get final coordinates in the properly defined reference frame. The use of a high level software Bernese GNSS Software V5 is required with a thoroughly fixed parameterization. The processing of a GNSS data set in ITRF is achieved by the use of IGS data and products expressed in ITRF28 via IGb8 reference frame. The computation process is described in appendix 6.4. Coordinates expressed in IGb8 at epoch Station DOMES number BOR1 1225M2 JOZE 1224M1 KIR 1422M1 MAR6 145M2 MDVJ 1239M5 METG_ARP METS 153S11 ONSA 142M4 POTS 1416M3 RIGA 1232M2 SVTL 1235M1 TRO1 132M6 VIS 1423M1 X (m) Y (m) Z (m) Cartesians coordinates, IGb8/ITRF8, epoch (11/7/212), 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

22 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 22/ Local GNSS network The local GNSS baselines (see paragraph 3.4.2) were processed with Leica Geo Office V8.3 software using IGb8 precise ephemeris and the original set of «absolute» GNSS antenna calibrations (igs8.atx). The corresponding LGO report file is given in appendix Global adjustment The final computation has been carried out by a Least Squares 3D Adjustment with the Microsearch Geolab version software. The input file (see appendix 6.6) comes from Total station observations horizontal and zenith angles, distances, Centring equations relative position between points, Azimuths issued from the GNSS baselines process, METG antenna reference point coordinates have been constrained at 1 mm to its IGS8 (epoch , 11/7/212) values. The a priori standard deviations used for the different observations with total station are.8 mgon for horizontal and vertical angles, 1 mm for distances on prism, These values are used for most of the targets in our Microsearch Geolab computation input file. This adjustment provided coordinates and a covariance matrix of our survey work (appendix 6.7). Geoid slope is insignificant around Metsähovi. The EGM28 geoid model undulations have not been taken into account in the process to correct the vertical / normal deflation., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

23 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 23/7 5. Results 5.1. Station name translation table The following list sums up the main points of the Microsearch Geolab input file. Point description Used name or code Computation name DORIS stations DORIS antenna reference point DORIS pillar/domed mark Ex-DORIS antenna reference point 153S16 153M6 153S15 _marker METB GNSS permanent station METS reference point METG reference point METG antenna reference point 153S11 153M2 - METS METG METG_ARP 5.2. Adjusted coordinates and confidence regions The results of the adjustment are the coordinates of all points and their confidence ellipsoids in the IGb8/ITRF28 at the mean epoch of the observations (i.e. epoch ). The table below provides the 3D coordinates and confidence region at 95 % of the points of interest. ================================================================================ METG (FINLAND) REGINA&DORIS TIES - JULY 212 SURVEY Microsearch GeoLab, V GRS 8 UNITS m,grad ================================================================================ Adjusted XYZ Coordinates X-COORDINATE Y-COORDINATE Z-COORDINATE CODE FFF STATION STD DEV STD DEV STD DEV XYZ METB XYZ METG XYZ METG_ARP XYZ METS XYZ XYZ _marker , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr m m m m m m

24 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 24/7 ================================================================================ METG (FINLAND) REGINA&DORIS TIES - JULY 212 SURVEY Microsearch GeoLab, V GRS 8 UNITS m,grad ================================================================================ 2-D and 1-D Station Confidence Regions (95. and 95. percent) STATION MAJOR SEMI-AXIS AZ MINOR SEMI-AXIS VERTICAL METB METG METG_ARP METS _marker ================================================================================ METG (FINLAND) REGINA&DORIS TIES - JULY 212 SURVEY Microsearch GeoLab, V GRS 8 UNITS m,grad ================================================================================ Adjusted PLH Coordinates LATITUDE LONGITUDE ELIP-HEIGHT CODE FFF STATION STD DEV STD DEV STD DEV PLH METB N E m PLH METG N E m PLH METG_ARP N E m.11 PLH METS N E m.12 PLH N E m PLH _marker N E m The whole covariance matrix was computed, then it was possible to extract from it the covariance submatrix for the 4 main points of interest i.e., METB, METS and METG for the ITRF214 computation. Finally, this covariance submatrix has been converted into the SINEX format using the «geotosnx» tool provided by Z. Altamimi. The resulting SINEX file ( _V12.SNX) is provided in appendix Vectors between points of interest Differential components between points of interest in IGb8 dx (m) dy (m) dz (m) Accuracy (m) METG METG METB METB METG METS , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

25 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 25/7 6. Appendixes 6.1. DORIS station site log METSAHOVI DORIS site description form. Form Prepared by SIMB (DORIS installation and maintenance department) Date prepared 11/4/213 Report type UPDATE 1. Site location information Site name Site DOMES number Host agency City State or province Country Tectonic plate Geological information Geographical coordinates North Latitude East Longitude Ellipsoid height Approximate altitude METSAHOVI 153 Finnish Geodetic Institute Masala FINLAND EURA (ITRF) 6 deg 14' 31'' 24 deg 23' 4'' 62 m 42 m 2. DORIS antenna and reference point information Four character ID Antenna model Antenna serial number IERS DOMES number CNES/ number DORIS SSALTO number Date installed (dd/mm/yy) Date removed (dd/mm/yy) Antenna support type Installed on Height above ground mark Ground mark type Ground mark DOMES number META Alcatel S /6/ /1/2 Guyed 3 metre tower Concrete block 3.62 m FGI mark fixed on the base plate. 153M4 Four character ID Antenna model Antenna serial number IERS DOMES number CNES/ number DORIS SSALTO number Date installed (dd/mm/yy) Date removed (dd/mm/yy) Antenna support type Installed on Height above ground mark Ground mark type Ground mark DOMES number METB Starec type S /1/2 19/5/ m rigid tower 55cm sided concrete block (1.6 m deep) 2.99 m FGI geodetic mark fixed on top concrete block 153M6, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

26 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 26/7 Four character ID Antenna model Antenna serial number IERS DOMES number CNES/ number DORIS SSALTO number Date installed (dd/mm/yy) Date removed (dd/mm/yy) Antenna support type Installed on Height above ground mark Ground mark type Ground mark DOMES number METB Starec type S /5/25 26/6/ m rigid tower 55cm sided concrete block (1.6 m deep) 2.99 m FGI geodetic mark fixed on top concrete block 153M6 Antenna change without centering control Four character ID Antenna model Antenna serial number IERS DOMES number CNES/ number DORIS SSALTO number Date installed (dd/mm/yy) Date removed (dd/mm/yy) Antenna support type Installed on Height above ground mark Ground mark type Ground mark DOMES number Starec type S /6/212 2 m high very rigid metal tower 55 cm sided concrete block m FGI geodetic mark fixed on top concrete block 153M6 3. DORIS beacons information 3.1 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) META 1/7/1988 1/9/1988 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) META 1/1/1988 9/8/1994 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) META 15/8/ /1/2 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) METB 26/1/2 15/8/23 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) METB 18/8/23 1/1/ , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

27 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 27/7 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) METB 1/1/24 28/1/25 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) METB 17/2/25 18/5/25 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) METB 18/5/25 26/6/212 Beacon serial number Beacon model USO serial number 4 Char. ID of the REF point Date installed (dd/mm/yy) Date removed (dd/mm/yy) /6/ ITRF coordinates and velocities of the current DORIS ref. point () Solution Epoch X = m Sig X =.1 m ITRF28 (tie to METB) 25. Y = m Z = m Sig Y =.1 m Sig Z =.1 m VX = m/y VY =.145 m/y VZ =.13 m/y Sig VX =.1 m/y Sig VY =.1 m/y Sig VZ =.1 m/y 5. IERS colocation information Instrument type Status DOMES number of the instrument ref. point GNSS Permanent Instrument type Status DOMES number of the instrument ref. point GNSS Permanent Instrument type Status DOMES number of the instrument ref. point SLR Permanent Instrument type Status DOMES number of the instrument ref. point SLR Mobile 153M2 Permanent GNSS station REGINA (METG ex VLBI mark) 153S11 Permanent GNSS station IGS station (METS) S1 153S14, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

28 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 28/7 6. Tide Gauge colocation information 7. Local site ties Point description DORIS Starec antenna reference point (METB) DOMES number 153S15 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m).218 dy (m).13 dz (m).422 Accuracy (m).1 Date measured 27/6/212 Additional information Survey by -F 212 Point description DORIS Alcatel antenna reference point (META) DOMES number 153S13 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m) dy (m) dz (m) Accuracy (m).1 Date measured 2/7/212 Additional information Survey by -F 212 Point description Mark on top of concrete block DOMES number 153M6 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m) dy (m) dz (m) Accuracy (m).1 Date measured 2/7/212 Additional information Survey by -F 212 Point description Permanent GNSS station IGS (METS) DOMES number 153S11 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m) dy (m) dz (m) Accuracy (m).1 Date measured 2/7/212 Additional information Survey by -F 212 Point description REGINA station (METG ex VLBI mark C 761) DOMES number 153M2 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m) dy (m) dz (m) Accuracy (m).1 Date measured 2/7/212 Additional information Survey by -F 212 Point description SLR (C 786) DOMES number 153S14 Differential components from the current DORIS ref. point () to the above point (in the ITRS) dx (m) dy (m) dz (m) Accuracy (m).1, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

29 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 29/7 Date measured 2/7/212 Additional information Survey by -F Meteorological Instrumentation 8.1 Humidity sensor Model HMP45D Manufacturer VAISALA Accuracy +/- 3 percents 8.2 Pressure sensor Model PTU2 class B Manufacturer VAISALA Accuracy +/-.25 hpa Height 1.8 m below the current DORIS ref. point () long term stability = +/-.1 hpa/year 8.3 Temperature sensor Model HMP45D Manufacturer VAISALA Accuracy +/-.5 deg C 9. DORIS network contacts Primary contact Name Jerome SAUNIER Agency Institut Geographique National Mailing address de Geodesie 73 avenue de Paris SAINT-MANDE Cedex FRANCE Telephone Fax jerome (.) saunier (@) ign.fr Secondary contact Name Francois BOLDO Agency Institut Geographique National Mailing address CNES (DCT/ME/OC) 18 Avenue Edouard Belin 3141 TOULOUSE Cedex FRANCE Telephone Fax simb (.) doris (@) cnes.fr, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

30 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 3/ «METG» GNSS station site log METG Site Information Form (site log) International GNSS See Instructions at ftp//igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt. Form Prepared by (full name) Date Prepared Report Type If Update Previous Site Log Modified/Added Sections 1. Jean-Paul CARDALIAGUET update metg_21533.log 2, 3.2, 3.3 Site Identification of the GNSS Monument Site Name Four Character ID Monument Inscription IERS DOMES Number C Number Monument Description Height of the Monument Monument Foundation Foundation Depth Marker Description Date Installed Geologic Characteristic Bedrock Type Bedrock Condition Fracture Spacing Fault zones nearby Distance/activity 2. METSAHOVI METG None 153M2 STEEL MAST 2 m CONCRETE BLOCK (1M diameter) DOMED BRASS NAIL TZ (multiple lines) VERY RIGID STEEL MAST, 2M HIGH Site Location Information City or Town METSAHOVI State or Province MASALA Country Finland Tectonic Plate EURASIAN Approximate Position (ITRF) X coordinate (m) Y coordinate (m) Z coordinate (m) Latitude (N is +) Longitude (E is +) Elevation (m,ellips.) ITRF28 epoch GNSS Receiver Information 3.1 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. TRIMBLE NETR9 GPS+GLO+GAL+SBAS deg TZ T163Z 3.2 Receiver Type Satellite System Serial Number Firmware Version TRIMBLE NETR9 GPS+GLO+GAL+BDS+SBAS 5134K , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

31 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 31/7 Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. 3 deg T163Z T755Z 3.3 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. TRIMBLE NETR9 GPS+GLO+GAL+BDS+SBAS 5134K deg T81Z CCYY-MM-DDThhmmZ 3.x Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. (A2, from rcvr_ant.tab; see instructions) (GPS+GLO+GAL+BDS+QZSS+SBAS) (A2, but note the first A5 is used in SINEX) (A11) (deg) (CCYY-MM-DDThhmmZ) (CCYY-MM-DDThhmmZ) (none or tolerance in degrees C) (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed TRM598. SCIS BPA deg SCIS 879 TRIMBLE 3 m TZ CCYY-MM-DDThhmmZ 4.x Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed (A2, from rcvr_ant.tab; see instructions) (A, but note the first A5 is used in SINEX) (BPA/BCR/XXX from "antenna.gra"; see instr.) (F8.4) (F8.4) (F8.4) (deg; + is clockwise/east) (A4 from rcvr_ant.tab; see instructions) (vendor & type number) (m) (CCYY-MM-DDThhmmZ) (CCYY-MM-DDThhmmZ) (multiple lines) 5. Surveyed Local Ties 5.1 Tied Marker Name DORIS antenna ref. pt. () Tied Marker Usage Tied Marker C Number Tied Marker DOMES Number 153S16 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 1 mm Survey method TRIANGULATION Date Measured TZ high geodetic surveying, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

32 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 32/7 5.2 Tied Marker Name Marker DORIS Tied Marker Usage Tied Marker C Number Tied Marker DOMES Number 153M6 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 1 mm Survey method TRIANGULATION Date Measured TZ high geodetic surveying 5.3 Tied Marker Name DORIS Starec antenna reference point (METB) Tied Marker Usage Tied Marker C Number Tied Marker DOMES Number 153S15 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 1 mm Survey method TRIANGULATION Date Measured TZ high geodetic surveying 5.x Tied Marker Name Tied Marker Usage (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker C Number (A4) Tied Marker DOMES Number (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) (m) dy (m) (m) dz (m) (m) Accuracy (mm) (mm) Survey method (GPS CAMPA/TRILATERATION/TRIANGULATION/etc) Date Measured (CCYY-MM-DDThhmmZ) (multiple lines) Frequency Standard Standard Type Input Frequency INTERNAL /CCYY-MM-DD 6.x Standard Type Input Frequency 7. Collocation Information 7.1 Instrumentation Type Status DORIS PERMANENT /CCYY-MM-DD 7.x Instrumentation Type Status 8. Meteorological Instrumentation 8.1.x Humidity Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy (% rel h) Aspiration Height Diff to Ant Calibration date (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) (if external) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) (PERMANENT/MOBILE) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) (sec) (% rel h) (UNASPIRATED/NATURAL/FAN/etc) (m) (CCYY-MM-DD), 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

33 RT/G 25 Metsähovi ITRF co-location site survey July x page 33/7 8.3.x 8.4.x 8.5.x 9. (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Pressure Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Height Diff to Ant Calibration date (sec) (hpa) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Temp. Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Aspiration Height Diff to Ant Calibration date (sec) (deg C) (UNASPIRATED/NATURAL/FAN/etc) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Water Vapor Radiometer Manufacturer Serial Number Distance to Antenna Height Diff to Ant Calibration date (m) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Other Instrumentation (multiple lines) 9.1.x Local Ongoing Conditions Possibly Affecting Computed Position Radio Interferences Observed Degradations (TV/CELL PHONE ANTENNA/RADAR/etc) (SN RATIO/DATA GAPS/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) 9.2.x Multipath Sources (METAL ROOF/DOME/VLBI ANTENNA/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) 9.3.x 1. Signal Obstructions (TREES/BUILDINGS/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Local Episodic Effects Possibly Affecting Data Quality 1.x Date Event 11. (CCYY-MM-DD/CCYY-MM-DD) (TREE CLEARING/CONSTRUCTION/etc) On-Site, Point of Contact Agency Information Agency Preferred Abbreviation Mailing Address Primary Contact Contact Name Telephone (primary) Telephone (secondary) Fax Secondary Contact Contact Name Telephone (primary) Telephone (secondary) NATIONAL LAND SURVEY OF FINLAND FGI PAIKKATIETOKESKUS MML GEODEETINRINNE 2 FI-243 MASALA, FINLAND JYRI NARANEN JYRI.NARANEN@NLS.FI, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

34 Metsähovi ITRF co-location site survey July 212 page 34/7 Fax 12. Responsible Agency (if different from 11.) Agency Preferred Abbreviation Mailing Address Centre National d'etudes Spatiales CNES CNES DCT/OP/EM - 18, avenue Edouard Belin 3141 Toulouse cedex 9 - France Jean-Paul Cardaliaguet (33) Primary Contact Contact Name Telephone (primary) Telephone (secondary) Fax Secondary Contact Contact Name Telephone (primary) Telephone (secondary) Fax 13. RT/G 25 (33) jean-paul.cardaliaguet@cnes.fr More Information Primary Data Center Secondary Data Center CDDIS URL for More Information Hardcopy on File Site Map Site Diagram X Horizon Mask X Monument Description (Y) Site Pictures (Y) Antenna Graphics with Dimensions TRM / \ x < <--.12 TCR <-< BCR <--. BPA=ARP -->, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

35 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 35/ «METS» GNSS station site log METS Site Information Form (site log) International GNSS See Instructions at ftp//igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt. Form Prepared by (full name) Date Prepared Report Type If Update Previous Site Log Modified/Added Sections 1. Sonja Nyberg UPDATE mets_21523.log 7.5, 7.6, 7.7, 7.8, 7.9, 7.1, 7.11 Site Identification of the GNSS Monument Site Name Four Character ID Monument Inscription IERS DOMES Number C Number Monument Description Height of the Monument Monument Foundation Foundation Depth Marker Description Date Installed Geologic Characteristic Bedrock Type Bedrock Condition Fracture Spacing Fault zones nearby Distance/activity 2. METSAHOVI METS 153S11 STEEL GRID MAST 21 m BRASS BOLT ON BEDROCK T12Z BEDROCK METAMORPHIC FRESH over 2 cm NO Antenna height stabilised by an invar bar. Site Location Information City or Town Kirkkonummi State or Province Country Finland Tectonic Plate EURASIAN Approximate Position (ITRF) X coordinate (m) Y coordinate (m) Z coordinate (m) Latitude (N is +) Longitude (E is +) Elevation (m,ellips.) km west from Helsinki 3. GNSS Receiver Information 3.1 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ROGUE SNR-8C GPS # deg T12Z T13Z 18. +/- 3.2 Receiver Type Satellite System Serial Number Firmware Version ROGUE SNR-8C GPS #32 7.5, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

36 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 36/7 Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. 5 deg T1111Z T6Z 18. +/- 3.3 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ROGUE SNR-8C GPS # deg T62Z T235Z 18. +/- 3.4 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ROGUE SNR-81 GPS # deg T2Z TZ 18. +/- 3.5 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ROGUE SNR-81 GPS # deg T1Z T2355Z 18. +/- 3.6 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ROGUE SNR-81 GPS # deg T3Z T2355Z 18. +/- 3.7 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 16 CC 5 deg TZ T7Z 18. +/22-MAY-21 Changes made to be consistent with RINEX header (Full s/n LP16U). 3.8 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 18 CD 5 deg T7Z T82Z 18. +/- 3.9 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 16 CD 5 deg T82Z T1245Z 18. +/-, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

37 Metsähovi ITRF co-location site survey July 212 page 37/7 Full s/n LP16U 3.1 Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 18 CD 5 deg T1245Z T9Z 18. +/ Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 298 CD 5 deg T9Z T1155Z 18. +/ Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. ASHTECH Z-XII3 GPS 832 CD 5 deg T1156Z CCYY-MM-DDThhmmZ 18. +/- 3.x Receiver Type Satellite System Serial Number Firmware Version Elevation Cutoff Setting Date Installed Date Removed Temperature Stabiliz. (A2, from rcvr_ant.tab; see instructions) (GPS+GLO+GAL+BDS+QZSS+SBAS) (A2, but note the first A5 is used in SINEX) (A11) (deg) (CCYY-MM-DDThhmmZ) (CCYY-MM-DDThhmmZ) (none or tolerance in degrees C) (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed AOAD/M_B 125 BCR... +/- 4 deg NONE Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed AOAD/M_T 519 BPA... deg NONE 4.2 RT/G 25 NONE T12Z T1431Z NONE T1431Z T1145Z Due to reinstallation of the invar stabilization, the ARP of the new antenna is, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

38 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 38/7 22mm lower than the ARP of the old antenna. New antenna is absolute calibrated by Geo++ GmbH in Feb x Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed ASH7936C_M BPA... deg NONE NONE Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed ASH7936C_M BPA... deg NONE Antenna Type Serial Number Antenna Reference Point Marker->ARP Up Ecc. (m) Marker->ARP North Ecc(m) Marker->ARP East Ecc(m) Alignment from True N Antenna Radome Type Radome Serial Number Antenna Cable Type Antenna Cable Length Date Installed Date Removed (A2, from rcvr_ant.tab; see instructions) (A, but note the first A5 is used in SINEX) (BPA/BCR/XXX from "antenna.gra"; see instr.) (F8.4) (F8.4) (F8.4) (deg; + is clockwise/east) (A4 from rcvr_ant.tab; see instructions) T1155Z T654Z New antenna is absolute calibrated by Geo++ GmbH. Calibration values have been submitted to EPN CB. NONE AIRCOM+ and Aircell5 72 m T945Z CCYY-MM-DDThhmmZ Only antenna cable setup was changed. Cable setup from antenna to receiver is (1) 45m AIRCOM+; (2)Lightning Protection (PolyPhaser DGXZ + 15NFNF-A); (3) 25m AIRCOM+; (4) GPS Networking HIALDCBS1X2-N High Isolated 1X2 splitter; (5) 2m Aircell5 (vendor & type number) (m) (CCYY-MM-DDThhmmZ) (CCYY-MM-DDThhmmZ) (multiple lines) 5. Surveyed Local Ties 5.1 Tied Marker Name Mobile VLBI Tied Marker Usage Mobile VLBI Tied Marker C Number 761 Tied Marker DOMES Number 153M2 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 5 mm Survey method GPS Date Measured T12Z, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

39 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 39/7 5.2 Tied Marker Name DORIS Tied Marker Usage DORIS Tied Marker C Number Tied Marker DOMES Number 153S13 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 5 mm Survey method Precision tacheometry Date Measured T12Z 5.3 Tied Marker Name SLR Tied Marker Usage SLR Tied Marker C Number 786 Tied Marker DOMES Number 153S14 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m) dz (m) Accuracy (mm) 2 mm Survey method Precision tacheometry Date Measured T12Z 5.4 Tied Marker Name GPS/GLONASS Tied Marker Usage GLONASS Tied Marker C Number Tied Marker DOMES Number 153M5 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) dy (m).25 dz (m).398 Accuracy (mm) 1 mm Survey method GPS Date Measured T12Z 5.x Tied Marker Name Tied Marker Usage (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker C Number (A4) Tied Marker DOMES Number (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) (m) dy (m) (m) dz (m) (m) Accuracy (mm) (mm) Survey method (GPS CAMPA/TRILATERATION/TRIANGULATION/etc) Date Measured (CCYY-MM-DDThhmmZ) (multiple lines) 6. Frequency Standard 6.1 Standard Type Input Frequency 6.2 Standard Type Input Frequency EXTERNAL QUARTZ (OSCILLOQUARTZ BVA 86-B) 5 MHz / Standard Type Input Frequency EXTERNAL H-MASER 5 MHz / often unreliable, from Metsahovi Radio Research Station EXTERNAL H-MASER 5 MHz / repaired, frequency availability not fully secured. External H-MASER disconnected due to bad signal quality., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

40 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 4/7 6.4 Standard Type Input Frequency INTERNAL /CCYY-MM-DD 6.x Standard Type Input Frequency (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) (if external) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) 7. Collocation Information 7.1 Instrumentation Type Status SLR PERMANENT / , upgraded in Instrumentation Type Status VLBI MOBILE / MV-3, 5 days 7.3 Instrumentation Type Status DORIS PERMANENT /CCYY-MM-DD 7.4 Instrumentation Type Status SUPERCONDUCTING GRAVIMETER PERMANENT /CCYY-MM-DD GWR TT7, S/N Instrumentation Type Status SLR PERMANENT / Instrumentation Type Status GPS/GLONASS RECEIVER PERMANENT / METZ 153M5 7.7 Instrumentation Type Status ABSOLUTE GRAVIMETER MOBILE /CCYY-MM-DD FG5-221, updated to FG5x in Instrumentation Type Status VLBI PERMANENT /CCYY-MM-DD IVS station METSAHOV Observations during GeoVLBI campaigns 7.9 Instrumentation Type Status GNSS PERMANENT /CCYY-MM-DD IGS station METG 153M2 7.1 Instrumentation Type Status GNSS PERMANENT /CCYY-MM-DD MET3 153M Instrumentation Type Status SUPERCONDUCTING GRAVIMETER PERMANENT /CCYY-MM-DD OSG-73 7.x (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) (PERMANENT/MOBILE) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) Instrumentation Type Status, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

41 RT/G 25 Metsähovi ITRF co-location site survey July page 41/ Meteorological Instrumentation Humidity Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy (% rel h) Aspiration Height Diff to Ant Calibration date Humidity Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy (% rel h) Aspiration Height Diff to Ant Calibration date Pressure Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Height Diff to Ant Calibration date Pressure Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Height Diff to Ant Calibration date Temp. Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Aspiration Height Diff to Ant Calibration date Temp. Sensor Model Manufacturer Serial Number Data Sampling Interval Accuracy Aspiration Height Diff to Ant Calibration date Water Vapor Radiometer Manufacturer Serial Number Distance to Antenna (m) Height Diff to Ant Calibration date 8.1.x x x 8.4.x HMP35D Vaisala 6 sec 3 +/ m (CCYY-MM-DD) /CCYY-MM-DD (sec) (% rel h) (UNASPIRATED/NATURAL/FAN/etc) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) PTB2A Vaisala 6 sec.2 hpa -5.3 m (CCYY-MM-DD) /CCYY-MM-DD (sec) (hpa) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) HMP35D (Pt-1) Vaisala 6 sec.2 deg C -5.3 m /CCYY-MM-DD (sec) (deg C) (UNASPIRATED/NATURAL/FAN/etc) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) (m) (CCYY-MM-DD) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines), 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

42 Metsähovi ITRF co-location site survey July 212 page 42/7 8.5.x Other Instrumentation 9. (multiple lines) Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences Observed Degradations 9.2.x Multipath Sources (METAL ROOF/DOME/VLBI ANTENNA/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) 9.3.x Signal Obstructions (TREES/BUILDINGS/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) 1. Preferred Abbreviation Mailing Address Primary Contact Contact Name Telephone (primary) Telephone (secondary) Fax Secondary Contact Contact Name Telephone (primary) Telephone (secondary) Fax (CCYY-MM-DD/CCYY-MM-DD) (TREE CLEARING/CONSTRUCTION/etc) Finnish Geospatial Research Institute National Land Survey of Finland FGI PL 84 FIN-521 Helsinki FINLAND Finnref GNSS team Sonja Nyberg Responsible Agency (if different from 11.) Agency Preferred Abbreviation Mailing Address Primary Contact Contact Name Telephone (primary) Telephone (secondary) Fax Secondary Contact Contact Name Telephone (primary) Telephone (secondary) Fax 13. (TV/CELL PHONE ANTENNA/RADAR/etc) (SN RATIO/DATA GAPS/etc) (CCYY-MM-DD/CCYY-MM-DD) (multiple lines) On-Site, Point of Contact Agency Information Agency 12. Local Episodic Effects Possibly Affecting Data Quality 1.x Date Event 11. RT/G 25 More Information Primary Data Center Secondary Data Center URL for More Information Hardcopy on File Site Map Site Diagram Horizon Mask Monument Description BKG OLG X X X, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

43 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 43/7 Site Pictures X Antenna Graphics with Dimensions AOAD/M_T Dorne Margolin with chokerings (Rogue, AOA design) / \ = x < ARP Antenna Reference Point L1 L1 Phase Center <--.12 TCR <-< BCR <--. BPA=ARP --> L2 L2 Phase Center, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

44 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 44/ Bernese GNSS process The processing of a GNSS data set in ITRF is achieved by the use of IGS data and products expressed in ITRF28 via IGb8 reference frame Ephemeris and Earth Orientation Parameters. GNSS observations, coordinates and velocities of IGS reference stations. Basically the observation data of about 12 IGS stations in a 1 km radius from Metsähovi are available daily. Antenna calibration stemming from igs8.atx. The computation is validated with respect to the following points Assessment of the Root Mean Square errors of the combined solution. Assessment of consistency between the daily solutions (repeatability). Assessment of alignment of the combined solution to the IGS8 reference frame. Daily processing steps 7 daily data sessions have been processed, from 9 July 212 to 15 July 212 based on a network integer ambiguity fixed solution from ionosphere free double difference processing using IGS precise ephemeris and earth orientation parameters. Each daily solution has been validated according to - Ambiguity integer fixed results - Variance factor range - Helmert adaptation from IGS stations computed coordinates to actual ones, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

45 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 45/7 Baselines provided from session 11/7/212 (Shortest strategy) Session Combination Daily normal equations were merged using a least squares adjustment process in order to provide a final reference free combined solution. The residuals of the individual solutions with respect to the combined one have been computed and checked. The Root Mean Square errors and the consistency between the daily solutions (repeatability) were assessed., 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

46 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 46/7 Root Mean Square errors Next table shows the Root Mean Square errors of the combined solution (mm in North, East and Up component). Station BOR1 JOZE KIR MAR6 MDVJ METG_ARP METS ONSA POTS RIGA SVTL TRO1 VIS DOMES number 1225M2 1224M1 1422M1 145M2 1239M5 153S11 142M4 1416M3 1232M2 1235M1 132M6 1423M1 E RMS N RMS U RMS Repeatability Next table shows statistics about shifts between the daily solutions and the adjusted solution (mm in North, East and Up component). Station DOMES number RMS N Min N Max N RMS E Min E Max E RMS U Min U Max U BOR1 1225M JOZE 1224M KIR 1422M MAR6 145M MDVJ 1239M METG_ARP METS 153S ONSA 142M POTS 1416M RIGA 1232M SVTL 1235M TRO1 132M VIS 132M , 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

47 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 47/7 IGb8 epoch alignment The combined solution has been Helmert-aligned to IGb8 at mid-epoch of data set, i.e Residuals have been checked to assess consistency of this solution. Station DOMES number BOR1 JOZE KIR MAR6 MDVJ METS ONSA POTS RIGA SVTL TRO1 VIS RMS 1225M2 1224M1 1422M1 145M2 1239M5 153S11 142M4 1416M3 1232M2 1235M1 132M6 1423M1 COMPONENT North Residuals (mm) East Vertical Coordinates expressed in IGb8 at epoch Station DOMES number BOR1 1225M2 JOZE 1224M1 KIR 1422M1 MAR6 145M2 MDVJ 1239M5 METG_ARP METS 153S11 ONSA 142M4 POTS 1416M3 RIGA 1232M2 SVTL 1235M1 TRO1 132M6 VIS 1423M1 X (m) Y (m) Z (m) Cartesians coordinates, IGb8/ITRF8, epoch (11/7/212), 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

48 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 48/ Leica Geo Office report file Local GNSS observations were processed with Leica Geo Office V8.3, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr

49 RT/G 25 Metsähovi ITRF co-location site survey July 212 page 49/7, 73 avenue de Paris, Saint-Mandé Cedex Tél sgn@ign.fr