Author: H. Habrich ******************************************************************************* EUREF REPORT FOR GPS WEEK 1127 (DAYS 224-230, DATES 12-08-01 - 18-08-01) ******************************************************************************* Report of the combination of the European weekly GPS solutions International Association of Geodesy Commission X - Global and Regional Geodetic Networks Subcommission for Europe (EUREF) Contributing Solutions: ----------------------- Group Description Contribution ASI - Nuova Telespazio S.p.A., Space Geodesy Center, Italy SINEX BEK - International Commission for Global Geodesy of SINEX the Bavarian Academy of Sciences, Germany BKG - Bundesamt fuer Kartographie und Geodaesie, Germany SINEX COE - European solution created at CODE SINEX (Center for Orbit Determination in Europe) DEO - Delft Institute for Earth-Orientated Space Research, SINEX Delft University of Technology, Netherlands GOP - Geodetic Observatory Pecny, Czech Republic SINEX IGE - Instituto Geografico Nacional - Spain SINEX IGN - Institut Geographique National, France SINEX LPT - Bundesamt fuer Landestopographie (L+T), Switzerland SINEX NKG - Nordic Geodetic Commision SINEX OLG - Observatory Lustbuehel Graz, Austria SINEX ROB - Royal Observatory of Belgium SINEX UPA - Universita di Padova, Italy SINEX WUT - Warsaw University of Technology, Poland SINEX SINEX: Software independent exchange format Version 0.05 or 1.00 Submitted by: Bundesamt fuer Kartographie und Geodaesie (BKG) Frankfurt am Main, Germany Contact : Heinz Habrich (habrich@ifag.de) Products are available through A) http://igs.ifag.de/root_ftp/EUREF/products/ or ftp://igs.ifag.de/EUREF/products/ B) ftp://ftpserver.oma.be -or- ftp 193.190.231.100 after login: cd pub/astro/euref/product/combin C) ftp://cddisa.gsfc.nasa.gov/gps/products/ Processing Strategy: -------------------- The weekly EUREF solution (EUR) is created from a combination of the contributing normal equations, after removing the local analysis center (LAC) specific constraints. Covariance rescaling factors are derived from the sampling rate used by each center. In fact all solutions contribute to the combined solution with the same weight. The rescaling factors of all centers are chosen, such that they give the resulting EUREF solution realistic formal errors. Contents of Table 1: To align the EUREF weekly solutions with the terrestrial reference frame the coordinates of a selected set of 'reference stations' are hold fixed. Table 1 shows the selected reference frames and stations. Contents of Table 2: List of resulting files and manual edited remarks. Contents of Table 3: Each station is processed by at least 3 LACs. This redundancy allows for outlier detection in the combination. The table shows a list of stations, which have been excluded in the combination for this week. Contents of Table 4: In order to reduce biases in the combination of the station specific troposphere parameters, which are estimated by the LACs, the solutions of all LACs have to be aligned to a common terrestrial reference frame. In fact all 'coordinate SINEX' and 'troposphere SINEX' files submitted by the LACs are aligned to a common reference frame, which yields a consistency of the combined coordinates and troposphere parameters. This table shows the residuals between the coordinates of the EUREF combined SINEX file and the SINEX files of each LAC (majority voting applied). It indicates the consistency of the reference frame alignmet of the LAC solutions. Contents of Table 5: The comparisons between each individual solution and the combined solution is done using a 7-parameter Helmert transformation. The Helmert parameters are determined using all sites of the individual solutions. In the first part of the Table unweighted rms values (for the coordinate components in the local system North-East-Up), derived from the Helmert residuals, are shown for each site. In the second part of the table an (unweighted) rms is computed for each Analysis Center. These values are derived from the Helmert residuals of all sites of a particular Analysis Center. ------------------------------------------------------------------------------- TABLE 1: REFERENCE FRAME ALIGNMENT ------------------------------------------------------------------------------- GPS WEEKS REFERENCE FRAME REFERENCE STATIONS ------------------------------------------------------------------------------- 0860-0946 ITRF94 BRUS GRAZ KOSG MATE METS ONSA WTZR ZIMM 0947-0981 ITRF96 BOR1 GRAZ KOSG MATE ONSA POTS REYK WTZR ZIMM ZWEN VILL 0982-1020 ITRF96 BOR1 GRAZ KOSG MATE ONSA POTS REYK WTZR ZIMM ZWEN VILL GRAS 1021-1056 ITRF97 BOR1 GRAZ KOSG MATE ONSA POTS REYK WTZR ZWEN VILL GRAS NYA1 TRO1 THU1 1057- ITRF97 BOR1 GRAZ KOSG MATE ONSA POTS REYK WTZR VILL GRAS NYA1 TRO1 THU1 ------------------------------------------------------------------------------- TABLE 2: AVAILABLE FILES AND REMARKS: ------------------------------------------------------------------------------- EUR11277.SUM THIS TEXT FILE EUR11277.SNX COMBINED EUROPEAN SOLUTION FOR GPS WEEK 1127 ------------------------------------------------------------------------------- REMARKS: - ------------------------------------------------------------------------------- TABLE 3: EXCLUDED STATIONS ------------------------------------------------------------------------------- --> EXCLUDE STATION: 143 CAGL 12725M003 TO -1 CAGL SCRATCHASI --> EXCLUDE STATION: 154 MADR 13407S012B TO -1 MADR SCRATCH --> EXCLUDE STATION: 203 AJAC 10077M005 TO -1 AJAC SCRATCHCOE --> EXCLUDE STATION: 232 VALE 13439M001 TO -1 VALE SCRATCHDEO --> EXCLUDE STATION: 227 MALL 13444M001 TO -1 MALL SCRATCHGOP --> EXCLUDE STATION: 101 GRAS 10002M006 TO -1 GRAS SCRATCHIGN --> EXCLUDE STATION: 221 MAS1 31303M002 TO -1 MAS1 SCRATCHIGN --> EXCLUDE STATION: 126 MOPI 11507M001 TO -1 MOPI SCRATCHWUT ------------------------------------------------------------------------------- TABLE 4: COMPARISON OF STATION COORDINATES IN SINEX FILES (IN MM): ------------------------------------------------------------------------------- ASI BEK BKG COE DEO GOP IGE IGN LPT ------------------------------------------------------------------------------- STAX MEAN -562.2 12.1 -113.0 -2.6 -218.5 -0.7 20.1 ****** 2.9 STAY MEAN -134.9 -10.4 -54.9 0.2 22.7 0.0 5.4 74.9 -0.1 STAZ MEAN -519.1 8.5 -172.2 -2.7 -128.5 1.4 16.9 ****** 3.7 ------------------------------------------------------------------------------- STAN MEAN -5.6 0.2 -23.4 -0.6 40.8 1.1 0.9 82.6 0.1 STAE MEAN -55.8 -11.9 -27.0 0.1 9.1 -0.5 6.7 63.3 -0.4 STAU MEAN -767.4 12.5 -203.7 -3.6 -248.0 0.5 25.6 ****** 4.7 NKG OLG ROB UPA WUT --------------------------------------------------- STAX MEAN 3.3 47.1 -5.3 84.3 -11.6 STAY MEAN 1.6 -44.6 0.8 -88.1 -10.6 STAZ MEAN -6.9 -14.8 -4.2 -56.1 -20.7 --------------------------------------------------- STAN MEAN -6.8 -31.5 1.1 -84.0 -1.1 STAE MEAN 0.6 -57.3 1.0 -102.7 -6.9 STAU MEAN -4.4 8.2 -6.7 6.1 -24.7 ------------------------------------------------------------------------------- TABLE 5: COMPARISON OF STATION COORDINATES AFTER HELMERT TRANSFORMATION: ------------------------------------------------------------------------------- COMBINATION GPSWEEK 1127, EUROPE ------------------------------------------------------------------------------- PROCESSED FILES : 13 TOTAL NUMBER OF STATIONS: 112 ------------------------------------------------------------------------------- 0000000001111 RESIDUAL RMS IN MM STATION #FILES 1234567890123 N E U ------------------------------------------------------------------------------- ALAC 13433M001 4 MM M M 1.2 1.0 5.1 BELL 13431M001 4 MM M M 1.5 0.8 9.2 BZRG 12751M001B 3 MM M 2.4 3.5 8.6 CAME 12754M001 4 MM M M 1.4 1.8 2.6 CANT 13438M001 4 M M M M 1.0 1.2 5.3 DUBR 11901M001 3 M M M 1.0 0.5 3.2 EBRE 13410M001 4 MM MM 0.8 1.1 4.5 GENO 12712M002 3 MM M 1.5 2.5 4.8 LAMP 12706M002 4 MMM M 2.8 4.0 4.1 MATE 12734M008 4 NNN N 0.9 1.5 6.0 NOT1 12717M004 3 MM M 2.7 1.4 4.8 SFER 13402M004 4 MM M M 1.8 3.9 2.7 TORI 12724M002 3 MM M 2.8 1.6 4.5 UNPG 12752M001 3 MM M 0.3 0.3 3.0 VENE 12741M001B 4 MM M M 1.8 0.5 3.8 VILL 13406M001 4 NN NN 1.0 1.0 3.2 WTZR 14201M010 4 N N N N 1.9 1.2 3.1 MEDI 12711M003 3 MM M 1.4 0.8 4.4 ACOR 13434M001 4 M M M M 0.9 1.0 4.9 ANKR 20805M002 3 MMM 1.1 1.1 2.9 ISTA 20807M001 3 MM M 0.4 1.3 3.3 CASC 13909S001 4 M MM M 2.2 1.8 3.2 CAGL 12725M003 2 M M 1.1 2.1 1.4 CREU 13432M001 3 M M M 0.6 4.7 4.2 ESCO 13435M001 4 M M M M 0.7 1.9 3.5 GRAS 10002M006 2 N N 0.7 1.3 2.8 RABT 35001M002 3 MM M 1.0 3.0 0.7 BUCU 11401M001 4 MM M M 0.5 3.3 2.9 SOFI 11101M002 3 MM M 0.5 1.1 1.6 TUBI 20806M001 4 MM M M 0.8 1.1 4.5 GSR1 14501M001B 3 M M M 0.6 0.7 3.8 TLSE 10003M009 4 M M M M 1.1 0.5 8.0 ZIMM 14001M004 4 M M M M 1.1 0.5 3.2 NICO 14302M001 3 MM M 1.3 1.4 5.6 RAMO 20703S001B 3 M M M 3.2 3.9 3.2 TRAB 20808M001 4 MM M M 1.3 2.3 6.2 MAS1 31303M002 3 M MM 1.9 1.8 4.2 UPAD 12750M002 4 M M M M 0.7 0.7 5.2 LLIV 13436M001 4 M MM M 0.6 2.8 4.2 ALME 13437M001 4 MMM M 1.6 1.9 3.7 YEBE 13420M001 4 M M M M 1.8 1.1 2.6 BORK 14268M001 3 M M M 0.8 0.3 1.4 OSJE 11902M001 3 M M M 0.6 0.9 0.9 BRST 10004M004 3 M M M 1.6 1.3 2.4 BRUS 13101M004 3 M M M 0.3 0.0 3.6 HELG 14264M001 3 MM M 0.1 0.2 3.0 HOFN 10204M002 4 MM M M 1.7 1.2 5.9 HOBU 14202M003 3 M MM 0.7 0.6 2.7 KOSG 13504M003 3 N N N 0.1 0.4 0.9 NPLD 13234M003 3 MM M 0.3 0.2 3.3 ONSA 10402M004 4 N N N N 0.5 0.5 3.6 STAS 10330M001 3 M MM 2.2 0.4 4.3 DRES 14108M001 3 M M M 0.9 0.8 3.1 KARL 14216M001B 3 M MM 0.6 2.3 4.9 KLOP 14214M002B 3 M M M 0.3 0.2 3.6 EUSK 14258M003B 3 M M M 0.6 0.3 1.5 METS 10503S011 3 M M M 0.5 2.4 2.2 POTS 14106M003 3 N N N 0.3 0.7 1.2 WROC 12217M001 3 M M M 0.4 0.4 1.6 GLSV 12356M001 3 MM M 0.9 2.9 2.6 GRAZ 11001M002 3 N N N 0.8 0.5 5.2 REYK 10202M001 3 NN N 2.0 1.8 3.8 KIRU 10403M002B 3 MM M 1.2 2.8 1.9 VIL0 10424M001 3 MM M 1.3 0.3 1.1 ZWEN 12330M001 2 M M 0.3 1.3 4.5 MALL 13444M001 3 M M M 0.9 0.9 6.6 PFAN 11005S002 3 M M M 0.5 0.2 2.9 PTBB 14234M001 4 MM MM 0.1 0.3 3.1 SBGZ 11031S001 3 M M M 1.1 0.6 2.1 ZECK 12351M001 3 MM M 1.0 0.9 3.5 TRDS 10331M001 3 M M M 0.8 0.5 0.8 BOR1 12205M002 3 N N N 0.2 0.4 2.3 DELF 13502M004 3 M M M 0.2 0.1 2.6 TERS 13534M001 3 M M M 0.4 0.4 2.8 DOUR 13113M001 3 M M M 0.2 0.2 5.1 LAMA 12209M001B 3 M M M 0.8 1.9 5.8 JOEN 10512M001 3 M M M 0.4 2.2 1.8 MDVO 12309M002 3 M M M 1.4 2.0 2.7 TRO1 10302M006 3 N N N 0.4 1.2 4.8 KIR0 10422M001 3 M M M 0.5 0.4 1.7 MAR6 10405M002 3 M M M 0.3 0.1 3.4 PDEL 31906M004 3 MM M 0.4 1.6 6.0 NYA1 10317M003 3 N N N 2.3 1.6 4.0 PENC 11206M006 3 M M M 1.2 5.1 1.9 SODA 10513M001 3 M MM 0.6 1.2 2.6 VAAS 10511M001 3 M MM 1.0 0.6 1.5 BOGO 12207M002 3 M M M 0.6 1.6 5.0 GAIA 13902M001 2 M M 2.5 3.9 5.9 LAGO 13903M001 2 M M 1.0 8.5 3.9 CHIZ 10020M001 4 MMM M 1.3 1.5 5.4 MARS 10073M008 3 M M M 1.5 1.7 7.6 EIJS 13533M001 3 M M M 0.8 0.1 0.8 VIS0 10423M001 3 M MM 0.8 0.8 2.6 DRAG 20710S001 3 M M M 1.8 1.8 1.8 MANS 10091M001 3 MM M 0.8 0.7 4.1 GOPE 11502M002 3 M M M 0.5 0.4 3.3 MOPI 11507M001 2 M M 0.9 0.2 8.1 VALE 13439M001 1 M - - - OSLS 10307M001 3 M M M 1.4 0.9 2.9 RIGA 12302M002 3 M M M 0.8 4.0 2.5 UZHL 12301M001 3 M M M 0.5 0.7 5.5 SVTL 12350M001 3 M M M 0.5 2.0 3.0 AJAC 10077M005 1 M - - - DENT 13112M001 3 MM M 1.7 0.6 3.7 WARE 13114M001 3 MM M 1.8 0.8 4.2 SJDV 10090M001 2 M M 1.0 1.2 7.6 MLVL 10092M001B 3 MM M 0.9 1.0 2.2 WSRT 13506M005 3 MM M 0.4 0.3 2.3 JOZE 12204M001 3 MM M 0.8 0.6 3.1 KELY 43005M001 2 M M 2.2 2.2 5.9 VARS 10322M002 3 MM M 2.1 8.3 5.4 HFLK 11006S003 3 M MM 0.4 0.9 6.6 ------------------------------------------------------------------------------- FLAGS: M: MEAN, F: FIXED, N: FREE NETWORK RESTRICTIONS 1 ------------------------------------------------------------------------------- UNWEIGHTED RMS VALUES WITH RESPECT TO THE COMBINED SOLUTION IN MM ------------------------------------------------------------------------------- PROCESSED FILES : 13 TOTAL NUMBER OF STATIONS: 112 ------------------------------------------------------------------------------- FILE GRP #SITES COV.COMP. COMPONENT RMS --------------------------------------------------- N 2.4 1 ASI 18 0.0160 E 2.9 U 4.0 --------------------------------------------------- N 0.6 2 BEK 36 0.0200 E 1.5 U 5.1 --------------------------------------------------- N 0.7 3 BKG 44 0.0200 E 0.9 U 2.8 --------------------------------------------------- N 1.0 4 COE 35 0.0040 E 1.2 U 3.2 --------------------------------------------------- N 1.3 5 DEO 22 0.0160 E 2.9 U 5.1 --------------------------------------------------- N 0.6 6 GOP 27 0.0200 E 0.7 U 4.1 --------------------------------------------------- N 1.2 7 IGN 21 0.0200 E 1.0 U 2.7 --------------------------------------------------- N 0.7 8 LPT 18 0.0200 E 0.4 U 1.7 --------------------------------------------------- N 0.9 9 NKG 30 0.0200 E 1.0 U 2.8 --------------------------------------------------- N 1.2 10 OLG 32 0.0200 E 0.8 U 1.9 --------------------------------------------------- N 0.8 11 ROB 24 0.0200 E 0.7 U 2.9 --------------------------------------------------- N 0.7 12 UPA 16 0.0200 E 1.2 U 3.3 --------------------------------------------------- N 1.1 13 WUT 28 0.0200 E 3.4 U 3.6 --------------------------------------------------- N 1.0 MEAN 112 E 1.6 U 3.4