************************************************************************* IGS-RNAAC-SIR ANALYSIS REPORT COMBINATION OF THE SIRGAS-CON NETWORK FOR GPS WEEK 1538 (DAYS 179-185 DATES 28-06-2009 - 04-07-2009) ************************************************************************* Responsible: Deutsches Geodaetisches Forschungsinstitut (DGFI) Laura Sanchez (sanchez@dgfi.badw.de) Wolfgang Seemueller (seemueller@dgfi.badw.de) The SIRGAS-CON network comprises a core network (SIRGAS-CON-C) with continental coverage and three densification sub-networks (SIRGAS-CON-D): northern (Mexico, Central America, the Caribbean, Colombia, Venezuela), middle (Brazil, Ecuador, Peru, Bolivia, Suriname, Guyana, French Guyana), and southern (Uruguay, Paraguay, Argentina, Chile, Antarctica). These networks are weekly processed by four analysis centres, which deliver loosely constrained solutions for station coordinates in SINEX (Software INdependent EXchange) format to be combined in a unified solution for all SIRGAS-CON stations. (For more information see: www.sirgas.org). This report describes the main features of the weekly combination. ************************************************************************* Contributing solutions (PC) ************************************************************************* 1) CIM: Instituto de Geodesia y Geodinamica, Universidad Nacional de Cuyo (Mendoza, Argentina), in charge of processing the southern densification sub-network. Responsible: Maria Virginia Mackern (vmackern@lab.cricyt.edu.ar). 2) DGF: Deutsches Geodaetisches Forschungsinstitut (Munich, Germany), in charge of processing the core network SIRGAS-CON-C. Responsible: Wolfgang Seemueller (seemueller@dgfi.badw.de). 3) IBG: Instituto Brasileiro de Geografia e Estatistica (Rio de Janeiro, Brazil), in charge of processing the middle densification sub-network. Responsible: Alberto da Silva (alberto.luis@ibge.gov.br). 4) IGA: Instituto Geografico Agustin Codazzi (Bogota, Colombia), in charge of processing the northern densification sub-network. Responsible: William Martinez (wamartin@igac.gov.co). ************************************************************************* Combination strategy ************************************************************************* 1) Individual solutions are reviewed/corrected for possible format problems, station inconsistencies, etc. 2) Constraints included in the delivered normal equations are removed. 3) Sub-networks are individually aligned to the IGS05 reference frame by applying the No Net Rotation (NNR) and No Net Translation (NNT) conditions. The included IGS05 reference stations are: BRAZ 41606M001 CHPI 41609M003 CONZ 41719M002 CRO1 43201M001 GLPS 42005M002 GOLD 40405S031 ISPA 41703M007 LPGS 41516M001 MANA 41201S001 MDO1 40442M012 PIE1 40456M001 SANT 41705M003 SCUB 40701M001 4) Coordinates obtained in (3) for each processing centre are compared to IGS05 and to each other to identify possible outliers. 5) Stations with large residuals (more than 10 mm in the N-E component, and more than 20 mm in the Up component) are reduced from the normal equations. Steps (3), (4), and (5) are iterative. 6) Variances obtained in the final computation of step (3) are analyzed to compute scaling factors for relative weighting of the individual solutions. 7) Combination of the contributing normal equations for computing a loosely constrained weekly solution for station coordinates (all station coordinates are constrained to 1 m). This solution is submitted to IGS for the global polyhedron. 8) Computation of a constrained weekly solution for station coordinates. Datum realization through IGS weekly coordinates (igs09P1538.snx) of the IGS05 stations listed in (3) (applied constraint in Bernese Software: 1E-04 m). This solution provides the final SIRGAS-CON coordinates for practical applications (see Results). Note: Normal equations are added and solved by applying the BERNESE software V. 5.0, UNIX platform. ************************************************************************* Results ************************************************************************* SIR15387.SNX covariance matrix loosely constrained weekly combination SIR15387.SUM this text file sir09P1538.snx covariance matrix constrained weekly combination sir09P1538.crd final SIRGAS-CON coordinates for week 1538 The loosely constrained solution (SIR15387.SNX, SIR15387.SUM) and final SIRGAS-CON coordinates (SIR08P1538.SNX, SIR08P1538.CRD) are available at ftp://ftp.dgfi.badw-muenchen.de/pub/gps/SIRGAS/1538/ or at http://www.sirgas.org/index.php?id=153. ************************************************************************* FILES SENT TO GLOBAL IGS DATA CENTERS: ************************************************************************* SIR15387.SNX SINEX FILE FOR WEEK 1538 SIR15387.SUM SUMMARY FILE FOR WEEK 1538 ************************************************************************* Report ************************************************************************* EQUIPMENT INCONSISTENCIES ************************* Station PC Wrong (applied) Correct (to be applied) --------------------------------------------------------------------------- RIOP 42006M001 IBG Receiver TRIMBLE 4000SSI -> TRIMBLE NETRS Antenna TRM29659.00 NONE -> TRM41249.00 NONE EXCLUDED/MISSING STATIONS ************************* Station PC Comments --------------------------------------------------------------------------- ANTC 41713S001 CIM Missing station in CIM solution BUEN 41912S001 DGF Missing station in DGF solution CRCS 42401M001 IGA Missing station in IGA solution ICEP 40531M001 IGA Missing station in IGA solution MARA 42402M001 IGA Missing station in IGA solution PSTO 41925S001 DGF Missing station in DGF solution RIOP 42006M001 IBG Station reduced form IBG solution because wrong antenna generates a jump of ~ 20 mm in Up. RMS VALUES ********** (a posteriori RMS of unit weight after aligning the individual solutions to the IGS05 reference stations) PC No. Stations RMS [mm] Chi**2/DOF ------------------------------------------------ CIM 45 1.55 0.60 DGF 87 1.52 0.58 IBG 81 1.62 0.66 IGA 68 1.59 0.63 ================================================ Combination 160 1.57 0.62 RESIDUALS WITH RESPECT TO igs09P1538 SOLUTION ********************************************** N [mm] E[mm] Up [mm] ------------------------------------------------- IGS05 Stations (13) 1.3 1.0 1.1 All IGS Stations (35) 2.1 1.8 4.5 RESIDUALS WITH RESPECT TO sir09P1537 SOLUTION ********************************************** N [mm] E[mm] Up [mm] ------------------------------------------------- All stations (155) 1.6 1.4 4.0 TRANSFORMATION PARAMETERS BETWEEN THE INDIVIDUAL SOLUTIONS AND THE FINAL COMBINATION ********************************************************** Translation (m) Rotation (") Sol Rms (m) X Y Z X Y Z Scale (ppm) --------------------------------------------------------------------------- CIM 0.00063 -0.0002 0.0004 0.0004 -0.0000 -0.0000 0.0000 0.00006 DGF 0.00117 -0.0021 0.0009 0.0011 -0.0000 0.0000 -0.0001 0.00011 IBG 0.00090 0.0000 0.0009 -0.0005 0.0000 -0.0000 0.0000 0.00014 IGA 0.00101 -0.0019 0.0001 -0.0029 0.0001 -0.0000 -0.0001 0.00001 COMPARISON OF STATION COORDINATES ********************************* (Repeatability represents the consistency between the individual solutions) PCs: (1) CIM, (2) DGF, (3) IBG, (4) IGA ---------------------------------------------------- Total number of stations: 160 ---------------------------------------------------- PCs Repeatability (mm) Station #Sols 1234 N E U ---------------------------------------------------- ALAR 41653M001 1 X 0.04 0.53 0.51 ALUM 41535M001 1 X 0.07 0.02 0.18 ANTC 41713S001 1 X 0.08 0.12 0.07 APTO 41933S001 2 X X 0.06 0.12 1.91 AREQ 42202M005 4 XXXX 0.31 0.35 1.16 AUTF 41515S001 1 X 0.18 0.01 0.16 AZUL 41529M001 1 X 0.02 0.02 0.01 BAIR 41665M001 1 X 0.04 0.24 0.28 BANS 42403M001 1 X 0.09 0.10 0.31 BATF 41666M001 1 X 0.01 0.09 0.22 BDOS 43401M001 2 X X 1.06 1.32 5.08 BELE 41622M001 2 XX 1.07 0.14 5.29 BERR 41910S001 2 X X 0.31 0.98 5.18 BOAV 41636M001 2 XX 0.25 0.19 2.42 BOGA 41901M002 1 X 0.03 0.03 0.04 BOGT 41901M001 4 XXXX 0.19 0.65 2.30 BOMJ 41612M001 2 XX 0.25 0.19 0.30 BRAZ 41606M001 4 XXXX 0.54 0.54 2.14 BRFT 41602M002 4 XXXX 0.81 1.14 1.97 BRMU 42501S004 2 X X 3.94 1.23 2.94 BUEN 41912S001 1 X 0.12 0.07 0.33 CASI 41914S001 1 X 0.03 0.08 0.04 CATA 41534M001 1 X 0.07 0.02 0.15 CBSB 80402M001 2 X X 0.58 0.53 5.57 CEEU 41602M003 1 X 0.05 0.58 0.17 CEFE 41637M001 1 X 0.01 0.07 0.43 CFAG 41517S001 3 XXX 0.22 0.14 1.03 CHET 40526M001 1 X 0.13 0.08 0.27 CHIH 40525M001 2 X X 0.35 0.35 0.58 CHPI 41609M003 4 XXXX 0.58 0.70 1.37 CIC1 40508M002 2 X X 0.72 0.29 1.17 COL2 40524M001 1 X 0.03 0.15 0.08 CONZ 41719M002 3 XXX 0.23 0.23 0.71 COPO 41714S001 2 XX 0.15 0.25 0.36 CRAT 41619M001 2 XX 0.84 1.05 2.36 CRCS 42401M001 1 X 0.08 0.01 0.26 CRO1 43201M001 4 XXXX 0.48 0.73 1.54 CUCU 41904S001 2 X X 0.08 0.16 1.31 CUEC 42009M001 1 X 0.05 0.42 0.17 CUIB 41603M001 2 XX 0.20 0.42 1.08 CULC 40529M001 1 X 0.14 0.27 0.01 DAVI 41302M001 1 X 0.12 0.03 0.39 ESMR 42011M001 1 X 0.06 0.38 0.32 ESQU 41533M001 2 XX 0.08 0.26 0.92 FLOR 41916S001 1 X 0.10 0.08 0.40 FQNE 41936S001 1 X 0.00 0.04 0.07 GCGT 80401M001 2 X X 0.65 0.52 4.63 GLPS 42005M002 4 XXXX 0.42 1.08 2.07 GOJA 41654M001 1 X 0.03 0.05 0.52 GOLD 40405S031 2 X X 0.56 0.46 1.54 GRE0 43501S001 2 X X 1.37 0.67 3.58 GTK0 43602S007 2 X X 0.36 0.47 4.52 GUAT 40901S001 2 X X 0.20 0.52 1.00 GVAL 41623M001 2 XX 0.41 0.18 4.19 GYEC 42007M001 1 X 0.06 0.42 0.27 HER2 40522M001 2 X X 0.47 0.25 0.70 ICAM 40514M002 1 X 0.12 0.10 0.32 IDGO 40532M001 1 X 0.08 0.25 0.22 IGM1 41505M003 1 X 0.04 0.02 0.03 IGN1 41303M001 2 X X 0.04 0.24 0.76 IMBT 41638M001 2 XX 0.50 0.04 1.45 IMPZ 41615M001 2 XX 0.20 0.02 1.12 INEG 40507M001 2 X X 0.28 0.57 1.28 IQQE 41708S002 4 XXXX 0.24 0.83 0.95 ISPA 41703M007 4 XXXX 0.93 0.63 1.12 KOUR 97301M210 4 XXXX 0.68 0.92 1.82 LHCL 41518S001 2 XX 0.10 0.15 0.31 LJEC 42010M001 2 XX 0.14 0.76 1.74 LPAZ 40521M001 2 X X 0.65 0.69 1.27 LPGS 41510M001 3 XXX 0.22 0.11 1.07 MABA 41642M001 1 X 0.00 0.03 0.46 MAGA 41920S001 1 X 0.02 0.10 0.14 MANA 41201S001 4 XXXX 0.59 0.49 0.85 MAPA 41629M001 2 XX 0.23 0.63 1.36 MARA 42402M001 1 X 0.01 0.06 0.33 MCLA 41624M001 1 X 0.03 0.09 0.38 MDO1 40442M012 2 X X 0.41 0.72 1.47 MERI 40520M001 2 X X 0.05 0.93 0.44 MEXI 40519M001 1 X 0.42 0.48 0.59 MGBH 41667M001 1 X 0.01 0.07 0.44 MGIN 41647M001 1 X 0.03 0.02 0.49 MGMC 41624M002 1 X 0.02 0.12 0.38 MGUB 41652M001 1 X 0.04 0.01 0.42 MSCG 41649M001 1 X 0.02 0.06 0.52 MTBA 41663M001 1 X 0.07 0.10 0.56 MTSF 41655M001 1 X 0.02 0.01 0.56 MTY2 40518M001 2 X X 0.46 0.21 0.27 MZAC 41503M001 2 XX 0.12 0.08 1.22 MZAE 41530M001 1 X 0.03 0.03 0.07 MZAS 41528M001 1 X 0.02 0.03 0.04 NAS0 43607S001 2 X X 0.37 0.75 3.39 NAUS 41614M002 2 XX 0.34 0.21 6.31 NEIA 41620M002 1 X 0.04 0.00 0.58 NEVA 41923S001 2 X X 0.06 0.29 1.15 OAX2 40517M001 2 X X 0.37 0.68 1.67 OHI2 66008M005 3 XXX 1.09 0.57 6.21 ONRJ 41635M001 2 XX 0.32 0.27 1.65 PALM 66005M002 2 XX 0.59 0.92 2.94 PBCG 41656M001 1 X 0.03 0.55 0.07 PEPE 41650M001 1 X 0.03 0.33 0.14 PIE1 40456M001 2 X X 0.43 0.61 1.73 PMB1 43702S001 1 X 0.02 0.03 0.08 POAL 41616M001 1 X 0.05 0.04 0.64 POLI 41630M001 1 X 0.03 0.01 0.51 POPA 41924S001 1 X 0.12 0.01 0.34 POVE 41628M001 4 XXXX 0.20 0.57 1.25 PPTE 41611M002 2 XX 0.30 0.20 1.85 PSTO 41925S001 1 X 0.18 0.05 0.53 PTEC 42008M001 1 X 0.07 0.41 0.29 QUI1 42003S003 2 XX 0.20 0.42 2.86 RECF 41617M001 2 XX 0.09 1.63 4.50 RIO2 41507M006 3 XXX 0.56 0.38 0.86 RIOB 41645M001 2 XX 0.45 0.50 1.42 RIOD 41608M001 1 X 0.03 0.04 0.50 RIOP 42006M001 3 XX X 0.26 0.81 1.65 RNMO 41664M001 1 X 0.04 0.55 0.12 RNNA 41668M001 1 X 0.04 0.54 0.11 ROJI 41658M001 2 XX 0.35 0.66 0.81 RWSN 41513M001 2 XX 0.13 0.40 0.21 SAGA 41639M001 2 XX 0.74 0.53 0.73 SALU 41640M001 3 XXX 0.93 0.63 1.16 SAMA 41928S001 1 X 0.00 0.11 0.35 SANT 41705M003 4 XXXX 1.01 0.33 1.17 SAVO 41643M001 2 XX 1.28 0.51 7.16 SCCH 41659M001 1 X 0.04 0.05 0.59 SCLA 41660M001 1 X 0.04 0.03 0.60 SCUB 40701M001 4 XXXX 0.39 0.48 1.63 SMAR 41621M001 2 XX 0.29 0.04 1.76 SMRT 43102S001 2 X X 0.69 1.29 3.73 SRLP 41532M001 1 X 0.01 0.01 0.04 SRNW 43703M001 2 XX 3.26 1.64 3.42 SRZN 43701S005 1 X 0.02 0.04 0.11 SSA1 41644M001 1 X 0.08 0.34 0.03 SSIA 41401S001 2 X X 0.19 0.33 1.23 TAMP 40516M001 1 X 0.05 0.21 0.31 TERO 41531M001 1 X 0.08 0.02 0.16 TOGU 41661M001 1 X 0.03 0.00 0.55 TOL2 40515M001 2 X X 0.36 0.50 1.20 TOPL 41648M001 2 XX 0.17 0.21 1.89 TUCU 41520S001 2 XX 0.13 0.02 1.23 TUNA 41930S001 1 X 0.00 0.04 0.05 UBAT 41627M001 1 X 0.04 0.02 0.52 UBER 41625M001 2 XX 0.17 0.09 0.93 UCOR 41502M001 2 XX 0.80 0.34 1.07 UFPR 41610M002 2 XX 0.32 0.05 0.98 UGTO 40528M001 1 X 0.00 0.18 0.12 UNRO 41525M001 1 X 0.05 0.00 0.08 UNSA 41514M001 4 XXXX 0.50 0.39 3.32 UNSJ 41527M001 1 X 0.04 0.03 0.11 USLP 40530M001 1 X 0.00 0.20 0.20 UYMO 42301M001 2 XX 0.34 0.07 0.25 UYRO 42303M001 1 X 0.06 0.04 0.02 UYTA 42302M001 1 X 0.07 0.02 0.03 VALL 41906S001 1 X 0.01 0.09 0.18 VARG 41626M001 1 X 0.03 0.03 0.46 VBCA 41512M001 2 XX 0.13 0.20 1.32 VESL 66009M001 2 XX 1.85 1.10 1.92 VICO 41613M001 1 X 0.02 0.05 0.44 VIL2 40527M001 1 X 0.11 0.10 0.12 VIVI 41931S001 1 X 0.02 0.00 0.06 ---------------------------------------------------- Total 281 0.73 0.66 2.36 ----------------------------------------------------