========================================================================= IGS-RNAAC-SIR ANALYSIS REPORT COMBINATION OF THE SIRGAS-CON NETWORK FOR GPS WEEK 1677 (DAYS 057-063 DATES 26-02-2012 - 03-03-2012) ========================================================================= Responsible: Deutsches Geodaetisches Forschungsinstitut (DGFI) Laura Sanchez (sanchez@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 7 analysis centres, which deliver loosely constrained solutions for station positions in SINEX (Software INdependent EXchange) format to be combined in a unified solution. Each regional SIRGAS-CON station is processed by three Analysis Centres. (For more information see: www.sirgas.org). This report describes the main features of the weekly combination. ========================================================================= Contributing solutions (PC) ========================================================================= CIM - Centro de Procesamiento Ingenieria-Mendoza-Argentina, Universidad Nacional de Cuyo (Argentina) DGF - Deutsches Geodaetisches Forschungsinstitut (Germany) ECU - CEPGE, Instituto Geografico Militar (Ecuador) GNA - Instituto Geografico Nacional (Argentina) IBG - Instituto Brasileiro de Geografia e Estatistica (Brazil) IGA - Instituto Geografico Agustin Codazzi (Colombia) INE - Instituto Nacional de Estadistica y Geografia (Mexico) LUZ - CPAGS, Universidad del Zulia (Venzuela) URY - Servicio Geografico Militar (Uruguay) ========================================================================= 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 IGS reference frame. Until the GPS week 1631 (April 16, 2011), the IGS05 reference frame was used. Since the GPS week 1632 (April 17, 2011), the IGS08 reference frame is used (see IGS messages [IGSMAIL-6354], [IGSMAIL-6355], [IGSMAIL-6356]). The fiducial stations are: BOGT 41901M001 BRAZ 41606M001 BRFT 41602M002 BRMU 42501S004 CONZ 41719M002 CRO1 43201M001 GOLD 40405S031 ISPA 41703M007 LPGS 41510M001 MDO1 40442M012 OHI2 66008M005 PALM 66005M002 PARC 41716S001 SCUB 40701M001 UNSA 41514M001 VESL 66009M001 4) Coordinates obtained in (3) for each processing centre are compared 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 positions (a priori positions for all station are constrained to 1 m). This solution is submitted to IGS for the global polyhedron. 8) Computation of a solution for station positions aligned to the IGS Reference Frame. Datum realization through IGS weekly coordinates (igs12P1677.snx) of the IGS reference stations listed in (3) (applied constraint in Bernese Software: 1E-04 m). This solution provides the final SIRGAS-CON positions for practical applications (see Results). Until the GPS week 1631 (April 16, 2011), the IGS05 reference frame was used. Since the GPS week 1632 (April 17, 2011), the IGS08 reference frame is used (see IGS messages [IGSMAIL-6354], [IGSMAIL-6355], [IGSMAIL-6356]). Note: Normal equations are added and solved by applying the BERNESE software V. 5.0, UNIX platform. ========================================================================= Results ========================================================================= SIR16777.SNX covariance matrix loosely constrained weekly combination SIR16777.SUM this text file sir09P1677.snx covariance matrix constrained weekly combination sir09P1677.crd final positions for week 1677 The loosely constrained solution (SIR16777.SNX, SIR16777.SUM) and final coordinates (SIR08P1677.SNX, SIR08P1677.CRD) are available at ftp://ftp.sirgas.org/pub/gps/SIRGAS/1677/ or at http://www.sirgas.org/index.php?id=153. ========================================================================= FILES SENT TO GLOBAL IGS DATA CENTERS: ========================================================================= SIR16777.SNX SINEX FILE FOR WEEK 1677 SIR16777.SUM SUMMARY FILE FOR WEEK 1677 ========================================================================= Report ========================================================================= EQUIPMENT INCONSISTENCIES ------------------------- Station PC Wrong (applied) Correct (to be applied) --------------------------------------------------------------------------- PRNA 41554M001 GNA Antenna ASH700718A NONE -> ASH700718B NONE SL01 41543M001 GNA Antenna TRM57971.00 NONE -> TRM57971.00 TZGD Note: PCV for TRM57971.00 TZGD are adopted from TRM57971.00 NONE. So, there is not any inconsistency with repect the other individual solutions. MISSING STATIONS **************** (Stations with available observations that are not included in the individual solutions for this week) Station PC Comments --------------------------------------------------------------------------- ESQU 41533M001 CIM Missing station in CIM solution CRCS 42401M001 IGA Missing station in IGA solution AUCA 42017M001 LUZ Missing station in LUZ solution BAIR 41665M001 URY Missing station in URY solution BATF 41666M001 URY Missing station in URY solution CEEU 41602M003 URY Missing station in URY solution CEFE 41637M001 URY Missing station in URY solution EXCLUDED STATIONS ***************** Station PC Comments ---------------------------------------------------------------------- PRNA 41554M001 GNA Reduced from GNA solution because wrong antenna CHIH 40525M001 INE Renamed station CHI3 40525M001 -> CHIH 40525M001 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 Variance factor ------------------------------------------------------------------ CIM 108 1.59 0.63 1.0 DGF 98 1.56 0.61 1.0 ECU 68 1.57 0.61 1.0 GNA 63 2.00 1.00 0.8 IBG 135 1.80 0.81 0.9 IGA 87 1.57 0.62 1.0 INE 33 2.03 1.03 0.8 LUZ 86 1.57 0.62 1.0 URY 71 1.58 0.63 1.0 ================================================================== Combination 211 1.62 0.66 ---- RESIDUALS WITH RESPECT TO igs11P1677 SOLUTION --------------------------------------------- N [mm] E[mm] Up [mm] ---------------------------------------------------- IGS08 core stations (16) 1.7 1.7 1.1 All IGS Stations (43) 1.6 1.8 4.1 RESIDUALS WITH RESPECT TO sir11P1676 SOLUTION --------------------------------------------- N [mm] E[mm] Up [mm] ---------------------------------------------------- All stations (198) 1.3 1.2 3.4 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 0.00266 -0.0014 -0.0013 0.0077 -0.0002 -0.0001 -0.0001 0.00112 DGF 0.00127 0.0009 0.0005 -0.0002 0.0000 0.0000 0.0000 -0.00013 ECU 0.00271 -0.0030 0.0026 0.0026 -0.0001 -0.0000 -0.0000 -0.00012 GNA 0.00266 0.0056 0.0002 0.0009 -0.0000 -0.0001 0.0001 -0.00006 IBG 0.00142 0.0024 0.0004 0.0003 -0.0000 -0.0000 0.0001 -0.00025 IGA 0.00097 -0.0011 0.0013 0.0020 -0.0000 -0.0000 -0.0000 -0.00005 INE 0.00240 -0.0027 0.0038 0.0070 -0.0002 0.0000 -0.0001 0.00058 LUZ 0.00116 -0.0018 0.0008 -0.0009 0.0000 -0.0000 -0.0001 -0.00001 URY 0.00164 0.0007 -0.0033 0.0012 -0.0001 0.0000 -0.0000 -0.00050 COMPARISON OF STATION POSITIONS ------------------------------- (Repeatability represents the consistency between the individual solutions) PCs: (1) CIM, (2) DGF, (3) ECU, (4) GNA, (5) IBG, (6) IGA, (7) INE, (8) LUZ, (9) URY ---------------------------------------------------- Total number of stations: 211 ---------------------------------------------------- PCs Repeatability (mm) Station #PCs 1234567 N E U 89 ---------------------------------------------------- ABCC 41939M001 3 X X 0.20 0.79 2.20 X ABMF 97103M001 4 X XX 0.86 0.50 2.64 X ABPD 41941M001 3 X X 0.42 0.39 3.23 X ABPW 41940M001 3 X X 0.19 0.53 1.84 X AGUA 41907S001 3 X X 0.91 0.48 5.01 X ALAR 41653M001 3 X X 0.90 3.50 2.82 X ALUM 41535M001 3 X XX 0.42 1.92 2.29 ANTC 41713S001 4 XX XX 0.63 3.54 4.32 ARCA 41909S001 3 X X 0.35 0.45 2.15 X AREQ 42202M005 8 XXXXXX 0.52 1.08 2.58 XX AUCA 42017M001 2 X X 0.49 0.35 1.51 AUTF 41515S001 3 X XX 2.30 0.46 1.00 AZUL 41529M001 3 X XX 0.89 0.68 0.96 BABR 41684M001 3 X X X 1.64 2.62 6.52 BAIR 41665M001 2 X X 1.06 3.56 3.12 BATF 41666M001 2 X X 0.42 0.75 2.28 BAVC 41669M001 3 XX 0.55 0.61 4.33 X BCAR 41539M001 3 X X 0.85 0.64 1.72 X BDOS 43401M001 3 X X 1.00 0.84 1.71 X BELE 41622M001 3 X X 1.13 1.40 3.08 X BERR 41910S001 3 X X 0.29 0.20 0.94 X BNGA 41911M001 3 X X 0.14 0.89 4.86 X BOAV 41636M001 4 X XX 0.29 0.18 2.63 X BOGA 41901M002 3 X X 0.31 0.60 7.95 X BOGT 41901M001 7 XX XXXX 1.26 0.83 3.74 X BOMJ 41612M001 3 XX X 0.81 0.66 3.12 BRAZ 41606M001 8 XXXXXX 0.73 0.74 3.27 XX BRFT 41602M002 6 XX XXX 1.30 2.26 3.18 X BRMU 42501S004 4 X XX 0.70 0.46 2.30 X BUEN 41912S001 3 X X 0.26 0.42 3.29 X CALI 41903S001 3 X X 0.59 0.95 3.68 X CALL 42205M001 4 XXX X 0.87 2.61 5.90 CATA 41534M001 3 X XX 0.71 1.48 3.15 CEEU 41602M003 2 X X 1.22 5.39 2.73 CEFE 41637M001 2 X X 0.48 3.32 5.22 CEFT 41682M001 3 XX 0.29 0.80 1.69 X CHAC 41553M001 3 XX X 0.46 1.67 2.13 CHET 40526M001 3 XX 0.52 0.46 4.09 X CHIH 40525M001 4 X XX 0.67 0.46 1.33 X CHPI 41609M003 7 XX XXX 0.91 1.80 3.75 XX COL2 40524M001 3 XX 2.39 0.46 1.15 X CONZ 41719M002 5 XX XX 0.36 0.79 1.97 X COPO 41714S001 4 XX XX 0.38 2.17 2.20 COYQ 41715S001 5 XX XX 1.21 1.11 1.45 X CRAT 41619M001 3 XX X 3.53 1.14 1.26 CRCS 42401M001 3 X X 0.29 0.44 2.16 X CRO1 43201M001 8 XXXXXXX 2.22 1.04 4.30 X CSLO 41540M001 3 X XX 0.62 2.69 1.89 CUCU 41904S001 3 X X 0.19 0.38 0.74 X CUEC 42009M001 3 X X X 1.49 2.63 4.94 CUIB 41603M001 3 X X 0.38 0.40 2.53 X CULC 40529M001 3 XX 0.52 1.03 2.60 X CUM3 42404M001 4 X XX 0.64 0.68 5.48 X DARI 41305M001 3 X X 0.67 0.79 0.25 X DAVI 41302M001 3 X X 0.18 0.47 2.67 X DORA 41915S001 3 X X 1.28 1.30 2.56 X ESMR 42011M001 4 XXX X 0.66 2.26 3.94 ESQU 41533M001 4 X XX 0.90 2.19 5.05 X ETCG 40602M001 3 X X 0.59 0.28 2.54 X FALK 80602M001 3 XX X 1.88 0.41 3.74 FLOR 41916S001 3 X X 0.20 0.90 1.24 X GOJA 41654M001 3 XX 0.34 0.37 1.35 X GOLD 40405S031 4 X XX 0.40 0.54 3.11 X GRE0 43501S001 3 X X 0.54 1.01 0.81 X GTK0 43602S007 4 X XX 0.48 0.35 3.94 X GUAY 41549M001 3 X X 1.35 0.97 3.62 X GVAL 41623M001 3 XX X 0.66 2.96 3.29 HER2 40522M001 4 X XX 0.57 0.57 1.57 X ICAM 40514M002 4 X XX 0.58 0.54 4.42 X ICEP 40531M001 3 XX 0.66 0.18 2.35 X IDGO 40532M001 3 XX 1.02 0.68 4.84 X IGM1 41505M003 3 X XX 0.51 0.61 2.18 IGN1 41303M001 3 X X 0.12 0.27 0.36 X IMBT 41638M001 3 XX X 0.40 1.82 3.17 IMPZ 41615M001 3 XX X 0.54 0.54 1.42 INEG 40507M001 4 X XX 0.55 0.15 1.71 X IPAZ 40521M002 4 X XX 0.60 0.23 1.54 X IQQE 41708S002 7 XXXXXX 0.52 2.13 3.54 X IQUI 42204M001 4 XXX X 1.45 1.07 5.10 ISCO 40611M001 3 X X 0.14 0.41 1.37 X ISPA 41703M007 6 XX XXX 0.95 1.32 2.92 X JBAL 41537M001 3 X XX 0.91 1.69 2.58 KOUR 97301M210 7 XXXXXX 1.04 0.61 2.88 X LJEC 42010M001 3 XX X 0.14 0.13 2.10 LPGS 41510M001 5 XX XX 0.91 0.40 1.85 X LREC 42014M001 3 X X X 2.21 1.77 4.14 MA01 41542M001 3 X X 1.60 1.46 4.87 X MAEC 42013M001 3 X X 0.34 0.46 2.12 X MANA 41201S001 8 XXXXXXX 1.15 2.04 3.29 X MAPA 41629M001 3 XX X 0.62 0.60 0.97 MARA 42402M001 5 X XXX 0.40 1.19 5.73 X MCLA 41624M001 3 X X X 1.02 3.06 7.82 MDO1 40442M012 4 X XX 1.83 0.28 2.56 X MECO 41526M001 3 X XX 0.56 0.74 4.53 MEDE 41921S001 3 X X 0.13 1.34 5.71 X MERI 40520M001 4 X XX 0.36 0.49 3.53 X MEXI 40519M001 3 XX 0.69 0.46 1.62 X MGBH 41667M001 3 X X 1.54 0.27 3.84 X MGIN 41647M001 3 X X X 0.61 1.64 3.87 MGMC 41624M002 3 X X 0.33 2.01 2.88 X MGRP 41680M001 3 X X 0.87 2.14 0.83 X MGUB 41652M001 3 X X 0.64 0.20 4.48 X MGVA 41626M002 3 X X 1.27 2.08 3.30 X MPL2 41544M001 3 XX X 0.92 0.68 0.78 MSCG 41649M001 3 X X 0.23 0.79 3.85 X MTBA 41663M001 3 X X 0.25 0.28 2.83 X MTCO 41670M001 3 X X 0.40 0.28 3.22 X MTEC 42015M001 3 X X X 1.89 1.72 4.38 MTSF 41655M001 3 XX 0.51 0.35 1.10 X MTY2 40518M001 4 X XX 0.20 0.22 2.16 X MZAC 41503M001 5 XX XX 0.43 1.95 4.19 X MZAE 41530M001 3 X XX 0.34 2.41 10.38 MZSR 41528M002 3 X X 0.49 2.88 6.10 X NAS0 43607S001 4 X XX 0.42 0.44 3.06 X NAUS 41614M002 3 XX X 0.24 0.50 1.29 NEIA 41620M002 3 X X 0.84 1.68 3.02 X NESA 41546M001 3 X X 1.27 1.65 1.21 X OAX2 40517M001 4 X XX 1.06 0.39 1.56 X OHI2 66008M005 5 XX XX 1.98 1.09 1.44 X ONRJ 41635M001 3 XX X 0.57 2.41 0.49 OURI 41631M001 3 X X 0.46 1.55 2.64 X PAAT 41683M001 3 XX 0.32 0.86 2.71 X PALM 66005M002 5 XX XX 2.45 0.61 1.64 X PARC 41716S001 5 XX XX 1.29 0.40 1.74 X PBCG 41656M001 3 X X 0.79 3.77 1.25 X PEPE 41650M001 3 X X 0.28 0.07 2.53 X PERA 41905S001 3 X X 1.75 0.18 5.67 X PIE1 40456M001 4 X XX 0.45 0.54 0.95 X PISR 41673M001 3 XX 0.61 0.60 1.26 X PMB1 43702S001 3 XX 0.27 0.50 1.29 X POAL 41616M001 3 X X 0.33 1.16 1.21 X POLI 41630M001 3 X X 0.51 1.74 4.54 X POPA 41924S001 3 X X 1.12 0.56 1.16 X POVE 41628M001 7 XXXXXX 0.77 0.34 4.65 X PPTE 41611M002 3 X X 0.40 0.35 1.28 X PRGU 41671M001 3 X X 0.51 1.10 2.26 X PRMA 41674M001 3 X X 0.97 0.42 2.71 X PRNA 41554M001 2 X 1.06 0.42 4.45 X PSTO 41925S001 4 XX X 0.59 0.55 1.02 X PTEC 42008M001 3 X X X 1.27 2.59 4.02 QUEM 42020M001 3 X XX 0.30 0.50 2.04 QVEC 42012M001 3 X X 0.36 0.51 2.99 X RIO2 41507M006 5 XX XX 1.57 0.52 2.70 X RIOB 41645M001 3 XX X 0.43 0.43 1.41 RIOD 41608M001 3 X X 1.25 1.50 4.60 X RIOP 42006M001 6 XXX XX 1.03 1.57 3.41 X RJCG 41657M001 3 X X X 0.62 3.00 1.74 RNMO 41664M001 3 XX 0.59 0.76 1.38 X RNNA 41668M001 3 X X 0.23 0.38 3.73 X ROCD 41679M001 3 X X 0.39 0.15 4.20 X ROGM 41651M001 3 X X 0.45 0.46 3.43 X ROJI 41658M001 3 XX X 0.38 0.50 5.12 ROSA 41632M001 3 X X 0.13 1.31 2.72 X RWSN 41513M001 5 XX XX 1.36 1.86 8.45 X SAGA 41639M001 3 XX X 1.09 0.53 2.14 SALU 41640M001 4 X XX 0.59 1.11 5.80 X SAMA 41928S001 3 X X 0.34 0.13 2.29 X SANT 41705M003 7 XX XXX 0.99 2.03 3.53 XX SAVO 41643M001 3 XX X 0.27 0.35 1.41 SCCH 41659M001 3 X X 0.40 1.45 3.83 X SCLA 41660M001 3 X X 0.50 1.11 2.28 X SCRZ 41801M001 3 XX X 0.50 0.27 1.77 SCUB 40701M001 7 XX XXXX 1.63 1.20 4.26 X SJRP 41633M001 3 X X 0.71 1.46 2.04 X SL01 41543M001 3 X XX 0.62 2.04 1.08 SMAR 41621M001 3 X X 0.29 0.57 1.63 X SMRT 43102S001 4 X XX 0.84 0.57 1.40 X SNLR 42021M001 3 X XX 0.60 0.59 2.11 SPAR 41676M001 3 X X 0.72 1.40 3.00 X SPCA 41678M001 3 X X 1.34 2.34 4.59 X SRLP 41532M001 3 X XX 0.49 1.48 3.47 SRNW 43703M001 3 XX X 2.66 2.67 7.97 SRZN 43701S005 3 X X 1.52 1.79 4.05 X SSA1 41644M001 3 X X 0.49 2.79 1.45 X STEC 42016M001 3 X X X 2.08 2.44 4.08 STHL 30606M003 3 X X 1.76 0.61 1.33 X SVIC 41536M001 3 X XX 0.45 1.19 3.50 TAMP 40516M001 4 X XX 0.37 0.66 1.15 X TEG2 41101M001 4 X XX 0.66 0.44 3.73 X TERO 41531M001 3 X X 0.15 1.23 5.15 X TOGU 41661M001 3 X X 0.37 1.62 3.15 X TOL2 40515M001 4 X XX 0.64 0.30 1.33 X TOPL 41648M001 3 XX X 1.57 1.35 7.30 TUCU 41520S001 4 XX XX 0.45 1.27 1.77 UBA1 41627M002 3 X X 0.60 1.40 4.56 X UBER 41625M001 3 XX X 1.32 1.08 10.19 UCOR 41502M001 5 XX XX 0.36 1.10 2.17 X UFPR 41610M002 3 X X 0.57 0.41 3.44 X UGTO 40528M001 3 XX 0.76 0.17 0.61 X UNPA 41550M001 3 XX X 1.62 0.48 5.91 UNRO 41525M001 3 X X 0.31 0.99 2.08 X UNSA 41514M001 8 XXXXXX 0.75 0.68 2.69 XX UNSJ 41527M001 3 X X 1.77 2.90 3.45 X URUS 41802M001 3 XX X 0.29 1.73 1.81 USLP 40530M001 3 XX 0.11 0.15 1.39 X UYDU 42305M001 3 X X 2.53 0.68 2.78 X UYLP 42306M001 4 X XX 0.96 0.99 0.89 X UYMO 42301M001 5 XX XX 0.73 0.83 1.83 X UYPA 42304M001 3 X X 0.77 0.03 4.54 X UYRO 42303M001 3 X X 1.05 0.72 1.29 X UYSO 42307M001 4 X XX 0.64 0.56 1.78 X UYTA 42302M001 3 X X 0.92 0.84 4.65 X VALL 41906S001 3 X X 0.51 0.24 0.90 X VALP 41712S001 3 XX X 0.67 2.85 2.08 VBCA 41512M001 5 XX XX 0.77 0.80 3.54 X VESL 66009M001 4 XX XX 1.90 5.64 1.10 VICO 41613M001 3 X X 0.75 2.15 3.03 X VIL2 40527M001 3 XX 0.68 0.21 1.80 X VIVI 41931S001 3 X X 0.21 0.34 4.56 X YCBA 41803M001 4 XX XX 1.14 0.73 1.92 YOPA 41932S001 3 X X 0.40 0.35 1.04 X ---------------------------------------------------- Total 749 1.00 1.41 3.42 ----------------------------------------------------