------------------------------------------------------------------------------- EUREF LOCAL ANALYSIS CENTRE ------------------------------------------------------------------------------- Agency acronym : BKG Institution : Bundesamt fuer Kartographie und Geodaesie Mail Address : Richard Strauss Allee 11 : D-60598 Frankfurt am Main : Phone: +49 69 6333-1, Fax: +49 69 6333-425 Primary Contact Contact Name : Dr. Georg Weber Telephone : +49 69 6333-391 Fax : +49 69 6333-425 E-Mail : georg.weber@bkg.bund.de Secondary Contact Contact Name : Peter Franke Telephone : +49 69 6333-279 Fax : +49 69 6333-425 E-Mail : peter.franke@bkg.bund.de Third Contact Contact Name : Telephone : Fax : E-Mail : Software Used : Bernese GPS Software Version 4.x upto GPSWEEK 1318 : Bernese GPS Software Version 5.0 since GPSWEEK 1319 : since week 1610: GLONASS included, ambiguity fixing : for GPS only, CODE orbits and ERPs : used : Bernese GPS Software Version 5.2 since GPSWEEK 1730 Stat. Included in Analysis : 4CHAR start- stop ALME (EPN) 1098 - now ANKR (IGS) 0830 - now ARGI (EPN) 1625 - now AUT1 (EPN) 1321 - now AXPV (EPN) 1555 - now BADH (EPN) 1374 - now BELF (EPN) 1406 - now BORJ (EPN) 1343 - now BPDL (EPN) 1481 - now BRST (IGS) 0989 - now BRUX (EPN) 1674 - now BUCU (IGS) 1008 - now BUDP (EPN) 1202 - now BUTE (EPN) 1295 - now CEBR (EPN) 1579 - now CEU1 (EPN) 1465 - now CFRM (EPN) 1576 - now COST (EPN) 1362 - now DRES (EPN) 1034 - now DUB2 (EPN) 1668 - now DUTH (EPN) 1497 - now DYNG (EPN) 1687 - now ENIS (EPN) 1513 - now ENTZ (EPN) 1330 - now EUSK (EPN) 0976 - now EVPA (EPN) 1349 - now FLRS (EPN) 1492 - now FUNC (EPN) 1479 - now GLSV (IGS) 0961 - now GRAZ (IGS) 0830 - now GWWL (EPN) 1473 - now HELG (EPN) 1039 - now HERS (IGS) 0831 - now HERT (IGS) 1232 - now HOBU (EUR) 1066 - now HOE2 (EPN) 1335 - now HOFN (IGS) 0921 - now IGEO (IGS) 1434 - now INVR (EPN) 1522 - now ISTA (EPN) 1047 - now KARL (IGS) 0976 - now KIRU (IGS) 0894 - now KLOP (EPN) 1034 - now KOSG (IGS) 0830 - now KTVL (EPN) 1589 - now KURE (EPN) 1473 - now LAMP (EPN) 1014 - now LEON (EPN) 1442 - now MALL (EPN) 1098 - now MATE (IGS) 0830 - now MDVJ (IGS) 1409 - now MELI (IGS) 1690 - now METS (IGS) 0830 - now MOPS (EPN) 1422 - now MORP (IGS) 1191 - now MSEL (EPN) 1292 - now NEWL (EPN) 1277 - now NICO (IGS) 0921 - now OBE4 (EUR) 1715 - now ONSA (IGS) 0830 - now ORID (IGS) 1088 - now OSJE (IGS) 1084 - now PFA2 (EPN) 1500 - now PLND (EPN) 1652 - now POTS (IGS) 0830 - now POUS (EPN) 1345 - now PTBB (EUR) 1060 - now RABT (IGS) 1103 - now REYK (IGS) 0830 - now SASS (IGS) 1235 - now SBG2 (EPN) 1500 - now SCOA (EPN) 1556 - now SMID (EPN) 1225 - now SOFI (IGS) 0921 - now STAS (EPN) 1092 - now SUR4 (EPN) 1655 - now TERC (EPN) 1526 - now TRDS (EPN) 1092 - now TRF2 (EPN) 1500 - now TUBI (IGS) 1027 - now UNTR (EPN) 1415 - now USAL (EPN) 1588 - now USDL (EPN) 1473 - now VEN1 (EPN) 1555 - now VFCH (EPN) 1330 - now VIL0 (EPN) 0933 - now WARN (IGS) 1242 - now WROC (IGS) 0894 - now WSRT (IGS) 1481 - now WTZR (IGS) 0884 - now YEBE (IGS) 1085 - now ZADA (EPN) 1655 - now ZECK (IGS) 0927 - now ZWE2 (IGS) 1297 - now former IGS/ EPN Stations: BORK (EPN) 1089 - 1430 BRUS (IGS) 0830 - 1675 DUBR (IGS) 1084 - 1711 HFL2 (EPN) 1500 - 1654 HOER (EPN) 1243 - 1334 MADR (IGS) 0830 - 0938 MAD2 (IGS) 0939 - 1087 NPLD (IGS) 1102 - 1465 OBER (IGS) 0830 - 1126 OBE2 (IGS) 1127 - 1457 OBE3 (IGS) 1466 - 1703 PFAN (EPN) 1030 - 1500 PLYM (EPN) 1225 - 1244 SBGZ (EPN) 0990 - 1500 SNEC (EPN) 1321 - 1535 SUUR (EPN) 1395 - 1655 TRAB (IGS) 1047 - 1435 TRFB (EPN) 1349 - 1500 TRON (EPN) 0940 - 1050 WETT (IGS) 0830 - 0883 ZWEN (IGS) 0830 - 1297 EUREF solutions generated : BKGwwww7.SNX, weekly SINEX file and for GPS week 'wwww' : BKGwwwwn.SNX, daily SINEX file BKGwwww7.SUM, processing summary file BKGwwwwn.TRO, Daily troposphere results in tropospheric SINEX format, for weekdays "n" (0-6) : BKGwwwwnR.SNX, daily SINEX file (Rapid Orbit) EUREF solutions sent to : BKG Report generated : 05/15/1996 Report updated : 12/06/2006 08/12/2006 01/12/2009 06/12/2010 25/06/2012 20/02/2013 25/04/2013 ----------------------------------------------------------------------------- MEASUREMENT MODELS ----------------------------------------------------------------------------- Preprocessing : Phase preprocessing in a baseline by baseline mode using triple-differences. In most cases cycle slips are fixed looking simultaneously at different linear combinations of L1 and L2. If a cycle slip cannot be fixed reliably, bad data points are removed or new ambiguities are set up. Basic observable : GPS carrier phase. Code measurements are only used for receiver clock synchronization. The elevation cut-off angle used for the official solution is 10 degrees. The data sampling rate is 30 and 180 seconds, respectively. Since GPS week 782 : 15 degrees Since GPS week 1130 : 10 degrees + elevation dependent weighting Since GPS week 1372 : Usage of Radome Codes Since GPS week 1610 : GPS+GLONASS observations are used Modelled : Double-differences, ionosphere-free linear combination. observable Ground antenna : up to week 1400: Elevation-dependent phase center corrections are phase center applied to model the differences between different calibrations antenna types. The IGS_01 model used. The corrections are given relative to the AOAD/M_T antenna. since week 1400: Absolute antenna phase center corrections based on IGS05 model (exceptions for stations with indiv. absol. calibrations listed in epnc_05.atx) considering antenna radome codes. If antenna/radome pair has no available calibrations, the corresponding values for the radome code "NONE" are used. Satellite antenna: since week 1400: Absolute antenna phase centre corrections phase center based on IGS05 model. calibrations Troposphere : upto week 1133: Saastamoinen a priori model used, estimating zenith delays in 2 hour intervals for each station mapping function: 1/cos(zenith angle). since week 1133: no a priori model used, estimating zenith delays in 1 hour intervals for each station, mapping function: Dry Niell. since week 1319: Saastamoinen-based dry component mapped with the dry-Niell mapping function is used as a priori model. To map the wet component, the wet-Niell mapping function is used. since week 1400: Dry-Niell as a priori model, estimation of zenith delay corrections at 1-hour intervals for each station, using the wet-Niell MF, no a priori sigmas. Horizontal gradient parameter estimated /day/station (TILTING), no a priori constraints. since week 1730: GMF as a priori model, estimation of zenith delay corrections Compute daily TRO files with fixed cummul. coordinates input from weekly solution. Ionosphere : CODE global iono models are considered. These models help to increase the number of resolved ambiguities in the QIF (and L5/L3) ambiguity resolution. Ionosphere : Regional ionospheric model calculated. Only used for QIF ambiguity resolution. Not modelled in final solution (ionosphere eliminated by forming the ionosphere-free linear combination of L1 and L2) Ocean Loading : Using Ocean-Loading-Model computed by H.G.Scherneck Onsala Space Observatory Since GPS week 1372 : FES2004 model ----------------------------------------------------------------------------- ESTIMATED PARAMETERS (APRIORI VALUES & SIGMAS) ----------------------------------------------------------------------------- Adjustment : Weighted least-squares algorytmics. Rejection : upto week 1318: No rejection during parameter estimation criteria procedure. Outliers are marked during pre-processing step. : since week 1319: Daily RINEX observation files containing less than 10 percent of possible observation are ignored. The threshold value concerning data screening is 2.5 mm, specifically for a normalized, or L1 zero-difference zenith residual. Baseline data exceeding the over- all sigma level of 5 millimeters is excluded as whole. Datum definition : A 3-translation condition with respect to realization of is imposed. The list of station defining the datum currently includes the following IGS core stations: BRUS,GRAZ,KOSG,MATE,ONSA,POTS,REYK,WTZR since week 1400: BRUS,MATE,ONSA,POTS,REYK,WTZR,ZIMM since week 1440: BRUS,GLSV,HOFN,MATE,METS,NICO,ONSA,POTS, RABT,WTZR since week 1632: ANKR BRST BUCU DUBR GLSV GRAZ HERT HOFN ISTA KOSG MDVJ MATE METS MORP NICO ONSA POTS RABT SOFI WSRT WTZR YEBE ZECK ZIMM used for minimal constraints to IGS05 (up to GPSWEEK 1631) used for minimal constraints to IGS08 (since GPSWEEK 1632) Troposphere : Zenith delays estimated once per 1 hour for each station. Corrections to a priori model constrained to 5 m (abs) and 5.0 m (rel). Since GPS week 1108 : Estimate trop. parameter. in 1 hour intervals, save in daily normal equations and create from these the weekly solution. Ionospheric : Regional ionospheric model for QIF ambiguity resolution. Ambiguities : Ambiguity resolution is performed by using the quasi- ionosphere-free (QIF) strategy in conjunction with regional TEC information. Estimated as real values with no a priori constraints Satellite clock : Satellite clock biases are not estimated but eliminated bias by forming double-differences. Receiver clock : Receiver clock corrections are estimated as part of the biases preprocessing using code measurements. They are finally eliminated by forming double differences. Orbits and ERPs : IGS final orbit and ERP information is adopted. since week 1319 : -> Used : DE405 planetary ephemeris, ocean loading -> The Earth geopotential is modeled using JGM3. CODE final orbit and ERP information is adopted. since week 1610 : -----------------------------------------------------------------------------