Combination at the Observation Level - IERS
Combination at the Observation Level - IERS
Combination at the Observation Level - IERS
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First actions of <strong>the</strong> COL-WGTo intercompare results of different software packagesDefining benchmarks: <strong>the</strong> period chosen for establishing benchmarks is fromAugust 10 to August 30, 2008. It includes <strong>the</strong> intensive CONT08 VLBIperiod (from 12 to 26/08/08). Combined SINEX will be delivered per week.They could be separ<strong>at</strong>ed per technique.Estim<strong>at</strong>ing parameters: <strong>the</strong> non reduced parameter set should include EOP (pole,UT1, nut<strong>at</strong>ion parameters per day and possibly drifts), st<strong>at</strong>ion coordin<strong>at</strong>es (perweek), troposphere zenith delay ZTD (per hour). In order to reduce <strong>the</strong> size ofSINEX files, troposphere parameters of non colloc<strong>at</strong>ed GPS st<strong>at</strong>ions can bepreviously reduced.Schedule:2009: cre<strong>at</strong>ion of <strong>the</strong> COL forum and discussion on a priori models and parametersFebruary 2010: first delivery of SINEXJune 2010: second delivery of SINEXEnd 2010: need for result discussion and reiter<strong>at</strong>ion
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