IGS Analysis Center Workshop - IGS - NASA

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I:’. . .: .:;:lb.. . . \t ““..!. ,..k ,.”.1.. .“.“..-.. ... . . . . . . . . :●B.“) . “\. ..” ; ● :/. F&ure 3. Station intervisibility contours for the current IGS network. The solid line isthiXMl km contour.. .69
2.2 Analysis Center System DesignFigure 4 shows the activities of a GAC. Note that there is no direct link to RAC’S orNAC’s; communication of products takes place through the Data Centers.Figure 5 shows the activities of a RAC. Feedback on problems with orbits or referenceframe is sent to the data center, but it may also be sent directly to global analysis centersthrough an IGS electronic mail box. Regional data must be reduced with at least 3 stationsthat are also routinely analyzed in the global network for purposes of network combinationand quality control (allowing a check on the level of agreement between the GAC and RACsolutions of common stations). Only fiducial-free network solutions are submitted to thedata centers, with the exception of an annual regional reference frame submission which issent for assessment (by NAC’s) and for comparison with the ultimately adopted standardframe..Data CentersData ~ Orbits and EOP ~Global Analysis CentersSubmit Constrain to Partition sl# nitWe;kly standard frame ~oordinatesWeeklyMCombine into kinematic solution;apply minimal constraints SubmitAnnual Global Analysis Center*,JFigure 4. Global Analysis Center Flowchart70
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●INTERNATIONAL ASSOCIATION OF GEO
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TABLE OF CONTENTS.FINAL AGENDA . .
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13:30 NGS14:00 S1014:30 EMR15:00 CO
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LIST OF PARTICIPANTS:Prof. Gerhard
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Table 1. Current IGS Analysis Cente
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The first field identifies the reco
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Summary InformationThe third produc
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From Figure 1 we find that there ar
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to define a reference clock in thei
Page 22 and 23: SESSION 2(IGS orbit products)
Page 24 and 25: 1. introductionThe main objectives
Page 26 and 27: ecause of the above averaging. This
Page 28 and 29: RMS per center (m)o 0 0 0 0 0 oA0Iv
Page 30: Scale (ppb)I I I I I 11+-b~ul0Amo&I
Page 33 and 34: and NGS. Note that the day to day v
Page 35 and 36: Rotation around X-axis (mas)1&0 0o
Page 37 and 38: discussed in Section 3 are here see
Page 39 and 40: -----------------------------------
Page 41 and 42: Residuals in Meters1 1 1 1 1 1 1=%m
Page 43 and 44: Residuals inMeters11111cnficJJw-o A
Page 45 and 46: I I I—Residuals in Meters..—.
Page 47 and 48: 1111ResidualsMeters,—{44
Page 49 and 50: Residuals in MetersI I I II I I IIc
Page 51 and 52: Rms in MetersI 1 ! I 1 10 n0 a0n.ff
Page 53 and 54: IGS- and the COM-sets, but that the
Page 55 and 56: Table 4.1 N.A. Baseline Repeatabili
Page 57 and 58: ..Figure 5.1:Clock solutions for FA
Page 59 and 60: specifically the preanalysis can be
Page 61 and 62: discussion, a question as to whethe
Page 63 and 64: SUMMARY OF SESSION 3This Session be
Page 65 and 66: IGS POSITION PAPER, IGS ANALYSIS CE
Page 67 and 68: and Earth orientation parameters (E
Page 69 and 70: LbPIERS and IGSCentral Bureausand D
Page 71: @ IGS will develop instructions, an
Page 76 and 77: applied to the solution in order to
Page 78 and 79: ..standard deviations. This is conv
Page 80 and 81: known, the two solutions will be ad
Page 82 and 83: errors, and can therefore be used a
Page 84 and 85: International Terrestrial Reference
Page 86 and 87: Thus, there is the potential of fee
Page 88 and 89: 90” 100” 110” 120” 130” 1
Page 91 and 92: adiation parameters for each satell
Page 93 and 94: Bock, Y., R.I. Abbot, C.C. Counselm
Page 95 and 96: SUMMARY OF SESSION 4This session st
Page 97 and 98: INTERNATIONAL EARTH ROTATION SERVIC
Page 99 and 100: x- differences with IERS0.001”I I
Page 101 and 102: SUMMARY OF SESSION 5In the last ses
Page 103 and 104: 1) I(X3 PROCESSING/REPORTS/FORMATSS
Page 105 and 106: IGS should foster and encourage reg
Page 107 and 108: ..INTERNATIONAL GPS SERVICE FORGEOD
Page 109 and 110: ortL.s.4
Page 111 and 112: 1234567a91011121314IsIt17ItIs2C2122
Page 113 and 114: . Ruth Neilan16S Central BureauJet
Page 115 and 116: ON1T.>● Jim ZumbergeJet Propulsio
Page 117: PROPOSED ORGANIZATION OF THE INTERN
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IGS Analysis Center Workshop - IGS - NASA

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