The International DORIS Service July 2003 – December 2005 report

IDS Report – July 2003 to December 2005 3
1 INTRODUCTION.............................................................................................................. 5
2 HISTORY ......................................................................................................................... 6
3 ORGANIZATION.............................................................................................................. 8
3.1 GOVERNING BOARD..................................................................................................... 8
3.2 CENTRAL BUREAU........................................................................................................ 9
4 THE CENTRAL BUREAU: IDS INFORMATION SYSTEM ............................................. 10
4.1 WHAT AND WHERE ..................................................................................................... 10
4.2 WEB AND FTP SITES................................................................................................... 11
4.2.1 IDS WEB SITE................................................................................................................11
4.2.2 IDS FTP SERVER “BASIC INFO”.................................................................................12
4.2.3 DORIS WEB SITE ..........................................................................................................12
4.2.4 ANALYSIS COORDINATION WEB SITE ......................................................................12
4.2.5 DATA CENTERS’ WEB SITES ......................................................................................12
4.3 THE MAIL SYSTEM ...................................................................................................... 13
4.3.1 DORISMAIL ....................................................................................................................13
4.3.2 DORISREPORT .............................................................................................................14
4.3.3 IDS ANALYSIS FORUM.................................................................................................14
4.4 HELP TO THE USERS.................................................................................................. 15
4.5 FUTURE PLAN ............................................................................................................. 15
5 THE NETWORK............................................................................................................. 16
5.1 GENERAL STATUS OF THE NETWORK ..................................................................... 16
5.2 RENOVATION PROGRAM OF THE PERMANENT NETWORK ................................... 16
5.3 THIRD GENERATION BEACONS DEPLOYMENT STATUS......................................... 18
5.4 IDS EXPERIMENTS...................................................................................................... 19
5.5 CO-LOCATIONS WITH OTHER IERS TECHNIQUES................................................... 19
6 THE SATELLITES FITTED OUT WITH DORIS RECEIVERS ........................................ 21
7 IDS DATA FLOW COORDINATION............................................................................... 23
7.1 FLOW OF IDS DATA AND PRODUCTS ....................................................................... 23
7.2 DORIS DATA ................................................................................................................ 25
7.3 DORIS PRODUCTS ...................................................................................................... 26
7.4 FUTURE PLANS ........................................................................................................... 27
7.5 IDS DATA CENTERS.................................................................................................... 27
7.5.1 CRUSTAL DYNAMICS DATA INFORMATION SYSTEM (CDDIS)...............................27
7.5.2 INSTITUT GEOGRAPHIQUE NATIONAL (IGN), PARIS FRANCE...............................28
8 ANALYSIS COORDINATION ......................................................................................... 29
8.1 INTRODUCTION........................................................................................................... 29
8.2 IDS DATA AND PRODUCTS......................................................................................... 30
8.2.1 DATA ..............................................................................................................................30
8.2.2 PRODUCTS....................................................................................................................31
8.3 ANALYSIS TOOLS........................................................................................................ 34
8.3.1 CATREF DATA MODELLING AND ANALYSIS.............................................................34
8.3.2 EXTRACTING SEASONAL AND LOW FREQUENCY COMPONENTS: THE
CRONO_VUE ALGORITHM ..........................................................................................34
8.3.3 ALLAN VARIANCE.........................................................................................................34
8.4 THE 2002 ANALYSIS CAMPAIGN ................................................................................ 35
8.5 THE 2003 ANALYSIS CAMPAIGN ................................................................................ 36
8.5.1 SENSITIVITY OF ORBITAL REFERENCE PLANE TO GRAVITY FIELD ....................37
8.5.2 SCALE OF THE DORIS TERRESTRIAL REFERENCE FRAMES ...............................37
8.5.3 SENSITIVITY OF TERRESTRIAL REFERENCE FRAMES TO GRAVITY
FIELD AND TO ANALYSIS CENTER ............................................................................39
8.6 DORIS OBSERVED GEOCENTER MOTIONS.............................................................. 40
8.6.1 SEASONAL SIGNAL ......................................................................................................41
8.6.2 SPECTRUM....................................................................................................................42
8.7 ANALYSES OF STATION STABILITY........................................................................... 43
8.8 IDS CONTRIBUTIONS TO ITRF 2005 .......................................................................... 44