Subject: [IGSREPORT-0929] ESA07457.SUM
From: ESOC IGS-team
Date: Fri, 29 Apr 1994 6:52:05 PDT

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IGS Electronic Report    Fri Apr 29  6:52:05 PDT 1994      Message Number 0929
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Author: ESOC IGS-team
Subject: ESA07457.SUM

Subject: ESA07457.SUM

 -------------------------
 ANALYSIS CENTRE: ESA/ESOC
 -------------------------

 OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS
 AT THE ESOC PROCESSING CENTRE FOR IGS

 J.M.Dow, T.Martin-Mur, J.Feltens, C.Garcia-Martinez, M.A. Bayona-Perez

 Description of analysis for period 1994 Apr 17 - Apr 23
                                                        (week 0745)
 1. SOFTWARE USED:   GPSOBS/BAHN-Version 5

 2. MODELS USED AND PARAMETERS ESTIMATED/FIXED:

  For a description of models and parameters used ==> see IGS - Mail  51
  For updates of the models and parameters used   ==> see IGS - Mail 114 and
                                                      see IGS - Rep. 224,277
 3. REMARKS:

    -Lack of observations for satellite PRN13 on DOY 113.

    -Manoeuvre of satellite PRN09 on 20/04/94. The satellite was
     only tracked by HART when the manoeuvre took place (between
     1300 and 1430 UTC) and the time could not be estimated with
     the usual accuracy. The estimated components are the following:

         Radial     :   38 mm/s
         Transverse :  154 mm/s
         Normal     :  -10 mm/s

     Due to the fact that the satellite was sparsely tracked during
     and after the manoeuvre, the estimation is not as accurate as
     usual.

    -Satellite clock bias estimates for the last weeks have been
     severely affected by C/A pseudo range biases. We are using the
     biases published by J.Kouba in the recent IGS workshop, but it
     seems that these biases are not constant for all the receivers.
     For the last weeks we have had problems with the following
     receivers:
      rcv:  KOKB  doy: 096  different biases for different satellites
      rcv:  TIDB  doy: 098  unusually high noise
      rcv:  HART  doy: 098  different biases for different satellites
     We are actually reprocessing the last three weeks excluding
     troublesome receivers and we will redeliver them as soon as they
     are completed. For this week we have excluded the three previously
     listed receivers and we think that the clocks can be, when
     compared with EMR clocks, in the order of 10 ns rms.

 4. GROUND STATIONS: Altamimi and Boucher, IGS Mails 421 and 430,
                     ITRF92 at 1994.0 and localtie.tab.
 _______________________________________________________________________
 GPSweek|ALGO  GOLD  KIRU  KOUR  MCMU  RCM5  TIDB  USUD  YELL  |f |e |t
 0745___| AREQ  HART  KOKB  MADR  PAMA  SANT  TROM  WETT       |i |s |o
    |DAY|  FAIR  HOB1  KOSG  MASP  PERT  TAIW  TSKB  YAR1      |x.|t.|t.
 ---|---|------------------------------------------------------|--|--|--
    |107| FeF   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|12|25
    |108| FeF   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|12|25
    |109| FeF   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|12|25
    |110| F-F   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|11|24
    |111| F-F   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|11|24
    |112| F-F   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|11|24
    |113| FeF   FFe   eFF   eFe   eee   eFe   FFe   eFF   F    |13|12|25

    with: "F" ... coordinates of ground station kept fixed,
          "e" ... coordinates of ground station estimated,
          "-" ... ground station not included on that day.

 5. ORBIT FIT MINUS EXTRAPOLATION FROM PREVIOUS DAY, RMS IN <CENTIMETER>

  \DAY|  107   108   109   110   111   112   113
   \  |
    \ |
  SAT\|
  ----|-------------------------------------------
   02 |   76    40    65    42   100   167    57
   12 |   28    45    37    50    84    29    20
   13 |   75    47    32    55    53    24    --
   14 |   42    44    55    26    46    62    67
   15 |   40    27    47    43    60    48    47
   16 |   41    42    96   101    55    88    50
   17 |   86    31    34    87    51    56    44
   18 |   76    50    53    81    89    49    59
   19 |   67    47    65    53    59    61    50
   20 |   56    29    71    50    35    36    32
   21 |   75    62    55    45    51    35    39
   22 |   31    58   127    55    29    43    72
   23 |  102    21    15    31    22    44    26
   24 |   56    38    48    49    79    51    38
   25 |   48    51    25    65    39    39    70
   26 |  137   105   115   128    93   136    92
   27 |   64    51    36    49    29    45    42
   28 |   64    94    62   114    68    83    55
   01 |   79    35    67    80    64    70    55
   29 |   64   105   159   120    45    42    47
   31 |  107   109    73   105    70   129    92
   07 |  120    98    86   134    52    88    94
   09 |   45    59    58    --  3499    60    49
   05 |   49    30    42    35    48    83    29
   04 |   65    68    73    47    78    41    96
   06 |   --    --    --    70   212   192   425

 6. GROUND STATIONS STATISTICS, RESIDUALS RMS OF DOUBLE DIFFERENCE PHASES
    IN <MILLIMETER>, nmeas = NUMBER OF MEASUREMENTS

   \DAY|     107       108       109       110       111       112       113
    \  |
     \ |
  STAT\| nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS
  -----|-----------------------------------------------------------------------
  ALGO |  2367/ 11  2640/ 11  2814/ 11  3236/ 12  3432/ 12  3344/ 11  2988/ 12
  AREQ |  1596/ 11  1223/ 10   469/ 10     0/  0     0/  0     0/  0  1381/ 11
  FAIR |   641/ 12   805/ 10  1123/ 11  1375/ 13  1536/ 12  1663/ 11  1438/ 12
  GOLD |  1269/ 12  1311/ 11  1289/ 11  1359/ 12  1435/ 12  1423/ 11  1456/ 12
  HART |   555/ 18   499/ 14   549/ 12   557/ 19   615/ 19   685/ 11   596/ 12
  HOB1 |  2368/ 13  2593/ 11  2590/ 11  2161/ 13  1718/ 15  1453/ 11  1346/ 13
  KIRU |   718/ 16   810/ 13   888/ 12  1001/ 13  1125/ 14  1112/ 14  1112/ 14
  KOKB |  1729/ 14  1888/ 13  1982/ 12  2042/ 14  2153/ 14  2131/ 12  2001/ 13
  KOSG |  1409/  9  1372/  9  1377/  9  1481/  9  1570/ 10  1694/  9  1660/ 10
  KOUR |  1165/ 16  1123/ 13  1102/ 13  1334/ 16  1386/ 17  1303/ 14  1267/ 15
  MADR |  2842/ 12  3349/ 10  3257/  9  2764/ 10  3205/ 11  4266/ 11  3492/ 11
  MASP |  2054/ 13  1827/ 11  1911/ 10  2147/ 11  2037/ 13  1801/ 11  1896/ 11
  MCMU |  1032/ 11  1058/ 10  1311/ 11  1234/ 13  1136/ 16  1122/ 11  1115/ 11
  PAMA |   114/ 19   135/ 17   102/ 15    91/ 23    91/ 25    86/ 17    85/ 17
  PERT |  1354/ 12   995/ 10  1112/ 11   619/ 15   689/ 13  1330/ 10  1429/ 12
  RCM5 |  1057/ 11  1111/ 11  1114/ 11  1158/ 13  1264/ 12  1170/ 12  1053/ 12
  SANT |  1472/ 10  1557/ 11  1067/ 12   790/ 16   810/ 20   834/ 14  1529/ 12
  TAIW |  1724/ 24  1863/ 12  1942/ 12  2152/ 12  2150/ 13  2197/ 12  1931/ 12
  TIDB |  1673/ 12  2421/ 11  2098/ 10   975/ 10   105/  7     0/  0     0/  0
  TROM |   746/ 13   772/ 10   878/ 10  1019/ 10  1142/ 10  1118/ 10  1083/ 10
  TSKB |  1919/ 10  1923/  9  1978/  8  2008/  8  2002/  9  2112/  9  2060/  9
  USUD |  3667/ 18  3764/ 10  3797/ 10  3861/ 11  3932/ 11  4253/ 10  4152/ 10
  WETT |  1319/ 11  1174/  9  1171/  9  1258/  9  1274/ 10  1376/ 10  1155/ 10
  YAR1 |  1774/ 12  1701/ 11  1513/ 12  1317/ 15  1675/ 15  1944/ 11  1846/ 12
  YELL |  1128/ 11  1126/ 11  1104/ 10  1331/ 11  1478/ 10  1729/  9  1509/ 10

 7. SATELLITES STATISTICS, RESIDUALS RMS OF DOUBLE DIFFERENCE PHASES
    IN <MILLIMETER>, nmeas = NUMBER OF MEASUREMENTS

   \DAY|     107       108       109       110       111       112       113
    \  |
     \ |
   SAT\| nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS
  -----|-----------------------------------------------------------------------
  PRN02|  1539/ 13  1639/ 11  1625/ 11  1590/ 12  1513/ 13  1648/ 11  1583/ 11
  PRN12|  1745/  9  1680/  9  1552/  9  1616/ 14  1652/ 14  1731/ 10  1817/ 10
  PRN13|  1628/ 11  1677/ 11  1343/ 10  1093/ 11  1050/ 11   702/ 10    71/ 10
  PRN14|  1301/ 11  1536/ 11  1424/ 10  1375/ 11  1436/ 11  1573/ 10  1576/ 11
  PRN15|  1505/ 11  1791/ 11  1676/ 10  1635/ 11  1757/ 11  1691/ 10  1624/ 12
  PRN16|  1304/ 11  1319/ 10  1337/ 11  1463/ 12  1597/ 11  1604/ 11  1554/ 11
  PRN17|  1458/ 14  1584/ 10  1629/ 10  1526/ 11  1452/ 11  1604/ 11  1705/ 11
  PRN18|  1864/ 14  1799/ 12  1537/ 10  1431/ 11  1666/ 12  1930/ 11  1821/ 11
  PRN19|  1894/ 11  1940/ 11  1714/ 10  1608/ 11  1632/ 11  1712/ 11  1743/ 11
  PRN20|  1600/ 10  1474/ 10  1530/ 10  1547/ 11  1486/ 11  1582/ 11  1716/ 12
  PRN21|  1340/ 10  1575/ 10  1501/ 10  1452/ 11  1487/ 11  1463/ 10  1347/ 11
  PRN22|  1555/ 12  1720/ 11  1613/ 11  1579/ 11  1610/ 12  1693/ 11  1672/ 11
  PRN23|  1383/ 10  1526/ 10  1443/ 10  1398/ 11  1350/ 10  1389/ 10  1315/ 10
  PRN24|  1436/ 25  1469/ 10  1423/ 10  1331/ 12  1339/ 12  1593/ 11  1526/ 11
  PRN25|  1284/ 11  1276/ 11  1316/ 11  1344/ 11  1342/ 12  1451/ 11  1403/ 12
  PRN26|  1291/ 13  1319/ 11  1352/ 11  1382/ 11  1353/ 13  1414/ 11  1419/ 12
  PRN27|  1533/ 11  1559/ 11  1511/ 10  1461/ 10  1460/ 11  1419/ 10  1314/ 10
  PRN28|  1593/ 12  1726/ 12  1632/ 12  1611/ 13  1580/ 15  1677/ 12  1675/ 13
  PRN01|  1284/ 12  1387/ 11  1338/ 12  1379/ 12  1434/ 12  1429/ 11  1402/ 12
  PRN29|  1300/ 16  1434/ 13  1241/ 11  1223/ 13  1298/ 14  1388/ 12  1455/ 12
  PRN31|  1252/ 15  1299/ 12  1224/ 13  1241/ 14  1279/ 16  1278/ 12  1348/ 13
  PRN07|  1681/ 15  1716/ 12  1624/ 13  1661/ 14  1634/ 15  1689/ 11  1624/ 13
  PRN09|  1747/ 11  1796/ 10  1604/ 10   936/ 19  1177/ 20  1902/ 10  2018/ 10
  PRN05|  1600/ 10  1540/  9  1509/ 11  1525/ 12  1608/ 12  1683/ 11  1761/ 11
  PRN04|  1325/ 12  1259/ 10  1264/ 10  1320/ 11  1267/ 11  1346/ 10  1333/ 11
  PRN06|   250/ 60     0/  0  1576/ 11  1543/ 14  1501/ 15  1555/ 14  1758/ 14

 8. PRODUCTS GENERATED:

  The following products are generated and stored in CDDIS at NASA/GSFC:

  ESA0745*.EPH - Precise GPS orbits and clocks, * = day of the week (0-6)
  ESA07457.ERP - Earth rotation results for week 0745 (including DUT1R)
  ESA07457.SUM - This summary file

 End of Message