Subject: [IGSREPORT-484] GFZ Analysis Report (week 712)
From: G. Dick
Date: 10 SEP 1993 18:32:54

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IGS Electronic Report     10-SEP-1993 18:32:54       Message Number 484
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From: G. Dick
Subj: GFZ Analysis Report (week 712)
------------------------------------

******************************************************************************
GFZ ANALYSIS REPORT   GPS-WEEK 0712 (DAYS 241-247, DATES 29-08-93 TO 04-09-93)
******************************************************************************

Submitted by: G. Gendt, Ch. Reigber, G. Dick, Th. Nischan, W. Mai 
              GeoForschungsZentrum Potsdam (GFZ)
             
              Telegrafenberg A17, D-14473 Potsdam, Germany
              e-mail:[email-masked]
              fax: (0331) 310 648
              tel: (0331) 310 252 

PRODUCT SUMMARY

FILES SENT TO IGN: 
______________________________________________________________________________
gfz07127.sum           this text file
gfz07127.erp           Earth rotation parameters 
gfz0712[0-6].eph       Daily orbit ephemerides , SP1 format
______________________________________________________________________________

ERP RESULT

  MJD        X        Y      UT1-IAT     XSIG    YSIG                   STA SAT 
           arcsec   arcsec     sec      arcsec  arcsec   
49228.500 -0.09967  0.31059 -27.493184  0.00004 0.00004  0.0 0. 0. 0. 0. 28 24
49229.500 -0.09893  0.31301 -27.494880  0.00003 0.00004  0.0 0. 0. 0. 0. 28 24
49230.500 -0.09873  0.31472 -27.496634  0.00004 0.00004  0.0 0. 0. 0. 0. 27 24
49231.500 -0.09898  0.31668 -27.498388  0.00004 0.00004  0.0 0. 0. 0. 0. 27 24
49232.500 -0.09890  0.31809 -27.500142  0.00005 0.00005  0.0 0. 0. 0. 0. 26 24
49233.500 -0.09848  0.32040 -27.501896  0.00004 0.00005  0.0 0. 0. 0. 0. 26 24
49234.500 -0.09809  0.32232 -27.503650  0.00004 0.00004  0.0 0. 0. 0. 0. 27 24
-------------------------------------------------------------------------------

  MJD          LODR    +/-
             (ms/day)

49228.5000    1.7786  0.005
49229.5000    1.7373  0.004
49230.5000    1.8459  0.005
49231.5000    1.9704  0.004
49232.5000    1.9997  0.006
49233.5000    2.0598  0.006
49234.5000    2.0660  0.004
-----------------------------

ORBITS REPEATABILITY (cm):
(mean component error rms =sqrt((xrms**2 + yrms**2 + zrms**2)/3) )

            DAY 1  (32 h)              DAY 2  (32 h)
   |------------------------|--------|                            
 
                            |------------------------|--------|

   Six-hour overlap:        |xxxxxx|

   (only rms < 120 are used for MEAN)

--------------------------------------------------------------------------------
DAY MEAN 1  2  3  7  9 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31
--------------------------------------------------------------------------------
241  38 22 47  7 38 24 31 15 81 25 62 29 31 22 25 50 31 47 35 26 71 25 20 34 28
242  28 14 21 22 36 27 28 22 48 25 28 22 27 21 25 54 13 48 22 18 16 30 19 24 21
243  31 18  - 15 39 18 18 19 64 29 55 33 24 22 20 43 32 36 47 15 21 14 20 23 24
244  31 17 27 24 23 34 30 17 74 26183 26 19 22 30 42 25 38 43 10 28 14 33 22 34
245  46 15 32 42 36 30119 17 55 35211 30 30 31 33 45 29 90 71 13 23  - 22 25 23
246  37 16 41  - 25 15 17 22 47 17 59 30 23 23 31 49 49 89 37 11 21  - 19 38 36
247  34 13 26  - 27 24 25 21 50 14 74 30 25 22 45 37 41 32 45 16 25 21 31  - 48
--------------------------------------------------------------------------------

REMARKS: (1) on day 242 manoeuver of satellite PRN02
         (2) AS for satellites PRN17 and PRN24 on day 246,
                for satellite  PRN17 on day 247
         (3) no data for following satellites (no orbit improvement):
             on day 245 for satellite PRN27 (from 6h day 245 till 3h day 246)
             on day 246 for satellite PRN03 (from 20h day 245 until 2h day 247) 
             on day 247 for satellite PRN29 (starting from 11h day 246)
         (4) bad overlap for satellite PRN12 on day 245 due to the lack of
             observations on days 244, 245
             (no data from 15h day 244 untill 8h day 245)
         (5) modelling problems on day 244 with satellite PRN16
         (6) possible manoeuver of satellite PRN27 on day 245

STATIONS USED BY GFZ INCLUDING STATISTICS

Sampling rate: 6 minutes
                                                          
 IGS  INTERNAL         OBSERVATIONS for DAY
 CODE  STA#       241  242  243  244  245  246  247
----------------------------------------------------
onsa  105001       424 1603 1666 1536 1482 1561 1622
kosg  110001      1631 1520 1580 1553 1464 1501 1551
madr  120001       412 1531 1628 1544 1462 1533 1570
mate  130001      1477 1203 1387 1475 1369 1254 1466
trom  150001      1494 1475  432 1192 1603 1294 1573
wetb  160001      1635 1594 1640 1231 1133 1504 1572
mets  180001      1609 1571 1603 1579 1501 1547 1585
usud  200002      1243 1538 1536 1135    0  340 1484
taiw  220001       330 1012  349 1363 1285 1300 1315
tidb  305001      1631 1603 1619 1583 1488 1496 1533
yar1  310001      1142 1499 1600 1608 1476 1495 1579
hob1  320001      1497 1477 1547 1524 1409 1435 1439
algo  400001      1672 1615 1610 1594 1570 1596 1627
stjo  405001      1561 1565 1550 1560 1471 1518 1364
wes2  408001       427 1603 1213  410 1565 1571 1606
gold  410001      1536 1445 1179 1316 1323 1302 1367
jplm  415001      1485 1448 1467 1440 1377 1381 1383
fair  420001      1396 1370 1363 1376 1358 1391 1375
yell  470001      1593 1615 1586 1558 1526 1512 1551
drao  475001      1546 1509 1517 1493 1444 1455 1449
rcm4  481001      1659 1608 1662 1625 1581 1599 1573
sant  500001      1485 1517 1502 1464  586    0  813
kour  510001      1591 1534 1551 1564 1441 1387 1459
hart  600001      1054 1125 1134 1210 1081 1079 1218
masp  610001      1635 1575 1611 1597 1518 1574 1638
kokb  700001      1344 1311 1230  458  803 1499 1567
pama  710001      1597 1200    0    0    0    0    0
mcmu  800001       507 1701 1612 1601 1195 1379 1564
----------------------------------------------------

SATELLITES STATISTICS

                OBSERVATIONS for DAY
PRN     241  242  243  244  245  246  247
------------------------------------------
  1    1798 2077 1838 1934 1916 1927 2045
  2    1462  634 1323 1538 1443 1553 1666
  3    1429 1667 1542 1513  846  360 1830
  7    1528 1755 1635 1601 1477 1632 1755
  9    1620 1933 1733 1669 1630 1669 1719
 12    1530 1734 1563  655  918 1706 1888
 13    1681 1926 1751 1744 1746 1859 1992
 14    1672 1918 1815 1764 1729 1751 1791
 15    1471 1695 1555 1471 1427 1460 1557
 16    1158 1590 1385 1418 1389 1440 1455
 17    1395 1544 1393 1386 1395 1311 1449
 18    1489 1623 1568 1600 1563 1635 1731
 19    1413 1485 1485 1445 1399 1493 1571
 20    1707 2015 1808 1776 1797 1845 1954
 21    1557 1745 1525 1593 1613 1537 1653
 22    1645 1998 1770 1789 1829 1789 1885
 23    1557 1825 1668 1660 1646 1634 1691
 24    1404 1635 1475 1525 1484 1459 1698
 25    1924 2217 1886 1991 2049 2050 2167
 26    1413 1763 1625 1579 1541 1634 1733
 27    1275 1413 1369 1364  134 1305 1489
 28    1398 1630 1453 1382 1372 1390 1530
 29    1673 1848 1722 1719 1700  586    0
 31    1414 1697 1487 1473 1468 1478 1594
 -----------------------------------------

SOLUTION CHARACTERISTICS

1. Software used :   EPOS.P.V2
2. Definition of Terrestrial Reference Frame
     Fiducial-free adjustment of all station coordinates.
     These  coordinates are then fixed in the determination of ERPs and ORBITS
 
3. Data used:
   - undifferenced carrier phases
   - 32 h arc solutions   

5. Adjusted parameters:
   - state vector of all satellites
   - coordinate corrections 
   - daily ERPs
   - tropospheric zenith path delay (4 h)
   - y-bias, solar radiation scaling factor
   - ambiguities
   - STA and SV clock parameters of each observation epoch