Subject: [IGSREPORT-0987] GFZ Analysis Report (week 749)
From: Gerd Gendt and Galina Dick
Date: Thu, 26 May 1994 6:57:14 PDT

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IGS Electronic Report    Thu May 26  6:57:14 PDT 1994      Message Number 0987
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Author: Gerd Gendt and Galina Dick
Subject: GFZ Analysis Report (week 749)

Subject: GFZ Analysis Report (749)

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GFZ ANALYSIS REPORT   GPS-WEEK 0749 (DAYS 135-141, DATES 15-05-94 TO 21-05-94)
******************************************************************************

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) 288 1111
              tel: (0331) 288 1114 

PRODUCT SUMMARY

FILES SENT TO IGN: 
______________________________________________________________________________
gfz07497.sum           this text file
gfz07497.erp           Earth rotation parameters 
gfz0749[0-6].sp3       Daily orbit ephemerides , SP3 format
______________________________________________________________________________

ERP RESULT

GFZ    ERP-RESULTS for WEEK 749       DAYS   135 - 141
__________________________________________________________________________________
  MJD       Xpole    Ypole    UT1R-TAI   Xsig   Ysig  UTsig Nr Nf Nt  LODR  LODsig
             (")      (")     (sec)        (")     (")                 ms/d  ms/d
49487.500  0.18942  0.30319 -28.129313  0.00003 0.00003 0.0 30 20 25  2.3053 0.004
49488.500  0.18882  0.30124 -28.131643  0.00003 0.00003 0.0 30 20 25  2.3267 0.004
49489.500  0.18861  0.29928 -28.133944  0.00004 0.00004 0.0 30 20 25  2.2888 0.004
49490.500  0.18815  0.29716 -28.136254  0.00003 0.00003 0.0 30 20 25  2.2683 0.004
49491.500  0.18812  0.29515 -28.138572  0.00003 0.00003 0.0 29 20 25  2.2641 0.004
49492.500  0.18757  0.29320 -28.140864  0.00003 0.00003 0.0 29 20 25  2.2075 0.004
49493.500  0.18728  0.29138 -28.143180  0.00003 0.00003 0.0 29 20 25  2.2004 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)

Note: E - indicates that the satellite is in eclipse

---------------------------------------------------
                 RMS for DAY
PRN   135   136   137   138   139   140   141
-------------------------------------------------------
 1    36    32    35    32    33    42    31 
 2    34    36    49    33    38    37    46 
 4    19    19    20    15    25    21    27 
 5    21    23    20    18    20    28    22 
 6    44 E  31 E  37 E  24 E  24    36    30 
 7    33 E  58    38    60    55    33    45 
 9    52 E  33 E  52 E  35 E  67 E  70 E  83 E
12     9    11    10    13    24    20    10 
14    14    21    17    19    20    27    31 
15    17    21    21    22    22    34    25 
16    17    20    19    17    16    20    14 
17    37    35    40    28    30    42    33 
18    28    23    21    27    35    29    21 
19    34 E  36 E  34 E  70 E  50 E  63 E  47 E
20    19    24    18    20    29    37    32 
21    28    28    38    21    23    29    28 
22    52    28    36    40    39    44    35 
23    18    13    17    17    11    11    12 
24    21    25    22    21    32    23    26 
25    46 E  62 E  42 E  46 E  45 E  41 E  34 E
26    28    36    41    34    35    32    23 
27    36 E  38 E  36 E  43 E  44 E  36 E  44 E
28    29 E  33    37    20    31    28    23 
29    18    19    21    20    16    23    28 
31    25 E  32    33    36    31    39    29 
 
MEAN  31    32    32    32    34    36    34
---------------------------------------------------

REMARKS: (1) starting this week 
             ocean loading site displacements are used
                
CLOCK ESTIMATION:  ALGO was used as time reference.

STATIONS USED BY GFZ INCLUDING STATISTICS

Sampling rate: 6 minutes         
                                                          
 IGS  INTERNAL         OBSERVATIONS for DAY
 CODE  STA#               135  136  137  138  139  140  141
----------------------------------------------------
onsa  105001   I'92      1593 1611 1629 1595 1596 1601 1616
kosg  110001 F I'92      1690 1684 1695 1695 1640 1671 1643
madr  120001 F I'92      1673 1636 1577 1662 1694 1669 1546
mate  130001 F           1597 1580 1685 1736 1712 1655 1539
trom  150001 F I'92      1564 1557 1610 1604 1616 1587 1699
wetb  160001 F I'92      1694 1710 1720 1722 1656 1642 1518
mets  180001   I'92      1587 1643 1644 1630 1633 1610 1661
usud  200002             1398 1281  565 1461 1541 1659 1571
taiw  220001 F I'92      1717 1705 1637 1697 1715 1703 1615
tidb  305001 F           1608 1646 1628 1646 1539 1545 1615
yar1  310001 F I'92      1695 1704 1654 1623 1727 1694 1661
hob1  320001             1428 1199 1576 1559 1598 1605 1602
algo  400002 F I'92      1581 1566 1564 1180    0    0    0
algo  400003 F I'92         0    0    0    0 1612 1622 1629
stjo  405002 F           1654 1635 1442  832 1631 1637 1677
wes2  408001             1642 1619 1567 1575 1631 1656 1685
gold  410001 F I'92      1598 1487 1603 1589 1632 1638 1569
jplm  415001 F           1731 1269 1684 1751 1710 1713 1743
fair  420001 F I'92      1658 1290 1108 1672 1706 1697 1693
yell  470002 F I'92      1475 1510 1630 1618 1627 1556 1601
drao  475002 F           1708 1666 1709 1713 1708 1722 1736
rcm5  482001   I'92      1683 1666 1678 1647 1694 1692 1710
sant  500001 F I'92      1633  816  546 1692 1268 1235 1329
kour  510001 F           1509 1484 1541 1532 1505 1535 1514
fort  520001             1174 1578 1587 1603 1584 1551 1558
areq  530002             1695 1688 1692 1275    0    0    0
hart  600001 F I'92      1238 1355 1421 1456 1447  883 1083
masp  610001 F I'92      1720 1761 1739 1731 1697 1737 1709
kokb  700001 F I'92      1643 1712  858 1738 1757 1752 1763
pama  710001             1423 1403 1386 1395 1372 1389 1346
mcmu  800002             1769 1738 1741 1711 1330 1283 1640

Note: F    - indicates a constrained fiducial site ( to 1-2 mm )
      I'92 - indicates that initial station coordinates are from ITRF'92

SATELLITES STATISTICS

                OBSERVATIONS for DAY
PRN     135  136  137  138  139  140  141
------------------------------------------
  1    1833 1816 1787 1808 1834 1791 1882
  2    1792 1744 1728 1870 1802 1813 1694
  4    1873 1767 1714 1880 1908 1898 1808
  5    1967 1903 1767 1765 1769 1713 1667
  6    2132 1985 2006 2017 1976 1959 2009
  7    1718 1720 1604 1747 1690 1675 1574
  9    1958 1784 1556 1712 1675 1645 1762
 12    1862 1809 1693 1773 1726 1731 1842
 14    1800 1783 1635 1809 1696 1576 1666
 15    1633 1593 1491 1606 1538 1566 1545
 16    2187 2033 2144 2256 2271 2330 2075
 17    2086 1946 1918 1964 1881 1873 1933
 18    2003 1947 1846 2022 1972 1935 1921
 19    1837 1854 1814 1934 1880 1898 1865
 20    1765 1688 1727 1730 1629 1633 1795
 21    1852 1745 1810 1840 1788 1694 1777
 22    1849 1860 1869 1905 1878 1808 1787
 23    2091 1999 1981 2044 2017 2037 2141
 24    2136 2127 2041 2115 2087 2109 2030
 25    1708 1733 1695 1763 1764 1610 1756
 26    2108 2061 2052 2141 2249 2323 2265
 27    2006 1940 1918 2036 1993 1997 1868
 28    1889 1743 1781 1845 1820 1752 1851
 29    1794 1843 1736 1881 1876 1781 1883
 31    1899 1776 1803 1877 1859 1792 1875
-----------------------------------------

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