Subject: [IGSREPORT-0715] GFZ Analysis Report (week 730)
From: Gerd Gendt and Galina Dick
Date: Wed, 19 Jan 1994 1:27:59 PST

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IGS Electronic Report    Wed Jan 19  1:27:59 PST 1994      Message Number 0715
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Author: Gerd Gendt and Galina Dick
Subject: GFZ Analysis Report (week 730)

Subject: GFZ Analysis Report (730)

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GFZ ANALYSIS REPORT   GPS-WEEK 0730 (DAYS 002-008, DATES 02-01-94 TO 08-01-94)
******************************************************************************

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 

REMARKS for WEEK 730:

(1) Starting with week 730 our solutions are in ITRF92 as defined by
    coordinates in IGSMAIL#421 and #430. 
    From the change in the coordinates we got a shift in the EOP of:
      x-pole  -0.00040
      y-pole   0.00062                    (Mean of 28-day interval)

(2) Starting with week 730 we have changed 
    GM  from  398600.440  to  398600.4418

PRODUCT SUMMARY

FILES SENT TO IGN: 
______________________________________________________________________________
gfz07307.sum           this text file
gfz07307.erp           Earth rotation parameters 
gfz0730[0-6].sp3       Daily orbit ephemerides , SP3 format
______________________________________________________________________________

ERP RESULT

Attention: UT is given for midnight
           UT differences plus dLODR(ms) gives the adjusted LODR

  MJD        XP       YP   UT1-IAT for 0h SIGX   SIGY  SIGLOD NS FIX NV  dLODR 
           arcsec   arcsec     sec      arcsec  arcsec   ms                ms
49354.500  0.01478  0.47773 -27.805600  0.00003 0.00003 0.004 28 20 26  0.0878
49355.500  0.01719  0.47828 -27.807780  0.00003 0.00003 0.004 28 20 26  0.0386
49356.500  0.01982  0.47864 -27.809960  0.00003 0.00003 0.004 28 20 26  0.0133
49357.500  0.02254  0.47982 -27.812140  0.00003 0.00003 0.004 28 20 26 -0.0004
49358.500  0.02595  0.47998 -27.814320  0.00003 0.00003 0.004 28 20 26  0.0297
49359.500  0.02848  0.48065 -27.816500  0.00003 0.00003 0.004 28 20 26  0.0574
49360.500  0.03143  0.48072 -27.818680  0.00003 0.00003 0.004 28 20 26 -0.0005
-------------------------------------------------------------------------------

  MJD          LODR    +/-
             (ms/day)

49354.5000    2.2678  0.004
49355.5000    2.2186  0.004
49356.5000    2.1933  0.004
49357.5000    2.1796  0.004
49358.5000    2.2097  0.004
49359.5000    2.2374  0.004
49360.5000    2.1795  0.004
-----------------------------

ERP RESULT with old 1993-Reference Frame

  MJD        XP       YP   UT1-IAT for 0h SIGX   SIGY  SIGLOD NS FIX NV  dLODR 
           arcsec   arcsec     sec      arcsec  arcsec   ms                ms

49354.500  0.01526  0.47709 -27.805600  0.00003 0.00003 0.004 28 20 26   0.0805
49355.500  0.01759  0.47755 -27.807780  0.00003 0.00003 0.004 28 20 26   0.0338
49356.500  0.02024  0.47801 -27.809960  0.00003 0.00003 0.004 28 20 26   0.0079
49357.500  0.02296  0.47917 -27.812140  0.00003 0.00003 0.004 28 20 26  -0.0103
49358.500  0.02631  0.47913 -27.814320  0.00003 0.00003 0.004 28 20 26   0.0289
49359.500  0.02888  0.47991 -27.816500  0.00003 0.00003 0.004 28 20 26  -0.2001
49360.500  0.03204  0.48027 -27.818920  0.00003 0.00003 0.004 28 20 26  -0.2492

-----------------------------

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  002   003    004    005    006    007    008
---------------------------------------------------
 1   20     29     17     19     46     40     13    
 2   28     24     30     22     37     40 E   23 E 
 3   13     34     28     53     35     18     26    
 4   98 E  210 E  231 E   80 E   28 E   61 E   40 E 
 5   39     59     47     56     36     39 E  225 E 
 7   16     19     16     19     25     25     17    
 9   36     44     39     34     45     36     33    
12   38 E   16 E   33 E   39 E   41 E   11 E   17    
13   20     24     20     23     29     25     27    
14   22     17     20     22     21     14      9    
15   43 E   93 E   98 E   49 E   60 E   42 E   47 E 
16   49     29     21     41     14     34     31    
17   55 E   66 E   86 E  313 E   45 E   36 E   33 E 
18   20     22     37     20     36     37     26    
19   21     14     27     17     21     31     15    
20   32     50     50     45     36     34 E   21 E 
21   22     19     21     22     20     21     20    
22   50     39     56     31     23     27 E   26 E 
23   15     16     30     58     50     34     37    
24   76 E   66 E   77 E   53 E   52 E   58 E   60 E 
25   29     29     23     35     35     20     34    
26   36     43     31     44     29     42     40    
27   23     17     24     13     19     27     17    
28   16     17     19     16     15     14     25    
29   22     25     27     29     25     23     15    
31   20     20     23     11     16     24     15    
 
MEAN 39     39     42     38     35     33     29
---------------------------------------------------

REMARKS: (1) modelling problems with PRN04 (days 003-004),
             PRN05 (day 008) and PRN17 (day 005)

                
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#               002  003  004  005  006  007  008
-----------------------------------------------------------
onsa  105001   I'92      1629 1676 1663 1641 1572 1602 1604
kosg  110001 F I'92      1518 1654 1663 1732 1676 1683 1717
madr  120001 F I'92      1686 1684 1661 1702 1653 1648 1695
mate  130001 F           1381 1548 1707 1772 1690 1073 1766
trom  150001 F I'92      1689 1737 1607 1643 1679 1733 1772
wetb  160001 F I'92      1737 1703 1693 1680 1515 1610 1347
mets  180001   I'92      1576 1624 1581 1642 1596 1610 1628
usud  200002             1684 1721 1639 1724 1695 1732 1744
taiw  220001 F I'92      1768 1331  461 1780 1752 1723 1774
tidb  305001 F           1423 1340 1386 1388 1405 1364 1607
yar1  310001 F I'92      1671 1679 1636 1696 1713 1633 1654
hob1  320001             1712 1660 1666 1673 1688 1610 1604
algo  400001 F I'92      1772 1721 1721 1650 1473 1571 1529
stjo  405001 F           1577 1517 1658 1672 1623 1699 1689
wes2  408001             1704 1728 1721 1708 1657 1716 1731
gold  410001 F I'92      1690 1646 1658 1656 1538 1644 1625
jplm  415001 F           1768 1706 1734 1787 1734 1763 1789
fair  420001 F I'92      1778 1650 1692 1832 1777 1824 1813
yell  470001 F I'92      1753 1707 1755 1788 1729 1784 1736
drao  475001 F           1804 1749 1698 1773 1780 1818 1824
rcm5  482001   I'92      1692 1663 1697 1701 1599 1688 1706
sant  500001 F I'92      1675 1629 1596 1647 1620 1640 1656
kour  510001 F           1626 1513 1515 1500 1506 1586 1600
fort  520001             1592 1598 1619 1678 1589 1595 1583
hart  600001 F I'92      1319 1351 1341 1379 1361 1313 1356
masp  610001 F I'92      1677 1690 1650 1659 1697 1723 1731
kokb  700001 F I'92      1750 1707 1743 1766 1674 1674 1751
pama  710001             1695 1662 1701 1693 1684 1642 1635
----------------------------------------------------

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     002  003  004  005  006  007  008
------------------------------------------
  1    1686 1591 1586 1656  551 1176 1673
  2    1965 1984 1952 1989 1963 1916 1956
  3    1702 1717 1660 1743 1725 1670 1651
  4    1723 1785 1682 1741 1738 1746 1768
  5    1805 1788 1755 1767 1651 1567 1424
  7    2092 2109 2024 2213 2172 2107 2158
  9    1473 1572 1590 1593 1622 1558 1616
 12    1616 1587 1621 1645 1640 1728 1713
 13    1705 1692 1606 1623 1666 1702 1811
 14    1691 1774 1758 1773 1695 1729 1713
 15    1931 1854 1761 1939 2017 1966 1998
 16    1647 1515 1641 1712 1694 1516 1675
 17    1684 1759 1728 1767 1779 1715 1671
 18    1882 1793 1732 1841 1805 1855 1821
 19    1823 1105  972 1814 1879 1865 1880
 20    1536 1567 1559 1556 1592 1565 1572
 21    1794 1719 1750 1821 1766 1780 1770
 22    1824 1813 1780 1831 1815 1744 1756
 23    1737 1661 1725 1724 1712 1770 1814
 24    1685 1867 1853 1878 1798 1805 1844
 25    1660 1682 1640 1688 1690 1625 1724
 26    1757 1767 1723 1800 1811 1755 1801
 27    1968 1932 1921 1932 1961 1926 1959
 28    1930 1970 1914 1979 1979 1908 1872
 29    1882 1833 1741 1720 1795 1812 1834
 31    2148 2158 2188 2217 2159 2195 2192
-----------------------------------------

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