Subject: [IGSREPORT-0932] GFZ Analysis Report (week 745)
From: Gerd Gendt and Galina Dick
Date: Mon, 2 May 1994 3:18:21 PDT

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IGS Electronic Report    Mon May  2  3:18:21 PDT 1994      Message Number 0932
******************************************************************************

Author: Gerd Gendt and Galina Dick
Subject: GFZ Analysis Report (week 745)

Subject: GFZ Analysis Report (745)

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GFZ ANALYSIS REPORT   GPS-WEEK 0745 (DAYS 107-113, DATES 17-04-94 TO 23-04-94)
******************************************************************************

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: 
______________________________________________________________________________
gfz07457.sum           this text file
gfz07457.erp           Earth rotation parameters 
gfz0745[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
           
           UT discontinuity at 49461.5, for better alignment to IERS
 
  MJD        XP       YP  UT1R-IAT for 0h SIGX   SIGY  SIGLOD NS FIX NV  dLODR 
           arcsec   arcsec     sec      arcsec  arcsec   ms                ms
49459.500  0.18413  0.36179 -28.050600  0.00004 0.00004 0.005 30 20 25   0.0295
49460.500  0.18439  0.35964 -28.052960  0.00004 0.00003 0.004 30 20 25  -0.0068
49461.500  0.18450  0.35812 -28.055320  0.00003 0.00003 0.004 29 20 26   0.0620
49461.500  0.18450  0.35812 -28.062520  0.00003 0.00003 0.004 29 20 26   0.0620 
49462.500  0.18425  0.35698 -28.064880  0.00004 0.00003 0.004 28 19 25  -0.0183
49463.500  0.18451  0.35558 -28.067240  0.00003 0.00003 0.004 28 19 26   0.0547
49464.500  0.18427  0.35411 -28.069600  0.00003 0.00003 0.004 29 19 26  -0.1232
49465.500  0.18399  0.35237 -28.072180  0.00003 0.00003 0.004 29 19 25   0.0402
-------------------------------------------------------------------------------

  MJD          LODR    +/-
             (ms/day)

-----------------------------
49459.5000    2.3895  0.005
49460.5000    2.3532  0.004
49461.5000    2.4220  0.004
49462.5000    2.3417  0.004
49463.5000    2.4147  0.004
49464.5000    2.4568  0.004
49465.5000    2.6202  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  107    108    109    110    111    112    113
-------------------------------------------------------
 1    67 E   50 E   77 E   46 E   56 E   47     53  
 2    39     34     33     33     27     35     42  
 4     9     14     12     13     20     11     14  
 5    22     19     35     17     41     25     19  
 6     -      -      -      -    112 E  141 E   48 E
 7    59 E   48 E   82 E  108 E   87 E   55 E   75 E
 9    26     15     41      -      -     20     30  
12    14     21     11     14     12     15     10  
13    16     16     15     12     13      -      -  
14    27     27     21     21     22     24     19  
15    21     28     36     15     22     19     60  
16    15     18     19     17     17      9     23  
17    51     24     39     50     47     57     45  
18    32 E   49 E   40 E   35     32     41     36  
19    33     38     43     41     27     28     30  
20    15     17     22     15     23     22     23  
21    26     30     29     24     25     31     21  
22    64     42     60     40     51     40     52  
23    35     23     22     22     13     20     20  
24    18     22     16     12     14     15     15  
25    64     32     50     47     41     53     37  
26    43 E   39 E   38 E   45 E   36     21     15  
27    30     28     45     36     40     31     35  
28    82 E   62 E   95 E   88 E   75 E   69 E  115 E
29    35 E   41 E   44 E   38     33     24     26  
31   206 E   71 E  127 E   49 E   41 E   25 E  300 E
 
MEAN  40     36     44     42     44     34     43
---------------------------------------------------

REMARKS: (1) AS all days
         (2) PRN6  not used on days 107 to 109 (no data and manoeuvre)
         (3) PRN9  manoeuvre on day 110
         (4) PRN13 not used on days 112 to 113 (no or few data)
         (5) station TIDB not used starting at day 110
                
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#               107  108  109  110  111  112  113
----------------------------------------------------
onsa  105001   I'92      1641 1586 1485 1637 1275 1646 1232
kosg  110001 F I'92      1654 1684 1730 1669 1700 1709 1628
madr  120001 F I'92      1584 1543 1580 1308 1549 1670 1559
mate  130001 F           1699 1602 1514 1463 1453 1315  966
trom  150001 F I'92      1585 1616 1667 1646 1672 1681 1628
wetb  160001 F I'92      1710 1681 1744 1688 1718 1703 1488
mets  180001   I'92      1574 1554 1559 1538 1563 1585 1607
usud  200002             1488 1577 1656 1546 1642 1639 1638
taiw  220001 F I'92       404 1659 1721 1661 1707 1670 1596
tidb  305001 F           1169 1457 1129    0    0    0    0
yar1  310001 F I'92      1534 1606 1404 1014 1659 1678 1609
hob1  320001             1591 1596 1555 1519 1582 1518 1569
algo  400002 F I'92      1539 1540 1631 1612 1656 1599 1598
stjo  405002 F           1606 1591 1677 1654 1675 1657 1636
wes2  408001             1495 1451 1550 1561 1676 1639 1629
gold  410001 F I'92      1563 1561 1675 1655 1691 1603 1586
jplm  415001 F           1633 1569 1723 1710 1750 1765 1771
fair  420001 F I'92      1344 1387 1564 1679 1729 1726 1623
yell  470002 F I'92      1522 1524 1588 1652 1718 1674 1670
drao  475002 F           1568 1608 1732 1725 1779 1743 1736
rcm5  482001   I'92      1589 1595 1694 1676 1701 1654 1660
sant  500001 F I'92      1667 1602 1640 1608 1705 1749 1638
kour  510001 F           1532 1496 1558 1562 1604 1559 1512
fort  520001             1510 1474 1547 1505 1548 1594 1568
areq  530002             1577 1196    0    0    0  399 1706
hart  600001 F I'92      1371 1310 1318 1238 1360 1327 1316
masp  610001 F I'92      1661 1659 1727 1688 1724 1735 1738
kokb  700001 F I'92      1541 1547 1667 1623 1710 1637 1634
pama  710001             1209 1344 1383 1324 1436 1423 1367
mcmu  800002             1589 1636 1740 1672 1682 1709 1709
-----------------------------------------------------------

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     107  108  109  110  111  112  113
------------------------------------------
  1    1600 1665 1532 1630 1658 1660 1713
  2    1696 1702 1588 1539 1548 1551 1579
  4    2032 2015 1991 1982 2073 2049 2036
  5    1834 1852 1729 1727 1784 1821 1963
  6       0    0 1966 1961 1959 2054 2104
  7    1702 1693 1743 1704 1682 1713 1739
  9    1584 1602 1571    0 1089 1473 1596
 12    1720 1618 1567 1580 1528 1626 1726
 13    1825 1732 1434 1214 1285  650    0
 14    1739 1784 1645 1630 1631 1672 1698
 15    1570 1627 1512 1483 1497 1447 1439
 16    2118 2245 2289 2284 2304 2357 2198
 17    1876 1994 1820 1863 1849 1828 1944
 18    1975 1987 1892 1780 1885 1958 1982
 19    1885 1954 1900 1736 1795 1739 1647
 20    1787 1819 1724 1737 1781 1761 1786
 21    1607 1733 1587 1588 1565 1638 1628
 22    1682 1859 1790 1779 1766 1768 1751
 23    1793 1893 1850 1824 1811 1784 1839
 24    2167 2160 2217 2077 2193 2174 2158
 25    1778 1869 1748 1741 1737 1787 1757
 26    2000 1887 1865 1993 2058 2114 2081
 27    1963 2026 2005 1885 1923 1941 1793
 28    1711 1842 1711 1661 1720 1784 1793
 29    1774 1892 1818 1776 1893 1875 1850
 31    1731 1801 1664 1659 1650 1782 1817
-----------------------------------------

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