Subject: [IGSREPORT-0872] GFZ Analysis Report (week 741)
From: Gerd Gendt and Galina Dick
Date: Thu, 31 Mar 1994 0:13:04 PST

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IGS Electronic Report    Thu Mar 31  0:13:04 PST 1994      Message Number 0872
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Author: Gerd Gendt and Galina Dick
Subject: GFZ Analysis Report (week 741)

Subject: GFZ Analysis Report (741)

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GFZ ANALYSIS REPORT   GPS-WEEK 0741 (DAYS 079-085, DATES 20-03-94 TO 26-03-94)
******************************************************************************

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: 
______________________________________________________________________________
gfz07417.sum           this text file
gfz07417.erp           Earth rotation parameters 
gfz0741[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  UT1R-IAT for 0h SIGX   SIGY  SIGLOD NS FIX NV  dLODR 
           arcsec   arcsec     sec      arcsec  arcsec   ms                ms
49431.500  0.16502  0.41357 -27.982980  0.00005 0.00005 0.005 27 18 25   0.0791
49432.500  0.16517  0.41208 -27.985320  0.00004 0.00005 0.005 29 20 25   0.1492
49433.500  0.16499  0.41011 -27.987660  0.00004 0.00005 0.006 28 19 26   0.1577
49434.500  0.16524  0.40793 -27.990000  0.00004 0.00005 0.006 28 19 26   0.0199
49435.500  0.16673  0.40559 -27.992540  0.00004 0.00005 0.006 29 19 26  -0.0458
49436.500  0.16770  0.40424 -27.995080  0.00004 0.00005 0.005 30 20 25   0.1382
49437.500  0.16864  0.40269 -27.997620  0.00004 0.00005 0.005 29 20 26   0.1038
-------------------------------------------------------------------------------

  MJD          LODR    +/-
             (ms/day)

-----------------------------
49431.5000    2.4191  0.005
49432.5000    2.4892  0.005
49433.5000    2.4977  0.006
49434.5000    2.5599  0.006
49435.5000    2.4942  0.006
49436.5000    2.6782  0.005
49437.5000    2.6438  0.005

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  079    080    081    082    083    084    085
-------------------------------------------------------
 1    25     29     23     31     35     37     43 E
 2    16     33     40     62     24     12     41  
 3     -      -      -      -     30     28      -  
 4    20     10     17     17     11     12     12  
 5    21     28     22     26     21     23     25  
 7    26     37     34     46     36     40     43  
 9    12     18     17     19     19     14     31  
12    13     17     15     12     14     11     25  
13    13     13     11      -      -      -      -  
14    21     28     39     40     25     29     37  
15    21     23     14     33     30     43     28  
16    26     24     19     22     20     16     24  
17    23     53     49     21     42     37     53  
18    25     24     31     26     25 E   24 E   22 E
19    16     37     56     28     30     31     25  
20    17     28     17     23     28     36     19  
21    40     41     54     43     34     62     30  
22    30     18     16     49     18     62     10  
23    45    171     37     40     30     66     59  
24    16     21     24     15     13     14     14  
25    23     18     42     41     30     49     15  
26    74    100     64     58     45     39 E   49 E
27    17     26     33     25     30     44     23  
28    51     46     33     31     16     35     20  
29    35     23     38     25     17 E   21 E   23 E
31    56     33      -      -     38     24     38  
 
MEAN  31     35     34     34     28     36     32
---------------------------------------------------

REMARKS: (1) AS all days
         (2) PRN03 not used on days 79, 80, 81, 85 ( few data)
         (3) PRN13 not used on day  82, 83, 84, 85 ( few data)
         (4) PRN31 not used on day  81             ( few data)
                
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#                79   80   81   82   83   84   85
----------------------------------------------------
onsa  105001   I'92      1141 1545 1549 1557 1425 1553 1562
kosg  110001 F I'92       819  875    0    0    0  900 1681
madr  120001 F I'92       975 1126  839 1498 1023 1087 1285
mate  130001 F           1004  878 1006 1157  912 1000 1125
wetb  160001 F I'92      1405 1306 1220 1218 1002  266  308
mets  180001   I'92      1367 1152  965 1235 1269 1146 1299
usud  200002             1647 1589 1493 1322 1368 1484 1105
taiw  220001 F I'92      1239 1426 1347 1259 1151 1161 1367
tidb  305001 F            912  948  759 1059 1283  988 1056
yar1  310001 F I'92      1254  985  909 1000  832  744 1085
hob1  320001             1489 1455 1351 1334 1447 1413 1435
algo  400002 F I'92      1676 1668 1596 1622 1590 1577 1625
stjo  405001 F           1614 1544 1084  431    0    0    0
wes2  408001             1619 1618 1566 1644 1628 1507 1564
gold  410001 F I'92      1069 1267 1064 1004 1183 1369 1426
jplm  415001 F           1477 1407 1294 1003 1008  961  965
yell  470002 F I'92      1359 1425 1397 1410 1513 1452 1464
drao  475002 F           1604 1116 1120 1659 1713 1638 1653
rcm5  482001   I'92      1596 1654 1567 1597 1600 1511 1522
sant  500001 F I'92      1174  857  725  916  901  884  779
kour  510001 F           1580 1531 1527 1538 1526 1530 1556
fort  520001             1603 1595 1564 1559 1550 1603 1528
areq  530001             1520 1445 1432 1508 1476 1523 1489
hart  600001 F I'92       972  875  852  954  896  912  939
masp  610001 F I'92      1676 1638 1603 1652 1695 1734 1680
kokb  700001 F I'92      1290 1510 1493 1295 1402 1431 1440
pama  710001              887  942  815  978  902  866  994
trom  150001 F I'92         0 1191 1617 1644 1634 1633 1652
fair  420001 F I'92         0  646 1082 1178 1231 1238 1424
stjo  405002 F              0    0    0    0  242 1019 1074
mcmu  800002                0    0    0    0   30  108    0
-----------------------------------------------------------

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      79   80   81   82   83   84   85
------------------------------------------
  1    1303 1263 1307 1342 1439 1437 1364
  2    1330 1499 1332 1190 1069 1294 1471
  3       0    0  322 1232 1280 1225  734
  4    1681 1894 1941 1827 1735 1801 1806
  5    1483 1498 1351 1592 1568 1565 1655
  7    1574 1598 1527 1454 1443 1573 1731
  9    1473 1503 1253 1365 1166 1262 1320
 12    1634 1662 1655 1634 1631 1638 1663
 13    1922 1999  982  214  222    0  288
 14    1460 1298 1311 1413 1383 1530 1408
 15    1130 1269 1289 1237 1330 1217 1337
 16    1501 1646 1675 1831 1619 1646 1989
 17    1522 1567 1626 1604 1500 1469 1513
 18    1483 1618 1654 1563 1500 1549 1837
 19    1314 1455 1424 1323 1370 1391 1555
 20    1579 1522 1467 1487 1312 1556 1525
 21    1165 1124 1221 1350 1371 1307 1331
 22    1446 1435 1432 1444 1263 1312 1417
 23    1351 1394 1283 1341 1250 1372 1353
 24    1816 1917 1966 1831 1819 1659 1781
 25    1450 1487 1346 1474 1379 1428 1290
 26    1082 1249 1360 1449 1425 1471 1631
 27    1424 1673 1503 1350 1321 1474 1676
 28    1257 1134 1156 1221 1361 1376 1378
 29    1344 1530 1407 1589 1513 1514 1639
 31    1244  980   46  874 1163 1172 1390
-----------------------------------------

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