[IGSREPORT-1019] ESA07517.SUM
ESOC
ESOC
Thu Jun 9 10:34:46 PDT 1994
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IGS Electronic Report Thu Jun 9 10:34:46 PDT 1994 Message Number 1019
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Author: ESOC IGS-team
Subject: ESA07517.SUM
Subject: ESA07517.SUM
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ANALYSIS CENTRE: ESA/ESOC
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OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS
AT THE ESOC PROCESSING CENTRE FOR IGS
J.M.Dow, T.Martin-Mur, J.Feltens, C.Garcia-Martinez, M.A. Bayona-Perez
Description of analysis for period 1994 May 29 - Jun 04
(week 0751)
1. SOFTWARE USED: GPSOBS/BAHN-Version 5
2. MODELS USED AND PARAMETERS ESTIMATED/FIXED:
For a description of models and parameters used ==> see IGS - Mail 51
For updates of the models and parameters used ==> see IGS - Mail 114 and
see IGS - Rep. 224,277
3. REMARKS:
- From this week we have started to use a modified strategy for
clock bias estimation. We are obtaining (but not using for the
estimation) the residuals of double differenced pseudo-ranges and
using them to estimate daily pseudo-range biases, using the
following assumptions:
- P-code pseudo-ranges are not biased.
- The biases for CA-code pseudo-ranges for TurboRogue receivers
have an apriori value of zero, with an uncertainty of 1 metre.
- If a receiver is not tracking P-code pseudo-ranges, its
average CA-code bias is zero.
- If the std. dev. about the average of the values of the CA-code
biases for a receiver is less than 3 metres, all of them are
the same and equal to the average value.
Only those combinations receiver-satellite for which it is possible
to observe and estimate a bias using the previously defined
procedure are used for clock bias estimation. As an example, for
this week we were not able to obtain pseudo-range biases for MCMU,
it seems that the value of the bias is pass dependent and not
satellite dependent. For PAMA, only 3 to 4 biases are observable
every day (sv 10, 17, 35, 39), but this can be because the way
we do our dd combinations. It was not possible to obtain a value
for the bias of sv-27 for non TurboRogue receivers for the last day,
because they changed from AS to non AS tracking.
We expect to obtain clock bias rms in the order of 1 metre (3 ns),
that is the level of noise for the pseudo-ranges needed for
clock bias initialization (this value including measurement noise
and bias uncertainty).
4. GROUND STATIONS: Altamimi and Boucher, IGS Mails 421 and 430,
ITRF92 at 1994.0 and localtie.tab.
_______________________________________________________________________
GPSweek|ALGO GOLD KIRU KOUR MCMU PIE1 TAIW TSKB YAR1 |f |e |t
0751___| AREQ HART KOKB MADR PAMA RCM5 TIDB USUD YELL |i |s |o
|DAY| FAIR HOB1 KOSG MASP PERT SANT TROM WETT |x.|t.|t.
---|---|------------------------------------------------------|--|--|--
|149| FeF FF- eFF eFe --e eeF eFF eeF FF |13|10|23
|150| FeF FFe eFF eFe eee -eF eFF eeF FF |13|12|25
|151| FeF FFe eFF eFe eee -eF eFF eeF FF |13|12|25
|152| FeF FFe eFF eFe eee -eF eFF eeF FF |13|12|25
|153| FeF FFe eFF eFe eee -eF eFF eeF FF |13|12|25
|154| FeF FFe eFF eFe eee -eF eFF eeF FF |13|12|25
|155| FeF FF- eFF eFe eee --F eFF eeF FF |13|10|23
with: "F" ... coordinates of ground station kept fixed,
"e" ... coordinates of ground station estimated,
"-" ... ground station not included on that day.
5. ORBIT FIT MINUS EXTRAPOLATION FROM PREVIOUS DAY, RMS IN <CENTIMETER>
\DAY| 149 150 151 152 153 154 155
\ |
\ |
SAT\|
----|-------------------------------------------
02 | 72 70 103 32 85 83 68
12 | 56 102 47 78 29 84 28
14 | 81 38 45 27 37 40 30
15 | 89 95 45 76 80 95 93
16 | 63 84 23 25 39 26 28
17 | 58 62 93 32 50 60 53
18 | 44 72 64 44 29 50 51
19 | 64 97 67 74 40 54 69
20 | 61 75 84 28 130 43 87
21 | 35 56 24 23 34 24 23
22 | 55 65 66 43 58 62 96
23 | 21 44 30 27 14 26 30
24 | 112 93 64 66 117 66 103
25 | 65 97 58 51 76 54 73
26 | 39 157 36 43 29 90 62
27 | 75 80 144 65 41 81 56
28 | 54 43 36 67 68 37 38
01 | 57 43 56 39 53 42 39
29 | 36 79 56 37 33 36 54
31 | 52 94 45 53 51 39 37
07 | 53 108 50 65 45 47 52
09 | 87 173 92 70 104 72 77
05 | 66 66 63 36 32 43 66
04 | 91 117 47 43 91 52 38
06 | 97 50 47 37 59 45 63
6. GROUND STATIONS STATISTICS, RESIDUALS RMS OF DOUBLE DIFFERENCE PHASES
IN <MILLIMETER>, nmeas = NUMBER OF MEASUREMENTS
\DAY| 149 150 151 152 153 154 155
\ |
\ |
STAT\| nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS
-----|-----------------------------------------------------------------------
ALGO | 2495/ 12 2550/ 10 2469/ 11 2272/ 11 2314/ 11 2267/ 10 2530/ 9
AREQ | 1906/ 10 1917/ 8 1844/ 8 1673/ 8 1707/ 8 1691/ 9 1475/ 9
FAIR | 953/ 11 957/ 10 860/ 10 761/ 11 858/ 10 931/ 11 1270/ 10
GOLD | 1995/ 9 970/ 10 1029/ 10 980/ 10 980/ 10 1030/ 10 1251/ 9
HART | 412/ 15 528/ 10 599/ 10 695/ 10 709/ 10 704/ 10 717/ 10
HOB1 | 0/ 0 2126/ 8 1992/ 9 1125/ 8 1827/ 8 2325/ 8 0/ 0
KIRU | 687/ 13 585/ 11 591/ 11 665/ 11 657/ 11 621/ 12 827/ 11
KOKB | 1073/ 12 27/ 10 745/ 10 1520/ 10 1767/ 10 1837/ 11 2137/ 10
KOSG | 1548/ 9 1472/ 8 1401/ 9 1208/ 9 1232/ 10 1253/ 9 1448/ 9
KOUR | 1163/ 15 1084/ 10 1074/ 11 955/ 12 977/ 12 1099/ 11 1312/ 10
MADR | 2790/ 10 2867/ 9 2890/ 9 2465/ 9 2451/ 10 2547/ 10 3184/ 9
MASP | 1887/ 11 1785/ 9 1763/ 9 1597/ 9 1720/ 9 1753/ 9 1949/ 9
MCMU | 0/ 0 1302/ 9 1776/ 9 1624/ 8 1601/ 9 1534/ 9 1982/ 8
PAMA | 0/ 0 27/ 12 80/ 13 107/ 11 109/ 11 120/ 12 109/ 11
PERT | 1846/ 14 944/ 11 900/ 11 1441/ 11 1603/ 10 1623/ 9 1873/ 9
PIE1 | 1782/ 9 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
RCM5 | 1648/ 13 1648/ 10 1675/ 10 1488/ 10 1429/ 11 1463/ 10 0/ 0
SANT | 1993/ 11 2153/ 9 2161/ 9 1980/ 9 2007/ 10 1507/ 9 501/ 9
TAIW | 1436/ 12 1818/ 10 1833/ 10 1672/ 10 1770/ 10 1773/ 10 1922/ 10
TIDB | 1605/ 13 2331/ 9 2151/ 9 2180/ 9 2336/ 8 2088/ 8 2302/ 9
TROM | 720/ 10 532/ 10 599/ 10 640/ 9 618/ 10 591/ 10 910/ 9
TSKB | 2102/ 13 1969/ 10 1993/ 9 1864/ 9 1954/ 9 2023/ 9 2171/ 9
USUD | 2368/ 13 2971/ 10 3211/ 10 2987/ 10 2916/ 10 2830/ 10 2845/ 10
WETT | 1165/ 10 1223/ 9 987/ 9 573/ 9 832/ 10 1136/ 10 1292/ 9
YAR1 | 2430/ 14 1563/ 10 1681/ 10 1944/ 10 1904/ 10 1914/ 9 2521/ 9
YELL | 794/ 10 813/ 9 788/ 9 632/ 10 584/ 10 638/ 10 1060/ 9
7. SATELLITES STATISTICS, RESIDUALS RMS OF DOUBLE DIFFERENCE PHASES
IN <MILLIMETER>, nmeas = NUMBER OF MEASUREMENTS
\DAY| 149 150 151 152 153 154 155
\ |
\ |
SAT\| nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS nmeas/RMS
-----|-----------------------------------------------------------------------
PRN02| 1547/ 13 1440/ 10 1543/ 10 1508/ 10 1560/ 10 1494/ 9 1487/ 10
PRN12| 1741/ 11 1598/ 9 1619/ 9 1532/ 9 1572/ 10 1562/ 10 1620/ 9
PRN14| 1489/ 13 1406/ 9 1359/ 9 1301/ 10 1435/ 10 1429/ 9 1498/ 9
PRN15| 1737/ 13 1554/ 10 1575/ 9 1526/ 10 1589/ 10 1608/ 10 1621/ 9
PRN16| 969/ 12 1591/ 10 1568/ 10 1372/ 10 1427/ 9 1466/ 9 1438/ 9
PRN17| 1544/ 12 1553/ 10 1700/ 9 1561/ 10 1684/ 10 1683/ 10 1528/ 9
PRN18| 1771/ 11 1732/ 9 1695/ 10 1649/ 10 1700/ 10 1722/ 10 1813/ 9
PRN19| 1799/ 13 1727/ 9 1670/ 10 1605/ 10 1745/ 10 1769/ 10 1682/ 9
PRN20| 1709/ 11 1517/ 9 1503/ 9 1013/ 9 955/ 10 1411/ 10 1630/ 9
PRN21| 1270/ 10 1344/ 9 1494/ 9 1455/ 9 1569/ 9 1483/ 9 1533/ 9
PRN22| 1635/ 13 1701/ 10 1675/ 10 1489/ 10 1576/ 10 1608/ 10 1574/ 10
PRN23| 1295/ 9 1215/ 8 1356/ 9 1333/ 9 1409/ 10 1409/ 9 1400/ 9
PRN24| 1401/ 12 1366/ 10 1392/ 10 1299/ 10 1457/ 10 1495/ 10 1498/ 10
PRN25| 1394/ 13 1258/ 10 1243/ 11 1200/ 10 1242/ 10 1240/ 10 1213/ 10
PRN26| 1039/ 11 1154/ 9 1270/ 9 1225/ 10 1337/ 9 1374/ 9 1318/ 9
PRN27| 1197/ 13 1161/ 9 1119/ 10 1173/ 10 1348/ 10 1402/ 9 1430/ 9
PRN28| 1728/ 11 1556/ 10 1634/ 10 1599/ 10 1654/ 9 1659/ 9 1641/ 10
PRN01| 1203/ 12 1370/ 9 1382/ 9 1374/ 9 1460/ 10 1372/ 10 1406/ 9
PRN29| 1388/ 12 1326/ 9 1350/ 9 1276/ 10 1311/ 9 1317/ 9 1275/ 9
PRN31| 1227/ 11 1190/ 9 1260/ 10 1240/ 10 1293/ 10 1261/ 10 1231/ 10
PRN07| 1432/ 12 1318/ 10 1420/ 10 1389/ 10 1438/ 10 1497/ 10 1440/ 9
PRN09| 1837/ 12 1719/ 9 1777/ 10 1611/ 9 1577/ 10 1565/ 10 1757/ 9
PRN05| 1591/ 11 1553/ 10 1571/ 9 1512/ 9 1557/ 10 1540/ 10 1655/ 10
PRN04| 1312/ 13 1265/ 10 1322/ 10 1248/ 10 1320/ 9 1356/ 9 1358/ 10
PRN06| 1543/ 12 1548/ 10 1595/ 10 1558/ 10 1647/ 10 1576/ 10 1542/ 10
8. PRODUCTS GENERATED:
The following products are generated and stored in CDDIS at NASA/GSFC:
ESA0751*.EPH - Precise GPS orbits and clocks, * = day of the week (0-6)
ESA07517.ERP - Earth rotation results for week 0751 (including DUT1R)
ESA07517.SUM - This summary file
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