[IGSMAIL-93] ESA/ESOC analysis report
Joachim
Joachim
Sun Sep 13 17:21:37 PDT 1992
***********************************************************************
IGS Electronic Mail 13-SEP-1992 17:21:37 Message Number 93
***********************************************************************
==============================================================================
THIS FILE CONTAINS 3 MESSAGES
==============================================================================
>From: Joachim Feltens
Subject: ESA/ESOC analysis report
------------------------
-------------------------
ANALYSIS CENTRE: ESA/ESOC
-------------------------
OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS AT THE
ESOC PROCESSING CENTER FOR IGS
J.M.Dow, S.Casotto, J.Feltens, S.Frey, C.Garcia-Martinez, T.Martin-Mur
Description of analysis for period 1992 August 30 to September 05
(days 243-249,GPS week 660)
1. SOFTWARE USED: GPSOBS/BAHN5
2. MODELS AND CONSTANTS USED
a) General: no changes with respect to previous runs
b) Satellite Force Model: no changes with respect to previous runs
The following table gives an overview over the satellites that have been
used for the different one-day-arc solutions: "+" used, "-" not used.
__________________________________________________________________________
PRN02| 03| 11| 12| 13| 14| 15| 16| 17| 18| 19| 20| 21| 23| 24| 25| 26| 28|
____-|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DAY| | | | | | | | | | | | | | | | | | |
243|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
244|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
245|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
246|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
247|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
248|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
249|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
c) Ground Stations (if being estimated, one position (X,Y,Z) every day):
The following table gives an overview over the ground stations, that have
been included into the GPS-data processing at ESOC. Except where otherwise
noted ("remarks"), corrections are taken from IGS Mail No. 65 - IGS site
information and coordinates,updated version of IERS/IGS Tables in IGS Mail
No. 33 - (Boucher and Altamimi). From day 247 on,the updated corrections
were taken from IGS Mail No. 90 (Boucher and Altamimi).
__________________________________________________________________________
| | | GPS WEEK 660 |
| | | 2 2 2 2 2 2 2 |
| | | 4 4 4 4 4 4 4 |
SITE | COUNTRY |CODE| 3 4 5 6 7 8 9 | REMARKS
--------------------|-------------|----|---------------------|------------
Algonquin | Canada |ALGO| F F F F F F F |
CANB/Tidbinbilla | Australia |TIDB| e e e e e e e |
Penticton | Canada |DRAO| F F F F F F F |
Fairbanks | U.S.A/Alaska|FAIR| F F F F F F F |
Goldstone | U.S.A. |GOLD| F F F F F F F |
Hartebeesthoek | South Africa|HART| F F F F F F F |
Herstmonceux | U.K. |HERS| F F F F F F F |
Kokee Park | U.S.A/Hawaii|KOKB| e e e e e e e |
Kourou (ESA) | French Guyan|KOUR| ------------------- | own estim.
Madrid | Spain |MADR| F F F F F F F |
Maspalomas (ESA) | Spain/Can.Is|MASP| e e e e e e e |
Matera | Italy |MATE| F F F F --- F F |
McMurdo | Antarctica |MCMU| e e e e e e -- |
Metsahovi | Finland |METS| -- F F F F F F |
Ny Alesund/Spitzb.| Norway |NYAL| e e e e e e e |
Onsala | Sweden |ONSA| e e e e e e e |
Pamate/Tahiti | France |PAMA| e e e e e e e |
Santiago | Chile |SANT| F F F F F F F |
Tai-Shi | Taiwan |TAIW| e e e e e e e |
Usuda | Japan |USUD| e ------------ e e |
Wettzell | Germany |WETT| F ------ F F F F |
Yaragadee | Australia |YAR1| F F F F F F F |
Yellowknife | Canada |YELL| F F --- F F F F |
with: "F" ... coordinates of ground station kept fixed,
"e" ... coordinates of ground station estimated,
"-" ... ground station not included on that day.
d) Earth Rotation Parameters: no changes with respect to previous runs
e) Observations: no changes with respect to previous runs
3. PARAMETERS TO BE ESTIMATED PER 1-DAY ARC
a) Satellite Parameters per Spacecraft: no changes with respect to
previous runs
b) Station related parameters per ground station: no changes with respect to
previous runs
c) Earth Rotation Parameters: no changes with respect to
previous runs
4. PARAMETERS TO BE KEPT FIXED IN THE SOLUTION
a) Satellite Parameters per Spacecraft: no changes with respect to
previous runs
b) Station related parameters per Ground Station: no changes with respect to
previous runs
5. PRODUCTS GENERATED
The following products are generated and stored in CDDIS at NASA/GSFC:
ESA06600.EPH - Precise GPS orbits for day 243 (August 30)
ESA06601.EPH - Precise GPS orbits for day 244 (August 31)
ESA06602.EPH - Precise GPS orbits for day 245 (September 01)
ESA06603.EPH - Precise GPS orbits for day 246 (September 02)
ESA06604.EPH - Precise GPS orbits for day 247 (September 03)
ESA06605.EPH - Precise GPS orbits for day 248 (September 04)
ESA06606.EPH - Precise GPS orbits for day 249 (September 05)
ESA06607.ERP - Earth rotation results for week beginning 1992 August 30
ESA06607.SUM - The name of this text file
==============================================================================
>From: Ch. Reigber
Subject: GFZ analysis report
-------------------
Report for GPS Week 657 (Days 222-228) from GFZ
===============================================
This report is generated by the GeoForschungsZentrum Potsdam (GFZ)
on a weekly basis for the International GPS Geodynamics Service (IGS).
PRODUCT SUMMARY
GFZ0657*.EPH: GPS ephemerides for GPS Week 657 (SP3 format, pos. and vel.)
* represents: 0 for Sunday, .... , 6 for Saturday
GFZ06577.ERP: Earth rotation parameter (UT1 corrections are not included)
GFZ06577.CLK: ST and SV clock parameters of each observation epoch (the
maser-based clock at Fairbanks is taken as reference clock)
GFZ06577.SUM: Summary file for reporting week
The above specified products are available at CDDIS. The ERP results are
submitted additional to IERS Central Bureau and IERS Sub Bureau for Rapid
Service and Predictions.
*********************************************************************************
Note: Due to AS for the days 222, 223 and 228 our orbit files do not include
the satellites 2, 16, 17, 20, 21, 23, 24, 25, 26, 28
*********************************************************************************
CORE STATION SUMMARY
The Core Station data used in the solutions is given below.
Day of Week 657
S M T W T F S
U O U E H R A
Site N N E D U I T
Name Code
---------------------------------------------------------
Algonquin ALGO X X X X X X X
Fairbanks FAIR X X X X X X X
Goldstone DS10 - X X X X X X
Hartebeesthoek HART X X X X X X X
Kokee Park KOKR X X X X X X X
Mc Murdo MCMU X X X X X X X
Ny-Alesund NALL X X X X X X X
Pamatai PAMA X X X - X X X
Santiago SANT X X X X X - X
Tai Shi TAIW - - X X X - -
Tidbinbilla TIDB X X X X X X X
Tromsoe TROM X X X X X X X
Usuda USUD - X X X X X X
Wettzell WTZ1 X X X X X X X
Yellowknife YELL X X X X X X X
Yarragadee YAR1 X X X X X X X
---------------------------------------------------------
SOLUTION CHARACTERISTICS
1. Analysis Center: GFZ/DLR
2. Analysing Team: D. Angermann, R. Galas, Ch. Reigber,
W. Sommerfeld, S.Y. Zhu
3. Solution Identifier: EPH(GFZ)92G01-DDD
ERP(GFZ)92G02-DDD
CLK(GFZ)92G01-DDD (only relative)
4. Software used: GEPARD4.0
5. Defintion of Terrestrial Reference Frame
Origin: Nominally ITRF-90
Orientation: Nominally ITRF-90
Reference Epoch: 1992.352 (MJD 48750)
Fixed set of stations: Y. Bock Solution (IGS Message No.56)
ALGO, YELL, FAIR, KOKR, TROM, WTZ1, YAR1, USUD, NALL, PAMA,
MCMU, TAIW, DS10, SANT, HART
6. Data used:
- undifferenced pseudo ranges and carrier phases
- 1-day arc solutions
7. Adjusted parameters:
- State vector of all GPS satellites
- Daily polar motion
- Coordinate corrections for non-fixed stations
- Troposheric zenith path delay
- Solar radiation scale and y-bias
- Ambiguities
- ST and SV clock parameters of each observation epoch (the
maser-based clock at Fairbanks is taken as reference clock)
SOLUTION STATISTICS
Arc No. 0 1 2 3 4 5 6
------------------------------------------------------------------------
Observation Interval [sec] 120 120 360 360 360 360 120
Number of observations 15673 17952 25077 24340 25839 21023 21187
RMS of carrier phases [cm] 0.3 0.3 0.7 0.8 0.9 0.7 0.4
RMS of code measurements [cm] 39.7 40.7 47.4 40.2 40.4 38.3 43.2
------------------------------------------------------------------------
- GFZ06577.ERP
============
Solution identifier for ERP-Results:
* GPS week 650-653: ERP(GFZ)92G01-DDD
* since GPS week 654: ERP(GFZ)92G02-DDD
Please notice, that these two solutions are related to
different reference frames.
MJD x sigmax y sigmay
48843.5 -.0707 0.0012 0.4658 0.0015
48844.5 -.0700 0.0010 0.4702 0.0014
48845.5 -.0687 0.0003 0.4728 0.0003
48846.5 -.0657 0.0004 0.4746 0.0005
48847.5 -.0640 0.0004 0.4766 0.0005
48848.5 -.0622 0.0006 0.4778 0.0006
48849.5 -.0590 0.0008 0.4806 0.0012
- GFZ06577.CLK
============
The clock parameter file is avaibable at CDDIS.
The format of this file is described in the
IGS Message No. 55.
==============================================================================
>From: Dennis McCarthy
Subject: Preliminary look at GPS Earth orientation
-----------------------------------------
Date: 11 September 1992
An updated look at Earth orientation data submitted to the IERS
follows. Units are milliseconds of arc for x and y, and
milliseconds of time for UT1-UTC.
Contributor Data Span Points Mean Standard Deviation
(NEOS-GPS)
x y UT1-UTC x y UT1-UTC
U. of Texas 48794.5 53 -0.79 -2.79 1.33 1.83
-48848.5
Scripps 48780.5 82 -1.12 -1.59 0.67 0.50
-48862.5
U. of Berne 48792.5 8 -0.38 0.19 -1.50 1.64 1.72 0.14
(ITRF90) -48799.5
U. of Berne 48800.5 64 -0.50 0.29 -0.17 0.76 0.90 0.27
(ITRF91) -48863.5
JPL 48794.5 62 -1.27 -0.07 0.62 0.92
-48863.5
GFZ 48795.0 55 -2.41 -1.80 1.28 1.36
-48849.5
ESOC 48763.5 72 -1.64 0.69 1.41 2.20
-48870.5
Plots are available by FAX to anyone interested.
Regards,
Dennis McCarthy
dmc at maia.usno.navy.mil
More information about the IGSMail
mailing list