[IGSMAIL-104] Processing Center 040-GFZ
Ch.
Ch.
Wed Sep 23 11:49:23 PDT 1992
***********************************************************************
IGS Electronic Mail 24-SEP-1992 11:06:14 Message Number 104
***********************************************************************
==============================================================================
THIS FILE CONTAINS 3 MESSAGES
==============================================================================
^From: Ch. Reigber
Subject: Processing Center 040-GFZ
-------------------------
Report for GPS Week 659 (Days 236-242) from GFZ
===============================================
This report is generated by the GeoForschungsZentrum Potsdam (GFZ)
on a weekly basis for the International GPS Geodynamics Service (IGS).
PRODUCT SUMMARY
GFZ0659*.EPH: GPS ephemerides for GPS Week 659 (SP3 format, pos. and vel.)
* represents: 1 for Monday, .... , 6 for Saturday
GFZ06597.ERP: Earth rotation parameter (UT1 corrections are not included)
GFZ06597.CLK: ST and SV clock parameters of each observation epoch (the
maser-based clock at Fairbanks is taken as reference clock)
GFZ06597.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 all product files do not include the day 236,
in the orbit file GFZ06591.EPH (day 237) satellite 16
is eliminated because of large overlap differences (more than
10 m)
*********************************************************************************
CORE STATION SUMMARY
The Core Station data used in the solutions is given below.
Day of Week 659
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
Goldstone DS10 - X X X X X X
Hartebeesthoek HART - 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
Ny-Alesund NALL - - - - - - -
Pamatai PAMA X X X X X X X
Santiago SANT - X X X X - X
Tai Shi TAIW - - X X X X X
Tidbinbilla TIDB - 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
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, 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] 120 360 360 360 360 360 360
Number of observations 1626 12590 17359 23361 22211 23270 23932
RMS of carrier phases [cm] 0.5 0.5 0.5 0.8 0.8 0.8 0.8
RMS of code measurements [cm] 45.2 43.1 47.3 47.6 48.0 47.3 46.9
------------------------------------------------------------------------
- GFZ06597.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
48858.5 -.0333 0.0007 0.4929 0.0008
48859.5 -.0306 0.0004 0.4956 0.0004
48860.5 -.0284 0.0003 0.4959 0.0002
48861.5 -.0245 0.0004 0.4972 0.0003
48862.5 -.0210 0.0003 0.4984 0.0003
48863.5 -.0174 0.0003 0.5008 0.0002
- GFZ06597.CLK
============
The clock parameter file is avaibable at CDDIS.
The format of this file is described in the
IGS Message No. 55.
==============================================================================
^From: IERS CB
Subject: EARTH ORIENTATION Bulletin number 7 - 23 September 1992 -
---------------------------------------------------------
*******************************************
* *
IGS'92 EARTH ORIENTATION BULLETIN 7
* *
*******************************************
23 SEPTEMBER 199
1 - EARTH ORIENTATION PARAMETERS (IERS/CB evaluation) : EOP(IERS) 90 C 04
Date MJD x y UT1-UTC
1992 0.0001" 0.00001s
(0h UTC)
AUG 23 48857 -403.0 4877.0 36387.4
AUG 24 48858 -374.0 4889.0 36224.3
AUG 25 48859 -344.0 4902.0 36046.1
AUG 26 48860 -312.0 4916.0 35842.0
AUG 27 48861 -279.0 4932.0 35609.7
AUG 28 48862 -246.0 4948.0 35348.9
AUG 29 48863 -214.0 4965.0 35074.6
AUG 30 48864 -185.0 4980.0 34801.6
AUG 31 48865 -160.0 4992.0 34550.3
SEP 1 48866 -137.0 5000.0 34326.7
SEP 2 48867 -116.0 5005.0 34135.2
SEP 3 48868 -94.0 5006.0 33971.4
SEP 4 48869 -70.0 5006.0 33826.6
SEP 5 48870 -45.0 5006.0 33691.1
SEP 6 48871 -19.0 5010.0 33555.0
SEP 7 48872 7.0 5016.0 33409.7
SEP 8 48873 32.0 5023.0 33250.6
SEP 9 48874 56.0 5031.0 33074.7
SEP 10 48875 80.0 5040.0 32882.0
SEP 11 48876 104.0 5048.0 32677.8
SEP 12 48877 127.0 5054.0 32464.5
SEP 13 48878 151.0 5058.0 32249.9
SEP 14 48879 175.0 5061.0 32039.0
SEP 15 48880 199.0 5063.0 31836.8
SEP 16 48881 223.0 5064.0 31646.0
SEP 17 48882 247.0 5065.0 31468.3
SEP 18 48883 270.0 5066.0 31301.3
SEP 19 48884 294.0 5065.0 31138.0
SEP 20 48885 317.0 5064.0 30970.0
SEP 21 48886 340.0 5063.0 30785.6
2 - INDIVIDUAL SERIES OF EARTH ORIENTATION PARAMETERS
The series listed hereafter,obtained by the IGS Processing Centres,
are described in the IGS'92 Earth Orientation Bulletin number 2 and in
the IGSMail Messages .
Note : AS (antispoofing) was activated on several satellites on
August 1, 2, 3, 8, 9,10, 15,16,17, 23,24,25
Sept. 12,13 and 14.
2 -a - EOP(CODE) 92 P 04
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 23 48857.50 -366.9 4909.4 36601.3 72.0 1.7 1.3 1.3
AUG 24 48858.50 -330.1 4898.8 36440.6 72.0 1.4 1.2 1.3
AUG 25 48859.50 -305.4 4916.2 36256.8 72.0 1.2 1.2 0.9
AUG 26 48860.50 -285.4 4937.5 36043.6 72.0 0.9 0.9 0.8
AUG 27 48861.50 -252.3 4951.5 35804.9 72.0 0.7 0.7 0.5
AUG 28 48862.50 -221.5 4968.4 35545.0 72.0 0.7 0.8 0.5
AUG 29 48863.50 -191.4 4986.5 35276.9 72.0 0.9 0.9 0.7
AUG 30 48864.50 -157.9 5013.7 35013.5 72.0 1.0 1.0 0.7
AUG 31 48865.50 -139.3 5021.7 34776.8 72.0 0.9 1.0 0.8
SEP 1 48866.50 -124.0 5029.4 34573.2 72.0 1.2 1.2 0.8
SEP 2 48867.50 -96.2 5023.0 34402.8 72.0 1.1 1.2 0.8
SEP 3 48868.50 -82.0 5016.0 34251.8 72.0 1.0 0.9 0.9
SEP 4 48869.50 -60.3 5022.7 34121.9 72.0 0.9 0.9 0.7
SEP 5 48870.50 -31.5 5029.1 33987.9 72.0 1.0 0.9 0.8
SEP 6 48871.50 -10.3 5034.2 33848.9 72.0 1.0 1.0 0.9
SEP 7 48872.50 21.6 5043.8 33698.0 72.0 0.9 0.8 0.8
SEP 8 48873.50 51.7 5051.7 33529.6 72.0 1.1 1.0 0.8
SEP 9 48874.50 70.3 5058.6 33341.0 72.0 0.9 0.9 0.8
SEP 10 48875.50 87.7 5068.6 33140.4 72.0 1.0 0.9 0.7
2 -b - EOP(CSR) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
A recent description of this analysis can be found in IGSMail 101.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 18 48852.50 -527.7 4870.5 431 2.1 2.5
AUG 19 48853.50 -500.7 4874.6 494 1.9 1.9
AUG 20 48854.50 -463.9 4865.2 441 2.0 2.5
AUG 21 48855.50 -430.5 4880.4 454 2.1 2.6
AUG 25 48859.50 -321.2 4926.6 471 1.8 1.9
AUG 26 48860.50 -281.7 4941.8 460 1.6 1.9
AUG 27 48861.50 -249.5 4955.5 475 1.7 1.9
AUG 28 48862.50 -220.5 4965.0 491 1.8 2.2
AUG 29 48863.50 -186.1 4984.9 500 1.6 1.8
2 -c - EOP(EMR) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
First submission, described in IGSMail 101.
Mean bias relative to IERS (unit:mas) : dx = +1.68 +- 0.29 ,dy = +2.77 +- 0.20
Weighted rms residual, bias taken out : rx = 1.37 mas ry = 0.92 mas.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 4 48838.50 -804.0 4564.0 5.4 4.1
AUG 5 48839.50 -785.2 4579.2 5.5 4.1
AUG 6 48840.50 -769.2 4603.1 5.3 3.9
AUG 7 48841.50 -767.7 4618.0 5.8 4.3
AUG 11 48845.50 -696.0 4719.2 5.9 4.7
AUG 12 48846.50 -670.0 4730.1 4.5 3.9
AUG 13 48847.50 -623.5 4771.9 5.2 3.8
AUG 14 48848.50 -614.1 4769.1 5.2 3.8
AUG 18 48852.50 -510.3 4843.2 5.8 4.1
AUG 19 48853.50 -475.1 4880.1 5.2 3.9
AUG 20 48854.50 -465.5 4866.6 4.6 2.8
AUG 21 48855.50 -411.8 4890.5 4.8 3.0
AUG 25 48859.50 -331.0 4938.1 6.7 4.3
AUG 26 48860.50 -267.3 4941.2 6.4 3.9
AUG 27 48861.50 -260.3 4969.0 5.6 3.3
AUG 28 48862.50 -216.0 4965.0 4.7 3.0
AUG 29 48863.50 -186.2 4997.0 4.5 2.9
AUG 30 48864.50 -159.4 5005.1 4.7 2.9
AUG 31 48865.50 -141.1 5029.8 5.7 3.3
SEP 1 48866.50 -121.2 5036.7 4.8 3.1
SEP 2 48867.50 -114.8 5032.0 4.9 3.2
SEP 3 48868.50 -72.7 5035.4 4.8 3.0
SEP 4 48869.50 -38.6 5024.3 8.4 6.8
2 -d - EOP(ESOC) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
A recent description of this analysis can be found in IGSMail 101.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 30 48864.50 -141.3 4997.7 30.0 2.2 2.1
AUG 31 48865.50 -123.7 5011.0 30.0 1.9 2.2
SEP 1 48866.50 -112.7 5011.4 30.0 2.4 2.1
SEP 2 48867.50 -74.6 5017.8 30.0 2.4 2.7
SEP 3 48868.50 -59.7 5002.7 30.0 2.3 2.3
SEP 4 48869.50 -35.3 5016.7 30.0 1.8 1.9
SEP 5 48870.50 -30.7 5027.0 30.0 2.1 2.2
SEP 6 48871.50 -3.7 5037.4 30.0 2.0 2.1
SEP 7 48872.50 26.2 5059.3 30.0 2.0 2.5
SEP 8 48873.50 55.3 5063.6 30.0 2.2 2.5
SEP 9 48874.50 86.4 5062.7 30.0 2.3 2.5
SEP 10 48875.50 127.2 5065.4 30.0 2.5 2.4
SEP 11 48876.50 134.8 5077.9 30.0 2.9 3.5
SEP 12 48877.50 156.3 5075.1 30.0 5.5 6.2
2 -e - EOP(GFZ) 92 P 02
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
A recent description of this analysis can be found in IGSMail 101.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 9 48843.50 -707.0 4658.0 12.0 15.0
AUG 10 48844.50 -700.0 4702.0 10.0 14.0
AUG 11 48845.50 -687.0 4728.0 3.0 3.0
AUG 12 48846.50 -657.0 4746.0 4.0 5.0
AUG 13 48847.50 -640.0 4766.0 4.0 5.0
AUG 14 48848.50 -622.0 4778.0 6.0 6.0
AUG 15 48849.50 -590.0 4806.0 8.0 12.0
AUG 17 48851.50 -546.0 4836.0 6.0 7.0
AUG 18 48852.50 -520.0 4853.0 3.0 3.0
AUG 19 48853.50 -486.0 4871.0 3.0 3.0
AUG 20 48854.50 -456.0 4878.0 3.0 3.0
AUG 21 48855.50 -420.0 4899.0 3.0 3.0
AUG 24 48858.50 -333.0 4929.0 7.0 8.0
AUG 25 48859.50 -306.0 4956.0 4.0 4.0
AUG 26 48860.50 -284.0 4959.0 3.0 2.0
AUG 27 48861.50 -245.0 4972.0 4.0 3.0
AUG 28 48862.50 -210.0 4984.0 3.0 3.0
AUG 29 48863.50 -174.0 5008.0 3.0 2.0
2 -f - EOP(JPL) 92 P 02
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
A recent description of this analysis can be found in IGSMail 103.
Date Uncertainties
1992 MJD x y D Passes Span x y D
hours
AUG 24 48858.50 -340.6 4917.5 1.9 2.1
AUG 25 48859.50 -312.0 4928.1 0.8 0.9
AUG 26 48860.50 -280.2 4940.7 0.8 0.9
AUG 27 48861.50 -248.3 4953.5 0.8 0.9
AUG 28 48862.50 -217.2 4967.8 0.8 0.9
AUG 29 48863.50 -186.9 4986.5 0.8 0.9
AUG 30 48864.50 -158.9 5005.2 243.7 0.9 1.0 2.0
AUG 31 48865.50 -136.7 5020.2 228.6 0.8 0.9 2.0
SEP 1 48866.50 -117.1 5031.9 198.3 0.9 1.1 2.0
SEP 2 48867.50 -96.7 5026.1 181.6 0.9 1.1 2.0
SEP 3 48868.50 -70.1 5020.6 148.4 0.7 0.8 1.0
SEP 4 48869.50 -49.1 5018.8 134.2 0.7 0.8 1.0
SEP 5 48870.50 -26.2 5027.8 136.0 0.8 0.9 2.0
SEP 6 48871.50 -3.6 5033.0 172.1 1.5 2.1 7.0
SEP 7 48872.50 23.7 5041.0 147.0 1.5 1.9 7.0
SEP 8 48873.50 50.4 5051.2 169.9 1.7 2.0 7.0
SEP 9 48874.50 75.4 5056.9 178.7 1.6 1.9 7.0
SEP 10 48875.50 102.7 5063.4 202.4 1.6 1.9 7.0
SEP 11 48876.50 117.0 5072.0 197.4 1.6 1.8 7.0
2 -g - EOP(SIO) 92 P 03
Units : 0.0001" for x,y, 0.00001s for UT1 and D.
A recent description of this analysis can be found in IGSMail 101.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y
UT1-UTC
hours
AUG 29 48863.50 -184.9 5001.8 18 1.2 1.3
AUG 30 48864.50 -159.8 5020.1 18 1.4 1.5
AUG 31 48865.50 -128.7 5038.2 18 1.3 1.4
SEP 1 48866.50 -108.7 5047.2 18 1.3 1.3
SEP 2 48867.50 -88.5 5043.8 18 1.2 1.3
SEP 3 48868.50 -63.4 5041.9 18 1.7 2.0
SEP 4 48869.50 -40.6 5036.4 18 1.3 1.4
SEP 5 48870.50 -22.0 5032.6 18 1.7 1.8
SEP 6 48871.50 4.9 5050.1 18 1.6 1.6
SEP 7 48872.50 29.7 5063.2 18 1.3 1.3
SEP 8 48873.50 52.8 5067.5 18 1.3 1.4
SEP 9 48874.50 79.1 5075.7 18 1.3 1.4
SEP 10 48875.50 101.7 5073.1 18 1.4 1.5
SEP 11 48876.50 120.1 5080.8 18 1.9 1.7
==============================================================================
^From: J. Kouba
Subject: EMR Analysis Results
--------------------
from: J. Kouba
Subject: Geodetic Survey Division (GSD), SMRSS, EMR analysis results
for GPS weeks # 661,662
submitted by:
J. Kouba * , P. Tetreault, R. Ferland, F. Lahaye, M. Caissy, P. Heroux
Geodetic Survey Division (GSD), Surveys Mapping & Remote Sensing Sector
(SMRS), Energy Mines and Resources (EMR), 615 Booth Str., Ottawa, K1A 0E3
* on secondment to the Geodetic Survey from the Geophysics Div., Geological
Survey of Canada (GSC), EMR, 1 Observatory cresc., Ottawa, K1A 0Y3
Our analysis utilizes the JPL GIPSY/OASIS II (UNIX) software system
and data from all (up to 7) Canadian stations augmented by up to 10, globally
distributed, core stations (see Table 1 for the list of stations).
Submitted results start with GPS Week # 661 and include only days when
AS was not invoked. This effort is a part of a joint pilot project to test the
so called "Active Control System" in Canada and involves the Geodetic
Survey (GSD), SMRSS, the Geophysics Division and Pacific Geoscience Centre of
the Geological Survey of Canada, all three institutions are part of the
Department of Energy, Mines & Resources (EMR).
Table 1 : Station Summary (also indicated are day no. for which a
particular station is not included in the daily solution, either due to being
down or data being late)
station IGS code missing day no. of 1992
Albert Head, CAN ALBH
Algonquin, CAN ALGO 259
Fairbanks FAIR
Goldstone GOLD 254
Hartebeesthoek HART 262
Kokee Park KOKB 259 -> 262
Madrid MADR
Penticton, CAN DRAO
Prince Albert, CAN PRAL
Santiago SANT
St. Johns, CAN STJO
Canbera CANB
Tromsoe TROM 259, 260, 261
Wettzell WETT
Yarragadee YAR1
Yellowknife, CAN YELL
SOLUTION CHARACTERISTICS
Reference frame and orientation
Nominally ITRF91 at epoch 1992.5, realized by constraining the
following stations at the IGS coordinates (see IGS message #90):
Table 2: Constrained stations
Station code L1p.c. X(m) Y(m) Z(m) apriori sigmas
Algonquin ALGO .192m 918129.616 -4346071.224 4561977.800 .002 .002 .002
Fairbanks FAIR .194 -2281621.327 -1453595.775 5756961.976 .02 .02 .02
Tromsoe TROM 2.551 2102940.451 721569.379 5958192.072 .02 .02 .02
Wettzell WETT .078 4075578.683 931852.634 4801569.980 .02 .02 .02
Yarragadee YAR1 .151 -2389025.331 5043316.830-3078530.926 .02 .02 .02
The remaining stations are considered unknown (with 50 m apriori sigmas).
Orientation is realized through the above coordinates and the fixed DUT1
values from IERS (Bull. B).
Constants and models
- no change, see the IGS mess. #101 for details -
Estimation strategies
- no change, see the IGS mess. #101 for details -
Since ALGO was down on Sep 15 and part of Sep. 16 the FAIR clock was used
as a reference. (note on Sep 16 a part of data is also missing at FAIR)
Table 3: Summary of estimated parameters and apriori weighting
(P3 and L3 undifferenced smoothed pseudorange and phase sigmas of 0.5m and
.005m were used)
parameter model apriori weighting (sigmas)
station X,Y,Z unknown parameters 50m (fixed stations .002-.02m)
pole x,y " " 3m; (DUT1 fixed)
trop. zen. delay " " 0.2m
trop. bias random walk .01m/sqrt(1hour)
satellite states unknown parameters 1km; .005m/s
rad. press Gx,Gz " " 50%
rad. press Gy " " 1.4 10e-9 m/s^2
initial real cy amb. " " 300000km
station clocks white noise 1s
satellite clocks " " 1ms and .1ms for Block I and II,resp.
Aposterioi variance factors typically are between 0.5 and 1.0. Due to
problems with data quality for the AS days the results for the corresponding
days (with AS turned on) are not included here.
SUMMARY OF CANADIAN EMR SOLUTION
1. Analysis centre : Geodetic Survey Division (GSD), SMRSS , EMR
2. Solution identifier: Submission 920923
3. Software used : GIPSY/OASIS II (UNIX )
4. Definition of Terrestrial frame:
origin : Nominally ITRF91
orientation : " "
reference epoch : 1992.5
velocity of light : 299792458 m/s
GM : 389600.4414 km^3/s^5
gravity model : GEMT3( 8,8) +C21+S21
permanent tide corr: None
ocean loading : Pagiatakis, global model
5. Adjusted parameters:
undifferenced phase and smoothed pseudorange data
single day (24h) arc with 6 IC and 3 rad. parameters per satellite (18
satellites)
tropospheric zenith delay corr. parameter augmented with random walk stoch.
process
initial phase ambiguity parameters (one for each satellite station pass or
initial phase)
station positions X,Y,Z, up to 17 stations, ALGO constrained at 2mm, FAIR,
TROM, WETT and YAR1 at 2cm sigmas.
x and y pole position once a day (DUT1 fixed; x,y apriori sigma=3m)
sigma 1 s
satellite clock biases once per each epoch/satellite with 1ms or .1ms sigma
Pole solution for non AS days
MJD date x(") y(") DUT1(s) xsig ysig utsig xyc
48870.5 9/05/92 AS on
48871.5 9/06/92 AS on
48872.5 9/07/92 .00129 .50643 .33514 .00046 .00028 0 0
48873.5 9/08/92 .00297 .50600 .33324 .00049 .00031 0 0
48874.5 9/09/92 .00507 .50771 .33135 .00046 .00028 0 0
48875.5 9/10/92 .00730 .50762 .32941 .00047 .00029 0 0
48876.5 9/11/92 .01077 .50885 .32748 .00047 .00029 0 0
48877.5 9/12/92 AS on
48878.5 9/13/92 AS on
48879.5 9/14/92 AS on
48880.5 9/15/92 .02010 .50935 .31969 .00061 .00063 0 0
48881.5 9/16/92 .02220 .50924 .31772 .00065 .00044 0 0
48882.5 9/17/92 .02511 .50949 .31574 .00057 .00035 0 0
48883.5 9/18/92 .02775 .50862 .31376 .00066 .00045 0 0
48884.5 9/19/92 AS on
Products generated:
The following products were generated and uploaded to CDDIS @ NASA/GSFC
EMR06617.EPH precise GPS ephemeris for week # 661 in sp3 NGS format
EMR06627.EPH precise GPS ephemeris for week # 662 in sp3 NGS format
EMR06627.ERP pole x y solutions for weeks# 661-662
EMR06627.SUM name of this text file
remarks on EMR's products:
1. only days with no AS were included
2. satellite clock solutions in sp3 EPH files are w.r.t. hydrogen maser at ALGO,
epochs with no reference (e.g. ALGO not observing a satellite) have a value
of 99999. microseconds. For the week #662 FAIR hydrogen maser was used as a
reference clock as ALGO was down on Sep 15, part of Sep 16.Also note that the
FAIR clock error was about 5.8 micros. during this period and a part of the
Sep 16 data at FAIR is missing as well.
3. ephemeris refers to the mass centre of SV's
--
Mark Caissy
Geodetic Survey of Canada
mark at sun470.geod.emr.ca
More information about the IGSMail
mailing list