[IGSMAIL-81] Request for list of FIDUCIAL stations
Peter
Peter
Mon Aug 31 17:06:32 PDT 1992
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IGS Electronic Mail 31-AUG-1992 17:06:32 Message Number 81
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THIS FILE CONTAINS 7 MESSAGES
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>From: Peter Morgan
Subject: Request for list of FIDUCIAL stations
-------------------------------------
Could I please have forwarded to me, a list of all stations
participating in the EPOCH'92 Campaign component.
I prefer to have the following information:
1. Station Name
2. Country
3 4 character abreviation if appropriate
4 A-priori coordinates (please tell me what system)
5 Data Center where data will be lodged
Other information such as dates of observation, instrument type etc are
most welcome.
Regards peter
peterm at ise.canberra.edu.au
==============================================================================
>From: Carey Noll
Subject: CDDIS GPS Data Holdings for IGS Week 10/GPS Week 658
--------------------------------------------------------------
Current IGS GPS Data Holdings (as of 27-Aug-92 07:08)
IGS Week 10/GPS Week 658 (August 16 thru 22, 1992; Days 229 thru 235)
2 2 2 2 2 2 2
Mon. 2 3 3 3 3 3 3 No.
Site Name Name Receiver 9 0 1 2 3 4 5 Sites
------------------ ---- -------- --- --- --- --- --- --- --- -----
Albert Head ALBH Rogue X X X X X X X 7
Algonquin ALGO Rogue X X X X X X X 7
Fairbanks FAIR Rogue X X X X X X X 7
Goldstone GOLD Rogue X X X X X - X 6
Graz GRAZ Rogue X X X X X X X 7
Graz GRAA Ashtech - X X X X X X 6
Hartebeesthoek HART Rogue X X X X X X X 7
Herstmonceux HERS Rogue - X X X X X X 6
Hobart HOBA Minimac X X X X X X X 7
Kokee Park KOKB Rogue X X X X X X X 7
Kootwijk KOSG Rogue X X X X X X X 7
Kourou KOUR Rogue X X X - - - - 3
Madrid MADR Rogue X X X X X X X 7
Maspalomas MASP Rogue X X X X X X X 7
Matera MATE Rogue X X X X X X X 7
McMurdo MCMU Rogue X X X X X X X 7
Metsahovi METS Rogue X X X X X X X 7
Mojave MOJ1 Minimac X X X X X X X 7
Ny Alesund NYAL Rogue X X X X X X X 7
Onsala ONSA Rogue X X X X X X X 7
Pamate PAMA Rogue X X X X X X X 7
Pasadena JPLM Rogue X X X X X X X 7
Penticton DRAO Rogue X X X X X X X 7
Pinyon Flat PINY Rogue X X X X - - - 4
Richmond RCM2 Rogue X X X - - X X 5
Saint John's STJO Rogue X X X X X X X 7
Santiago SANT Rogue - X X X X X X 6
Taiwan TAIW Rogue X X X X X X X 7
Tidbinbilla TIDB Rogue X X X X X X X 7
Townsville TOWN Trimble X X X X* X* X* X* 7
Tromso TROM Rogue X X X X X X X 7
Tsukuba TSUK Minimac X X X - - - - 3
Usuda USUD Rogue X X X X X X X 7
Victoria PGC1 Rogue - - - - - X - 1
Wellington WELL Trimble X X X X* X* X* X* 7
Westford WES1 Minimac X X X X X X X 7
Wettzell WETT Rogue X X X X X X - 6
Yaragadee YAR1 Rogue X X X X X X X 7
Yellowknife YELL Rogue X X X X X X X 7
Zimmerwald ZIMM Trimble X X X X X X X 7
Zimmerwald ZIMA Ashtech X X X X - - - 4
------------------ ---- -------- --- --- --- --- --- --- --- -----
Totals: 41 stations 37 40 40 37 35 36 35 260
Notes: CDDIS disk archive status:
GPS1:[GPSDATA] directory contains days 206 thru 223
GPS2:[GPSDATA] directory contains days 224 and on
GPS3:[PRODUCTS] directory contains IGS products from GPS week 0649
* denotes data replaced by CIGNET on August 26, 1992
CDDIS has begun to retrieve data from the IGN for some European
stations.
==============================================================================
>From: James F. Zumberge
Subject: JPL orbit products
------------------
We omitted from our original description (IGS Mail Message 37) that JPL's orbit
product, like the broadcast ephemeris, refers to the coordinates of the
spacecraft's antenna phase center, not its center of mass.
This decision was based on our feeling that the majority of users would
use the information as a replacement to the broadcast ephemeris, in which
case referring to center-of-mass coordinates would be inappropriate.
Although the information which follows is not necessary for such users, for
completeness we provide here our assumptions about the vector from
the spacecraft center of mass to the antenna phase center.
(1) No distinction is made among L1, L2, and LC. According to our contact with
the Aerospace Corporation, the phase centers have not been well enough
measured to make such a distinction.
(2) The coordinate system in the table below has Z pointing from the
satellite's center of mass to the Earth's center of mass, Y as the cross
product of Z with the vector from satellite to sun, and X completes a
right-handed system (X cross Y = Z).
Vector from Center of Mass to Antenna Phase Center
X (m) Y (m) Z (m)
Block I satellites 0.21 0.0 0.854
Block II satellites 0.279 0.0 0.9519
The figures are believed accurate to +/- a few centimeters.
(3) When the Earth, sun, and spacecraft are in alignment, the X and Y
components of the above coordinate system are ill-defined. Therefore, if
the satellite-sun and satellite-Earth directions are within 3 degrees of
being collinear, only the radial (Z) component above is used.
==============================================================================
>From: Bob E. Schutz
Subject: GPS week 657 solution
---------------------
Earth Orientation Results Submitted to IERS
EARTH ROTATION PARAMETERS
ANALYSIS CENTER: UNIVERSITY OF TEXAS CENTER FOR SPACE RESEARCH
DATA: GPS
SOLUTION IDENTIFIER: EOP(CSR) 92 P 01
SUBMISSION DATE: 28 AUGUST 1992
Notes:
1. RMS is in cm
2. The following satellites were included (by PRN): 2,3,11,12,13,14,15,16,17,18,19,20,21,23,24,25,26,28
3. AS was "on" during Day 222, 223, 228. These days are not included in the solution.
MJD x y UT1 sx sy sUT1 RMS cxy cxUT1 cyUT1 Sta Sat Passes
48845.5 -0.06903 0.47492 0.000000 0.00014 0.00016 0.000000 2.14 -0.071 0.000 0.000 24 18 497
48846.5 -0.06699 0.47635 0.000000 0.00015 0.00020 0.000000 2.02 -0.011 0.000 0.000 23 18 468
48847.5 -0.06458 0.47941 0.000000 0.00013 0.00016 0.000000 2.07 -0.130 0.000 0.000 24 18 514
48848.5 -0.06240 0.47881 0.000000 0.00014 0.00014 0.000000 2.30 0.100 0.000 0.000 24 18 505
==============================================================================
>From: Ruth E. Neilan
Subject: AS and the Tracking Network
---------------------------
Tracking Network Performance and the effects of AS
Ref. IGS Mail Messages 69,73 & 75
There is legitimate concern over the loss of quality data
for the tracking network during the implementation of
AS (Anti-spoofing). AS has been consistently activated
on the Block II and IIa satellites over the weekends since
the beginning of August. The ultimate impact is that
during the Epoch'92 campaign when 80 to 100 or more
codeless GPS receivers were deployed for the
densification of the global network and the robustness of
the tracking network is lost for these time periods.
It is therefore important to summarize the status of the
activities assessing the impact of AS on the operational
IGS precision p-code (Rogue) tracking network:
1) This is not an inherent problem in the tracking loop
software of the Rogue receivers. Conversations with the
Rogue development team indicate that the codeless data
quality (rms) is sub-centimeter and consistent with
codeless data produced by the other codeless receiver
types. Questions concerning this can be directed to Tom
Meehan at JPL.
2) Two problems exist with the receiver software which
are in the process of being fixed, However, it is helpful
to understand a bit about the architecture of the
software. The standard receiver software (Meenix) is
present in all Rogue receivers. It is enhanced at most
locations through the CONAN software, which permits
very efficient storage and uploading of the GPS data.
There are two type of stations:
3 Deep Space Net stations that have continuous,
dedicated communication lines for data transmission and
operate under Meenix only; .
30 additional stations worldwide which depend on CONAN
for periodic receiver access and data retrieval, at a
great reduction in communication costs .
The problems:
Meenix at the DSN does not record the Broadcast
ephemeris correctly.
Meenix does however, handle AS correctly with the latest
upgrade of the software. Unfortunately this version of
software was still in soak in late July at the DSN, but
the data from the 3 DSN sites over the last weekend
should provide the processing centers analysts with a
Rogue codeless dataset. The DSN stations are Canberra,
Madrid and Goldstone.
The other 30 stations also operate this new version of
Meenix and are quite capable of producing the proper AS
data -- with the bypass of the CONAN efficiency. As
mentioned in U. Lindqwister's message included in IGS
Mail 75, one can upload the data more frequently and
retrieve the MEENIX output.
Future problems can be better handled if we have
increased communication among the processing centers
and the Network Operations Group at JPL. All messages
should be sent to:
UJL at roguenet.jpl.nasa.gov
with attention to Ulf Lindqwister who is responsible for
network engineering.
Whenever a data problem with receivers is encountered
it would be helpful to be more specific and to
immediately bring this to the attention of ALL
processing centers and the Central Bureau (i.e.: this
problem was discovered on day __, at these stations __,
evident on these satellite(s) __ , for the time period __).
ALL processing centers, please comment on the data files
from the 3 DSN sites for the past weekend. Feedback is
important.
A schedule for upgrade of the additional 30 receivers
which are operating with CONAN is being developed. If
any other problems are evident it would be best to try to
incorporate them in the next upgrade. In the interim, if
there are periods of time when the AS codeless is
desired from some stations, follow the directions given
in IGS message 75 or contact U. Lindqwister or myself.
Operationally this type of data upload is rather
cumbersome and time consuming, but perhaps it would be
very worthwhile for a few globally distributed. stations.
Sincerely,
Ruth Neilan
Central Bureau of the IGS
==============================================================================
>From: Yehuda Bock
Subject: SIO PGGA/GARNER Analysis Center Results (28 August, 1992)
---------------------------------------------------------
Yehuda Bock, Peng Fang and Keith Stark
This week we include the following information:
(1) Note on SA tests
(2) Polar motion results for 15-19 August
Note: We have a problem with the solutions for 20 and 21 August which
we are currently investigating. We will include these days in our
next report.
(1) Note on SA tests
Our solutions during AS periods do not include data from
the affected satellites (i.e., PRN's 2,16,17,20,21,23,24,25,26,28).
The consequences at this stage:
(a) Our orbital products do not include improvements to these satellites
during the AS period.
(b) Polar motion values for the AS period have larger uncertainties.
(2) Polar motion results.
The set of coordinates described below is based on the
analysis of the of the first 58 days of the IGS campaign, and
include coordinates of the PGGA sites after the Landers earthquake.
The polar motion table has been updated for the period 15-19 August.
1. Analysis Center: Scripps Institute of Oceanography
2. Solution Identifier: Submission 920828
3. Software used: GAMIT/GLOBK
4. Definition of Terrestrial Reference Frame:
Origin: Nominally ITRF-90
Orientation: Nominally ITRF-90
Reference epoch: 1992.57 (MJD 48829.5)
Relativity Scale: Terrestrial
Velocity of light: 299792458.0 m/sec
Permanent tidal correction: None
5. Adjusted parameters:
(a) Double-difference data
(b) Single day orbit arcs, 6 ICs and 3 radiation parameters per
satellite-per-day
(c) One-per-day-per-station zenith tropospheric parameter,
(d) Bias parameters, one for each independent double difference
combination.
(e) Station positions with +- 10 m constraints at stations other
than: ALGO, YELL, PIN1, PINB, JPL1, JPLB, SIO1, SIO2, FAIR, KOKR,
USUD, DS10, DS1B, DS40, DS41, DS60, YAR1, MCMU, TAIW, ONSA, WTZ1,
METS, MATE, TROM, NALL, KOSG. For these stations constraints of
+0.001 m for horiziontal and +-0.005 m for the height were u
(f) X and Y pole position once per day. (No estimate is made of UT1-
AT since these deviations are absorbed into the orbital parameters).
(g) On MJD 48800.5, the California sites are treated as separate
sites before and after the Landers earthquake.
6. Station coordinates used.
DOMES # Name X Y Z Epoch Dur +- X +- Y +- Z Vx Vy Vz
(m) (m) (m) MJD days (m) (m) (m) (m/yr) (m/yr) (m/yr)
X10302M003 Tromsoe 2102940.447 721569.360 5958192.092 48829.5 51.0 0.002 0.002 0.003 -0.0186 0.0110 0.0052
X10317M001 NALL 1202431.371 252626.765 6237770.782 48829.5 49.0 0.002 0.002 0.003 -0.0178 0.0083 0.0031
X10402M004 ONSA 3370658.746 711876.997 5349786.805 48829.5 50.0 0.002 0.002 0.003 -0.0168 0.0147 0.0086
X10503S011 METS 2892571.016 1311843.303 5512634.005 48829.5 36.0 0.002 0.002 0.003 -0.0192 0.0132 0.0070
X11001M002 Graz 4194424.048 1162702.525 4647245.239 48829.5 12.0 0.003 0.002 0.003 -0.0164 0.0168 0.0106
X12734M008 MATE new 4641949.803 1393045.257 4133287.221 48829.5 49.0 0.002 0.002 0.003 -0.0157 0.0179 0.0117
X13212M007 Herstmon 4033470.295 23672.714 4924301.128 48829.5 46.0 0.005 0.003 0.005 -0.0135 0.0165 0.0110
X13407S012 Madrid 4849202.507 -360329.166 4114912.958 48829.5 40.0 0.003 0.002 0.003 -0.0101 0.0185 0.0135
X13504M003 Kootwijk 3899225.329 396731.773 5015078.266 48829.5 43.0 0.002 0.002 0.003 -0.0150 0.0161 0.0104
X14201S020 Wettzell 4075578.658 931852.651 4801569.960 48829.5 48.0 0.002 0.002 0.003 -0.0161 0.0165 0.0105
X21729S003 Usuda -3855262.632 3427432.244 3741020.958 48829.5 27.0 0.004 0.004 0.005 -0.0212 -0.0097 -0.0130
X23601M001 Taipei -3024781.855 4928936.973 2681234.516 48829.5 46.0 0.005 0.005 0.005 -0.0232 -0.0078 -0.0118
X30302M002 HART 5084625.120 2670366.540 -2768494.199 48829.5 32.0 0.008 0.007 0.004 -0.0013 0.0241 0.0209
X31303M001 MASPollom 5439189.154 -1522054.819 2953464.086 48829.5 26.0 0.003 0.002 0.003 -0.0040 0.0185 0.0169
X40101M001 St. John 2612631.381 -3426807.002 4686757.711 48829.5 17.0 0.003 0.002 0.003 -0.0195 -0.0033 0.0084
X40104M002 ALGO 918129.627 -4346071.211 4561977.762 48829.5 49.0 0.002 0.002 0.002 -0.0193 -0.0029 0.0012
X40105M002 Penticon -2059164.597 -3621108.342 4814432.369 48829.5 51.0 0.002 0.002 0.002 -0.0201 -0.0023 -0.0103
X40127M003 YELL -1224452.373 -2689216.062 5633638.275 48829.5 51.0 0.002 0.002 0.002 -0.0231 -0.0029 -0.0064
X40400M006 JPL1 -2493304.076 -4655215.507 3565497.271 48829.5 23.0 0.002 0.003 0.003 -0.0372 0.0153 0.0120
X40400M007 JPL1 PEQ -2493304.072 -4655215.483 3565497.259 48829.5 28.0 0.002 0.003 0.003 -0.0372 0.0153 0.0120
X40405S028 Golstone -2353614.088 -4641385.363 3676976.416 48829.5 22.0 0.002 0.003 0.003 -0.0159 0.0069 -0.0081
X40405S031 Gold PEQ -2353614.092 -4641385.353 3676976.394 48829.5 21.0 0.002 0.003 0.003 -0.0159 0.0069 -0.0081
X40407M002 PIN1 -2369510.404 -4761207.161 3511396.023 48829.5 23.0 0.002 0.003 0.002 -0.0224 0.0218 -0.0004
X40407M003 PIN1 PEQ -2369510.373 -4761207.140 3511396.054 48829.5 29.0 0.002 0.003 0.002 -0.0224 0.0218 -0.0004
X40408M001 Fairbanks -2281621.313 -1453595.741 5756961.965 48829.5 19.0 0.002 0.002 0.003 -0.0233 -0.0027 -0.0099
X40424M004 Kokee Pk. -5543838.053 -2054587.456 2387809.481 48829.5 43.0 0.003 0.002 0.003 -0.0100 0.0613 0.0294
X40460M002 SIO2 -2455539.248 -4767224.071 3441628.810 48829.5 17.0 0.002 0.004 0.003 -0.0335 0.0302 0.0180
X40460M003 SIO2 PEQ -2455539.226 -4767224.054 3441628.808 48829.5 21.0 0.002 0.003 0.003 -0.0335 0.0302 0.0180
X40460M001 SIO1 -2455521.697 -4767213.379 3441654.850 48829.5 12.0 0.004 0.003 0.003 -0.0335 0.0302 0.0180
X41705M003 SANT 1769692.988 -5044573.802 -3468321.387 48829.5 48.0 0.006 0.007 0.004 0.0013 -0.0044 0.0071
X50103S017 CANB(DS42)-4460996.139 2682557.264 -3674444.110 48829.5 39.0 0.006 0.006 0.005 -0.0363 0.0023 0.0458
X50107M004 Yarragad. -2389025.452 5043316.874 -3078531.064 48829.5 46.0 0.006 0.006 0.005 -0.0485 0.0107 0.0552
X66001S005 Mc Murdo -1310696.393 310469.318 -6213368.515 48829.5 43.0 0.007 0.007 0.005 0.0091 -0.0107 -0.0024
X92201M003 Pamatai -5245195.149 -3080472.127 -1912825.677 48829.5 20.0 0.006 0.006 0.004 -0.0416 0.0527 0.0293
X50134M001 Darwin -4091358.542 4684606.625 -1408580.749 48829.5 11.0 0.007 0.006 0.005 -0.0376 -0.0146 0.0609
X40420M006 VNDP -2678089.800 -4525437.755 3597431.423 48829.5 15.0 0.002 0.003 0.003 -0.0302 0.0327 0.0187
NOTES:
(a) The epoch refers to the epoch at which the site position applies
and not the mid-point of the data span. We have also added the
velocities adopted for these sites at the end of each line. For most sites
these are the NUVEL-1 velocities with the North American AM0-2 velocity
added. For PIN1 and DS10, Observed velocities (based on a combined VLBI/
GPS solution using ~10 years of data have been used).
(b) The PEQ notation in the site name (PINB, DS1B, SIOC and JPLB) denotes
post-Landers earthquake position (applicable after 11:58 UTC June 28, 1992).
(c) These coordinates were estimated from the first 51 days of IGS data.
They have been rotated and translated into the ITRF 1990 frame by use
of the horizontal coordinates at all sites. The rms difference between
the horizontal coordinates of these sites and our previous realization
(second IERS submission) was 5 mm.
6. Solution 920828
* MIT_TO_IERS: Run on 1992/ 8/27 22:44
* Input file : pmu082792.mit
48780.5 -0.15613 0.32205 -0.519883 0.00021 0.00021 0.000000 1.96 0.109 0.000 0.000 21 16 0
48781.5 -0.15372 0.32385 -0.522617 0.00027 0.00025 0.000000 1.46 0.046 0.000 0.000 21 17 0
48782.5 -0.15455 0.32543 -0.525143 0.00026 0.00023 0.000000 1.29 0.117 0.000 0.000 21 17 0
48783.5 -0.15467 0.32866 -0.527309 0.00020 0.00020 0.000000 1.81 -0.010 0.000 0.000 21 17 0
48784.5 -0.15518 0.33080 -0.529055 0.00027 0.00024 0.000000 1.41 0.080 0.000 0.000 22 17 0
48785.5 -0.15367 0.33296 -0.530225 0.00023 0.00022 0.000000 1.43 0.000 0.000 0.000 22 17 0
48786.5 -0.15379 0.33598 -0.531264 0.00023 0.00022 0.000000 1.71 -0.024 0.000 0.000 21 17 0
48787.5 -0.15227 0.33915 -0.532088 0.00037 0.00033 0.000000 1.61 -0.062 0.000 0.000 17 17 0
48788.5 -0.15204 0.34224 -0.532830 0.00020 0.00022 0.000000 1.49 -0.011 0.000 0.000 21 17 0
48789.5 -0.15227 0.34537 -0.533614 0.00024 0.00025 0.000000 1.36 -0.040 0.000 0.000 20 17 0
48790.5 -0.15178 0.34806 -0.534539 0.00025 0.00025 0.000000 1.74 -0.044 0.000 0.000 21 17 0
48791.5 -0.15268 0.35123 -0.535654 0.00023 0.00024 0.000000 1.81 0.109 0.000 0.000 20 17 0
48792.5 -0.15185 0.35393 -0.536981 0.00020 0.00019 0.000000 2.28 0.060 0.000 0.000 20 17 0
48793.5 -0.15265 0.35656 -0.539967 0.00018 0.00019 0.000000 1.59 0.011 0.000 0.000 20 17 0
48794.5 -0.15107 0.35867 -0.541918 0.00021 0.00021 0.000000 1.37 0.000 0.000 0.000 23 17 0
48795.5 -0.15069 0.36003 -0.543939 0.00019 0.00020 0.000000 1.93 0.023 0.000 0.000 24 17 0
48796.5 -0.15002 0.36293 -0.545936 0.00017 0.00018 0.000000 1.61 0.099 0.000 0.000 24 17 0
48797.5 -0.14923 0.36463 -0.547805 0.00020 0.00023 0.000000 1.90 0.062 0.000 0.000 23 17 0
48798.5 -0.14700 0.36705 -0.549454 0.00026 0.00025 0.000000 1.40 0.121 0.000 0.000 21 17 0
48799.5 -0.14700 0.37016 -0.551219 0.00027 0.00028 0.000000 1.34 0.146 0.000 0.000 21 17 0
48800.5 -0.14457 0.37288 -0.552509 0.00024 0.00024 0.000000 1.34 0.085 0.000 0.000 22 17 0
48801.5 -0.14404 0.37427 -0.553393 0.00027 0.00028 0.000000 1.18 0.161 0.000 0.000 26 17 0
48802.5 -0.14297 0.37794 -0.554140 0.00024 0.00027 0.000000 1.40 0.158 0.000 0.000 22 17 0
48803.5 -0.14154 0.38093 -0.555153 0.00020 0.00025 0.000000 1.89 0.119 0.000 0.000 21 17 0
48804.5 -0.14111 0.38215 0.443530 0.00016 0.00017 0.000000 2.22 0.129 0.000 0.000 23 17 0
48805.5 -0.13907 0.38531 0.441782 0.00018 0.00021 0.000000 1.98 0.083 0.000 0.000 22 17 0
48806.5 -0.13790 0.38707 0.439604 0.00020 0.00023 0.000000 1.53 0.133 0.000 0.000 22 17 0
48807.5 -0.13686 0.39027 0.437134 0.00021 0.00024 0.000000 1.76 0.096 0.000 0.000 23 16 0
48808.5 -0.13477 0.39214 0.434606 0.00018 0.00020 0.000000 1.80 0.038 0.000 0.000 24 16 0
48809.5 -0.13430 0.39393 0.432253 0.00015 0.00017 0.000000 1.30 0.135 0.000 0.000 26 16 0
48810.5 -0.13189 0.39617 0.430247 0.00017 0.00018 0.000000 1.44 0.057 0.000 0.000 27 16 0
48811.5 -0.13039 0.39882 0.428660 0.00014 0.00016 0.000000 1.52 0.095 0.000 0.000 27 17 0
48812.5 -0.12982 0.39996 0.427483 0.00015 0.00018 0.000000 1.84 0.142 0.000 0.000 26 17 0
48813.5 -0.12806 0.40230 0.427699 0.00021 0.00025 0.000000 2.91 0.277 0.000 0.000 26 16 0
48814.5 -0.12640 0.40553 0.427271 0.00014 0.00016 0.000000 1.48 0.192 0.000 0.000 28 17 0
48815.5 -0.12614 0.40898 0.426947 0.00015 0.00020 0.000000 1.57 0.185 0.000 0.000 27 17 0
48816.5 -0.12504 0.41105 0.426598 0.00014 0.00016 0.000000 1.89 0.164 0.000 0.000 29 17 0
48817.5 -0.12520 0.41152 0.426111 0.00017 0.00020 0.000000 1.81 0.162 0.000 0.000 28 17 0
48818.5 -0.12414 0.41383 0.425416 0.00016 0.00017 0.000000 1.74 0.106 0.000 0.000 27 17 0
48819.5 -0.12285 0.41555 0.424472 0.00017 0.00019 0.000000 1.88 0.113 0.000 0.000 25 17 0
48820.5 -0.12000 0.41761 0.423296 0.00020 0.00020 0.000000 1.88 0.166 0.000 0.000 24 17 0
48821.5 -0.11824 0.41878 0.421397 0.00027 0.00028 0.000000 1.96 0.159 0.000 0.000 23 17 0
48822.5 -0.11542 0.42145 0.419817 0.00021 0.00020 0.000000 1.95 0.137 0.000 0.000 25 17 0
48823.5 -0.11306 0.42399 0.418199 0.00024 0.00025 0.000000 2.10 0.073 0.000 0.000 24 17 0
48824.5 -0.10958 0.42682 0.416635 0.00017 0.00019 0.000000 1.95 0.100 0.000 0.000 25 18 0
48826.5 -0.10646 0.43135 0.414004 0.00013 0.00014 0.000000 1.89 0.062 0.000 0.000 29 18 0
48827.5 -0.10441 0.43306 0.413023 0.00014 0.00014 0.000000 1.75 0.082 0.000 0.000 27 18 0
48828.5 -0.10140 0.43504 0.411183 0.00016 0.00017 0.000000 1.73 0.019 0.000 0.000 25 18 0
48829.5 -0.09985 0.43682 0.410301 0.00016 0.00017 0.000000 1.46 0.045 0.000 0.000 25 18 0
48830.5 -0.09737 0.43913 0.409336 0.00013 0.00014 0.000000 2.02 0.014 0.000 0.000 26 18 0
48831.5 -0.09565 0.44142 0.408090 0.00014 0.00015 0.000000 2.03 0.026 0.000 0.000 27 18 0
48832.5 -0.09406 0.44288 0.406405 0.00016 0.00018 0.000000 2.70 0.119 0.000 0.000 26 18 0
48833.5 -0.09254 0.44531 0.404186 0.00018 0.00016 0.000000 1.94 0.215 0.000 0.000 26 18 0
48834.5 -0.08947 0.44698 0.401566 0.00012 0.00013 0.000000 2.10 0.074 0.000 0.000 27 18 0
48835.5 -0.08915 0.44907 0.398750 0.00046 0.00051 0.000000 1.71 0.179 0.000 0.000 27 18 0
48836.5 -0.08731 0.45118 0.396020 0.00039 0.00053 0.000000 1.49 0.066 0.000 0.000 27 10 0
48837.5 -0.08407 0.45239 0.393620 0.00021 0.00025 0.000000 1.68 -0.011 0.000 0.000 29 18 0
48838.5 -0.08178 0.45588 0.391677 0.00012 0.00012 0.000000 1.59 0.065 0.000 0.000 28 18 0
48839.5 -0.08006 0.45774 0.390212 0.00012 0.00013 0.000000 1.80 0.114 0.000 0.000 29 18 0
48840.5 -0.07784 0.45927 0.389148 0.00012 0.00012 0.000000 2.08 0.058 0.000 0.000 29 18 0
48841.5 -0.07614 0.46140 0.388356 0.00013 0.00014 0.000000 2.04 0.061 0.000 0.000 27 18 0
48842.5 -0.07490 0.46395 0.387691 0.00047 0.00046 0.000000 1.31 0.259 0.000 0.000 28 17 0
48843.5 -0.07253 0.46654 0.386999 0.00036 0.00041 0.000000 1.40 0.247 0.000 0.000 26 8 0
48844.5 -0.07071 0.46924 0.386177 0.00032 0.00027 0.000000 1.54 0.179 0.000 0.000 27 18 0
48845.5 -0.06831 0.47233 0.385147 0.00017 0.00021 0.000000 1.75 0.172 0.000 0.000 27 18 0
48846.5 -0.06668 0.47411 0.383853 0.00014 0.00014 0.000000 1.89 0.085 0.000 0.000 27 18 0
48847.5 -0.06460 0.47653 0.382298 0.00013 0.00013 0.000000 2.09 0.059 0.000 0.000 28 18 0
48848.5 -0.06236 0.47802 0.379500 0.00013 0.00013 0.000000 1.69 0.069 0.000 0.000 28 18 0
48849.5 -0.05936 0.47947 0.377556 0.00032 0.00037 0.000000 1.22 0.237 0.000 0.000 28 13 0
48850.5 -0.05897 0.48090 0.375550 0.00039 0.00042 0.000000 1.46 0.336 0.000 0.000 27 8 0
48851.5 -0.05523 0.48289 0.373590 0.00020 0.00022 0.000000 2.33 0.028 0.000 0.000 28 18 0
48852.5 -0.05191 0.48457 0.371746 0.00014 0.00014 0.000000 1.59 0.060 0.000 0.000 27 18 0
48853.5 -0.04896 0.48645 0.370076 0.00013 0.00014 0.000000 1.82 0.017 0.000 0.000 26 18 0
NOTES: UT1 not estimated. Value given is apriori used in analysis. The rms is the square root of chi**2
per degree of freedom in our solution. It nominally should be 1.0. st and sv are numbers of stations
and satellites in solution.
==============================================================================
>From: Joachim Feltens
Subject: esa06587.sum
------------
-------------------------
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 16-22 (days 229-235,GPS week 658)
*******************************************************************************
On days 229, 230 and 235 (August 16,17 and 22) there have been anti-spoofing
tests. One test period lasted from day 228 to 230, the other one from day 235
to 237. So for this days our NGS-Format orbit files only contain such satel-
lites, that obviously were not affected by anti-spoofing (see table below).
*******************************************************************************
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| | | | | | | | | | | | | | | | | | |
229|A| - | + | + | + | + | + | A | A | + | + | A | A | A | A | A | A | A |
230|A| - | + | + | + | + | + | A | A | + | + | A | A | A | A | A | A | A |
231|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
232|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
233|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
234|+| + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
235|A| + | + | + | + | + | + | A | A | + | + | A | A | A | A | A | A | A |
"A" means anti-spoofing tests
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).
__________________________________________________________________________
| | | GPS WEEK 658 |
| | | 2 2 2 2 2 2 2 |
| | | 2 3 3 3 3 3 3 |
SITE | COUNTRY |CODE| 9 0 1 2 3 4 5 | REMARKS
--------------------|-------------|----|---------------------|------------
Algonquin | Canada |ALGO| F F F F F F F |
CANB/Tidbinbilla | Australia |TIDB| e e e e e e e |
Penticton | U.S.A. |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 ----- |
Hartebeesthoek | South Africa|HART| F F F F F F F |
Herstmonceux | U.K. |HERS| -- 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| e e e ----------- | 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 F |
McMurdo | Antarctica |MCMU| e e e e e e e |
Metsahovi | Finland |METS| F F F F F F F |
Ny Alesund/Spitzb.| Norway |NYAL| e e e e e e -- |
Onsala | Norway |ONSA| e e --- e e e e |
Pamatai/Tahiti | France |PAMA| e e e e e e e |
Richmond | U.S.A/Florid|RCM2| e e e --------- e | own estim.
Santiago | Chile |SANT| -- F F F F F F |
Tai-Shi | Taiwan |TAIW| e e e e e e e |
Usuda | Japan |USUD| e e e e 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 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:
ESA06580.EPH - Precise GPS orbits for day 229 (August 16)
ESA06581.EPH - Precise GPS orbits for day 230 (August 17)
ESA06582.EPH - Precise GPS orbits for day 231 (August 18)
ESA06583.EPH - Precise GPS orbits for day 232 (August 19)
ESA06584.EPH - Precise GPS orbits for day 233 (August 20)
ESA06585.EPH - Precise GPS orbits for day 234 (August 21)
ESA06586.EPH - Precise GPS orbits for day 235 (August 22)
ESA06587.ERP - Earth rotation results for week beginning 1992 August 16
ESA06587.SUM - The name of this text file
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