[IGSMAIL-38] CDDIS Report to the IGS Central Bureau -- Correction
Carey
Carey
Thu Jul 9 18:28:39 PDT 1992
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IGS Electronic Mail 9-JUL-1992 18:28:39 Message Number 38
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THIS FILE CONTAINS 3 MESSAGES
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>From: Carey Noll
Subject: CDDIS Report to the IGS Central Bureau -- Correction
----------------------------------------------------
Here is my first report to the IGS Oversight Committee; I hope it is not
too lengthy! I have given a weekly summary by site for the first three weeks
of the campaign as well as some general information about our archiving and
data distribution efforts. Also included her is a list of problem areas that
have arisen during the first three weeks of the campaign. Although the list
looks lengthy, I don't want you to think it implies that we are having
difficulties or are complaining a great deal! All in all, I believe we have
been doing a pretty good job at keeping up with things as have the data
suppliers.
***** Status Reports:
Below are three weekly status reports. The last week is incomplete at
CDDIS, but it gives you an indication of how the data arrives here.
Current IGS GPS Data Holdings (as of 07-Jul-92)
IGS Week 0 (Jun 14 thru 20, 1992; Days 166 thru 172)
1 1 1 1 1 1 1
Mon. 6 6 6 6 7 7 7 No.
Site Name Name Receiver 6 7 8 9 0 1 2 Sites
------------------ ---- ---------- - - - - - - - -----
Algonquin ALGO ROGUE X X X X X X X 7
Fairbanks FAIR ROGUE X X X X X X 6
Goldstone DS10 ROGUE X X X X X 5
Graz GRAZ ROGUE 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 X 7
Hobart TASM MINIMAC X X X X X X X 7
Kokee Park KOKB ROGUE X X X X X X 6
Kootwijk KOSG ROGUE X 1
Madrid DS60 ROGUE X X X X X 5
Matera MATR ROGUE X X X X X X 6
McMurdo MCMU ROGUE X X X X 4
Metsahovi METS ROGUE X X X X X X 6
Ny Alesund NALL/NYAL ROGUE X X X X X X 6
Onsala ONSA ROGUE X X X X X X 6
Pasadena MESA ROGUE X X X X X X 6
Penticton DRAO ROGUE X X X X X X X 7
Pinyon Flat PINY ROGUE X X X X X X 6
Albert Head ALBH ROGUE X X X X X X X 7
Richmond RICH MINIMAC X X X X X X X 7
Saint John's STJO ROGUE X X X X X X X 7
Santiago SANT ROGUE X X X X X X X 7
Scripps SIO1 ROGUE X X 2
Tahiti PAMA ROGUE X X X X X X X 7
Taiwan TAIW ROGUE X X X X X 5
Tidbinbilla DS40 ROGUE X X X X X 5
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 2
Usuda USUD ROGUE X X X X X X X 7
Victoria PGC1 ROGUE X X X X X X X 7
Wellington WELL TRIMBLE X X X X X X X 7
Wettzell WTZL ROGUE X X X X 4
Yaragadee YAR1 ROGUE X X X X X X 6
Yellowknife YELL ROGUE X X X X X X X 7
Zimmerwald ZIMM TRIMBLE X X X X X X 6
------------------ ---- ---------- -- -- -- -- -- -- -- -----
Totals: 36 stations 27 28 31 34 33 29 29 211
Current IGS GPS Data Holdings (as of 07-Jul-92)
IGS Week 1 (Jun 21 thru 27, 1992; Days 173 thru 179)
1 1 1 1 1 1 1
Mon. 7 7 7 7 7 7 7 No.
Site Name Name Receiver 3 4 5 6 7 8 9 Sites
------------------ ---- ---------- - - - - - - - -----
Algonquin ALGO ROGUE X X X X X X X 7
Fairbanks FAIR ROGUE X X X X X X X 7
Goldstone DS10 ROGUE X X X X X 5
Graz GRAZ ROGUE X X X X X X X 7
Hartebeesthoek HART ROGUE X X X X 4
Herstmonceux HERS ROGUE X X X X X X X 7
Hobart HOBA/TASM MINIMAC X X X X X X X 7
Kokee Park KOKB ROGUE X X X X 4
Kootwijk KOSG ROGUE X X X X X X X 7
Madrid DS60 ROGUE X X X X X X 6
Mas Pallomas MASP ROGUE X X X X X X 6
Matera MATE ROGUE X X X X X X 6
McMurdo MCMU ROGUE X X X X X X X 7
Metsahovi METS ROGUE X X X X X X X 7
Mojave MOJ1/MOJA MINIMAC X X X X X X 6
Ny Alesund NALL/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 MESA 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 X X X 7
Albert Head ALBH ROGUE X X X X X X X 7
Richmond RCMA/RICH MINIMAC X X X X X X X 7
Saint John's STJO ROGUE X X X X X X X 7
Santiago SANT ROGUE X X X X X X X 7
Taiwan TAIW ROGUE X X X X X X X 7
Tidbinbilla DS40 ROGUE X X X X 4
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 X X X X 7
Usuda USUD ROGUE X X X X X X X 7
Victoria PGC1 ROGUE X X X X X X X 7
Wellington WELL TRIMBLE X X X X X X X 7
Westford WES1/WEST MINIMAC X X X X X X 6
Wettzell WETT/WTZL ROGUE X X X X X X X 7
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
------------------ ---- ---------- -- -- -- -- -- -- -- -----
Totals: 38 stations 31 38 37 36 36 36 37 250
Current IGS GPS Data Holdings (as of 07-Jul-92)
IGS Week 2 (Jun 28 thru Jul 4, 1992; Days 180 thru 186)
1 1 1 1 1 1 1
Mon. 8 8 8 8 8 8 8 No.
Site Name Name Receiver 0 1 2 3 4 5 6 Sites
------------------ ---- ---------- - - - - - - - -----
Algonquin ALGO ROGUE X X X X X X X 7
Fairbanks FAIR ROGUE X X X X X X 6
Goldstone DS10 ROGUE X X 2
Graz GRAZ ROGUE X X X X X X X 7
Hartebeesthoek HART ROGUE X X 2
Herstmonceux HERS ROGUE X X X 3
Hobart HOBA MINIMAC X X X X X X 6
Kokee Park KOKB ROGUE X X X X X 5
Kootwijk KOSG ROGUE X X X X X X X 7
Madrid DS60 ROGUE X X 2
Mas Pallomas 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 5
Metsahovi METS ROGUE X X X X X X X 7
Mojave MOJ1 MINIMAC X X X X X X X 7
Ny Alesund NALL/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 4
Pasadena MESA ROGUE X X X X X X 6
Penticton DRAO ROGUE X X X X X X X 7
Pinyon Flat PINY ROGUE X X X X X X 6
Albert Head ALBH ROGUE X X X X X X X 7
Richmond RCMA MINIMAC X X X X X X X 7
Saint John's STJO ROGUE X X X X X X X 7
Santiago SANT ROGUE X X X X X 5
Taiwan TAIW ROGUE X X X X X X X 7
Tidbinbilla DS40 ROGUE X X 2
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 X X X X 7
Usuda USUD ROGUE X X X X X X 6
Victoria PGC1 ROGUE X X X X X 5
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 X 7
Yaragadee YAR1 ROGUE X X X X X X 6
Yellowknife YELL ROGUE X X X X X X X 7
Zimmerwald ZIMM TRIMBLE X X X X X X X 7
------------------ ---- ---------- -- -- -- -- -- -- -- -----
Totals: 38 stations 36 36 33 33 32 24 31 225
***** Some general comments:
1. We have been receiving data routinely from five sources: JPL, CIGNET,
AIUB, EMR, and DELFT (backup for the Kootwijk data). A breakdown of who gives
what is included below.
JPL CIGNET EMR AIUB DELFT IGS
------ ------ ------ ------ ------ ------
Algonquin ALGO ---- ALGO ---- ---- ALGO
Fairbanks FAIR ---- ---- ---- ---- FAIR
Goldstone DS10 ---- ---- ---- ---- GOLD
Graz ---- ---- ---- GRAZ ---- GRAZ
Hartebeesthoek HART ---- ---- ---- ---- HART
Herstmonceux HERS HERS ---- ---- ---- HERS
Hobart ---- HOBA ---- ---- ---- HOBA
TASM (1)
Kokee Park KOKB ---- ---- ---- ---- KOKB
Kootwijk KOSG KOSG ---- ---- KOSG KOSG
Madrid DS60 ---- ---- ---- ---- MADR
Mas Pallomas ---- ---- ---- MASP ---- MASP
Matera MATE MATE ---- ---- ---- MATE
MATR (1)
McMurdo MCMU ---- ---- ---- ---- MCMU
Metsahovi METS METS ---- ---- ---- METS
Mojave ---- MOJ1 ---- ---- ---- MOJ1
MOJA (1)
Ny Alesund NALL NYAL ---- ---- ---- NYAL
Onsala ONSA ONSA ---- ---- ---- ONSA
Pamate PAMA ---- ---- ---- ---- PAMA
Pasadena MESA ---- ---- ---- ---- JPL1?
Penticton PENT ---- DRAO ---- ---- DRAO
Pinyon Flat PINY ---- ---- ---- ---- PIN1
Albert Head ALBH ---- ALBH ---- ---- ALBH
Richmond ---- RCMA ---- ---- ---- RCMA
RICH (1)
Saint John's STJO ---- STJO ---- ---- STJO
Santiago SANT ---- ---- ---- ---- SANT
Scripps SIO1 ---- ---- ---- ---- SIO1
Taiwan T986 TAIW ---- ---- ---- TAIS?
Tidbinbilla DS40 ---- ---- ---- ---- CANB
Townsville ---- TOWN ---- ---- ---- TOWN
Tromso TROM TROM ---- ---- ---- TROM
Tsukuba ---- TSUK ---- ---- ---- TSUK
Usuda USUD ---- ---- ---- ---- USUD
Victoria PGC1 ---- ---- ---- ---- PGC1
Wellington ---- WELL ---- ---- ---- WELL
Westford ---- WES1 ---- ---- ---- WES1
WEST (1)
Wettzell WETZ WETT ---- ---- ---- WETT
WTZL (1)
Yaragadee YAR1 ---- ---- ---- ---- YAR1
Yellowknife YELL ---- YELL ---- ---- YELL
Zimmerwald ---- ---- ---- ZIMM ---- ZIMM
Notes: (1) IGS-requested name change performed around day 176
2. Archiving of IGS data. We archive all GPS data to optical disks on a
daily basis. We can have two optical disks on-line at any one time. The
archived data include observation, navigation, concatenated navigation, and
small summary files (required for our archiving process). All data but the
summary files are stored in compressed RINEX. At the present rate, it seems
that we would be able to store about 20 days on one optical disk (i.e., 40 or
so days on-line at any one time). This method of storage should leave room on
each disk for the products generated from these data (see 3 below). All data
are stored in the disks GPS1:[GPSDATA...] and GPS2:[GPSDATA...], with
subdirectories first by day, then by data type (e.g., GPS1:[GPSDATA.92181.92O]
contains all the observation files for day 181).
3. Archiving of IGS products. As you have discussed in earlier IGS Mail,
the CDDIS will serve as a repository for the IGS products generated by the
analysis centers. To date, I have only heard from three centers regarding their
future deposits of products. I have established a PRODUCTS directory on our
first IGS optical disk (i.e., GPS1:[PRODUCTS]). I have also created
subdirectories under this main directory by GPS week. For now, files from all
analysis centers will be placed in these weekly subdirectories. Berne has
delivered some products which have been stored in this manner.
***** Some "problems areas" to note:
1. Some data suppliers are not following the agreed to naming convention
for the files. This includes both monument names and sequence numbers. At
previous IGS meetings it was agreed that the sequence number (i.e., the # in
the file name mmmmddd#.yyt_Z) was to begin with 0, not 1. Some files still
arrive at CDDIS with a 1, despite communication from us asking for the correct
file name format.
2. Monument names. There have been numerous messages about what the proper
monument names should be. I see that JPL still does not subscribe to the new
names, but there may be some reasons for this that I am not aware of yet (see
IGS Mail #34).
3. Late deliveries. There were some delays because of the start up process
and system problems at JPL. I believe these have already worked themselves out
as we all became more efficient, and since JPL overcame system and environmental
problems. Some duplicate files continue to arrive each day, but we will work
through the problems with JPL.
4. Duplicate files. We have sometimes seen that some suppliers send in a
second version of the same data released on an earlier day. After performing
some selected comparisons and finding no difference, we have decided to ignore
duplicates from the same source unless specifically directed by the source that
the data is a replacement data set. In some cases files were larger in size and
where we saw this we replaced the earlier data set with the revised one.
5. Duplicate deliveries. We get the same data from several sources. In
general, we copy the files to our optical archive on a first-come-first-copied
basis. In other words, the source that supplies the data first gets their data
copied to the archive. However, in some cases each source gives their data a
different four-digit name, so the user could become confused. The above list
details all the different sites we receive, the different names, and their
respective sources.
6. Navigation files. We have not been receiving all of the navigation
files for each observation file received. In addition, the concatenation
program supplied by Berne had to be modified to correct a file format problem
and to handle RINEX V2. Therefore, we were unable to create BRDC files until
July 1, after Werner quickly repaired his software. We now create BRDC files
on a routine basis.
Well, I think that is all I have to say for now, and I am sure that it is
enough for you folks to read anyways. Please feel free to contact me if you
have any questions/concerns/comments. I hope this information is not too late
in arriving to you for inclusion in the first general report of the IGS.
Best regards,
Carey.
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>From: Dave Starr
Subject: JPL analysis files
------------------
>From JPL.
The anouncment of the JPL analysis files contained an error in how to
obtain the data from CDDIS. The data is NOT available via AFTP from
CDDIS. The JPL analsis files are available through the IGS account.
Sorry for any confusion or inconvience caused by this mistake.
Dave Starr
JPL GPS Operations
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>From: IERS
Subject: EARTH ORIENTATION BULLETIN No 1
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* *
IGS'92 EARTH ORIENTATION BULLETIN 1
* *
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9 JULY 1992
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)
JUN 9 48782 -1548 3222 -52293
JUN 10 48783 -1542 3245 -52489
JUN 11 48784 -1538 3272 -52667
JUN 12 48785 -1535 3300 -52827
JUN 13 48786 -1535 3328 -52972
JUN 14 48787 -1534 3358 -53109
JUN 15 48788 -1533 3387 -53243
JUN 16 48789 -1532 3415 -53378
JUN 17 48790 -1532 3444 -53520
JUN 18 48791 -1533 3472 -53671
JUN 19 48792 -1532 3499 -53831
JUN 20 48793 -1530 3523 -54001
JUN 21 48794 -1527 3545 -54179
JUN 22 48795 -1521 3567 -54362
JUN 23 48796 -1513 3589 -54543
JUN 24 48797 -1504 3611 -54722
JUN 25 48798 -1493 3635 -54888
JUN 26 48799 -1480 3660 -55039
JUN 27 48800 -1467 3685 -55181
JUN 28 48801 -1455 3710 -55316
JUN 29 48802 -1444 3735 -55446
JUN 30 48803 -1432 3759 -55579
JUL 1 48804 -1420 3783 44276
JUL 2 48805 -1406 3807 44116
JUL 3 48806 -1391 3829 43933
JUL 4 48807 -1376 3853 43735
JUL 5 48808 -1361 3876 43531
JUL 6 48809 -1346 3899 43330
JUL 7 48810 -1330 3922 43147
JUL 8 48811 -1315 3944 42984
JUL 9 48812 -1298 3966 42845
2 - INDIVIDUAL SERIES OF EARTH ORIENTATION PARAMETERS
The series listed hereafter,obtained by the IGS Processing Centres,
are described in the IG'92 Earth Orientation Bulletin number 2.
2 -a - EOP(CODE) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y UT1-UTC
hours
JUN 19 48792.50 -1517 3539 -53779 1 2 2
JUN 20 48793.50 -1525 3566 -53929 1 1 2
JUN 21 48794.50 -1495 3560 -54095 2 2 2
JUN 22 48795.50 -1523 3579 -54275 2 2 2
JUN 23 48796.50 -1490 3596 -54476 2 2 2
JUN 24 48797.50 -1500 3627 -54664 3 4 3
JUN 25 48798.50 -1484 3634 -54829 2 2 2
JUN 26 48799.50 -1503 3697 -54970 1 2 1
JUN 27 48800.50 -1490 3698 -55102 1 1 1
2 -b - EOP(CSR) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y UT1-UTC
hours
JUN 21 48794.50 -1521 3536 0 3 4 0
JUN 22 48795.50 -1513 3581 0 3 3 0
JUN 23 48796.50 -1499 3626 0 67 82 0
JUN 24 48797.50 -1485 3619 0 94 136 0
JUN 25 48798.50 -1485 3662 0 4 5 0
JUN 26 48799.50 -1471 3686 0 3 3 0
JUN 27 48800.50 -1451 3733 0 3 3 0
2 -c - EOP(JPL) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y UT1-UTC
hours
JUN 21 48794.50 -1523 3574 0 3 3 0
JUN 22 48795.50 -1506 3595 0 2 3 0
JUN 23 48796.50 -1511 3593 0 2 3 0
JUN 24 48797.50 -1506 3612 0 3 4 0
JUN 25 48798.50 -1489 3673 0 3 3 0
JUN 26 48799.50 -1474 3700 0 2 3 0
JUN 27 48800.50 -1456 3724 0 2 3 0
2 -d - EOP(SIO) 92 P 01
Units : 0.0001" for x,y, 0.00001s for UT1.
Date Uncertainties
1992 MJD x y UT1-UTC Passes Span x y UT1-UTC
hours
JUN 7 48780.00 -1575 3170 0 3 3 0
JUN 8 48781.00 -1574 3202 0 4 5 0
JUN 9 48782.00 -1542 3223 0 6 5 0
JUN 10 48783.00 -1546 3260 0 2 2 0
JUN 11 48784.00 -1563 3271 0 4 4 0
JUN 12 48785.00 -1546 3313 0 2 2 0
JUN 13 48786.00 -1558 3309 0 4 5 0
JUN 14 48787.00 -1547 3346 0 4 5 0
JUN 15 48788.00 -1520 3386 0 3 2 0
JUN 16 48789.00 -1532 3412 0 4 4 0
JUN 17 48790.00 -1535 3435 0 5 7 0
JUN 18 48791.00 -1526 3464 0 4 6 0
JUN 19 48792.00 -1547 3511 0 4 6 0
JUN 20 48793.00 -1518 3517 0 4 4 0
JUN 21 48794.00 -1532 3555 0 4 4 0
JUN 22 48795.00 -1517 3580 0 4 4 0
JUN 23 48796.00 -1490 3578 0 4 4 0
JUN 24 48797.00 -1494 3617 0 3 3 0
JUN 25 48798.00 -1494 3622 0 4 4 0
JUN 26 48799.00 -1444 3659 0 5 4 0
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