[IGSMAIL-252] jpl data center changes
Dave
Dave
Sat May 8 13:55:08 PDT 1993
IGS Electronic Mail 8-MAY-1993 13:55:08 Message Number 252
***********************************************************************
>From: Dave Starr
Subj: jpl data center changes
-----------------------------
As of 6 May 1993, GPS tracking data processed by the JPL GPS Data Processing
Center will be posted in the RINEX version 2. These files will represent
cross-correlation data from Rogue/TurboRogue receivers using the conventions
agreed upon at the recent IGS meeting in Berne. Due to other processing
constraints we will generate version 1 navigation files for the next couple of
weeks. Note to Gipsy users: Gipsy software has been updated to accomodate
changes for Rinex version 2.
A summary of changes and examples of the new JPL files follow.
- Dave and Tom
=======================================================================
W. Dave Starr Telephone: (818) 354 7436
Thomas G. Lockhart Telephone: (818) 354 6102
GPS Networks & Operations Group FAX: (818) 393 4965
Jet Propulsion Laboratory Email: starr at logos.jpl.nasa.gov
4800 Oak Grove Dr.
Pasadena, CA 91109
=======================================================================
Summary of changes for Rinex version 2 tracking data from JPL:
1) Rinex version number changes from 1 to 2.
2) END OF HEADER terminates file header (rather than blank line).
3) Data ordering changes:
a) (DSN sites only) from CA, L1, L2, P1, P2 to L1, L2, P1, P2, CA.
b) (non-DSN sites with AS off) from L1, L2, P1, P2 to L1, L2, P1, P2.
b) (non-DSN sites with AS on) from L1, L2, P1, P2 to L1, L2, P1, P2, CA.
4) For tracking in cross-correlation mode (usually, with AS (Y-code) on):
a) (non-DSN sites only) P-code tracking has CA = 0, sig = 1.
b) (all sites) P-code tracking has lli = 0, 1 (bit 0 => lli).
c) (all sites) Y-code tracking has P1 = 0, sig = 1.
d) (all sites) Y-code tracking has lli = 4, 5 (bit 2 => AS).
5) Signal strength (sig) field is mapped as follows:
SNR SIG
a) >500 9
b) >100 8
c) > 50 7
d) > 10 6
e) > 5 5
f) > 0 4
g) = 0 1
h) bad 1
i) unknown 0
Summary of changes for Rinex version 2 ephemerides data from JPL:
1) Rinex version number changes from 1 to 2.
2) END OF HEADER terminates file header (rather than blank line).
3) extra line added to the end of each data block (currently, zero filled).
Tracking file example:
2 OBSERVATION DATA RINEX VERSION / TYPE
TRK_TO_RINEX v1.5 JET PROPULSION LAB. 93-05-07 12:10:58 PGM / RUN BY / DATE
FILES OBTAINED FROM THIRD PARTIES MAY NOT BE IDENTICAL TO COMMENT
THE LATEST AVAILABLE FROM JPL. FOR INFORMATION CONTACT: COMMENT
THOMAS G. LOCKHART | PHONE (818)354-6102 COMMENT
NASA/JPL M/S 238-625 | FAX (818)393-4965 COMMENT
4800 OAK GROVE DRIVE | EMAIL jplgps at logos.dnet.nasa.gov COMMENT
PASADENA CA 91109 USA | LOGOS::JPLGPS COMMENT
USUDA MARKER NAME
GNET02 JPL OBSERVER / AGENCY
0 ROGUE 7.00.1 REC # / TYPE / VERS
0 ANT # / TYPE
-3855280.6603 3427406.8608 3741032.0342 APPROX POSITION XYZ
0.0000 0.0000 0.0000 ANTENNA: DELTA H/E/N
1 1 WAVELENGTH FACT L1/2
5 L1 L2 P1 P2 C1 # / TYPES OF OBSERV
30 INTERVAL
93 4 30 0 0 0.000000 TIME OF FIRST OBS
93 4 30 10 38 0.000000 TIME OF LAST OBS
END OF HEADER
93 04 30 00 00 0.0000000 0 6 01 12 20 21 23 25
-1195727.61048 -931735.01646 0.00041 20861011.93946 20861010.64248
1982626.96908 1544902.54907 23849279.00208 23849282.91107 0.00001
93631.50148 72960.94446 0.00041 20175597.33246 20175595.54948
1678552.03148 1307962.15345 0.00041 21791418.85745 21791414.66148
2425887.42448 1890299.65144 0.00041 23476306.05644 23476300.47848
-1617705.71548 -1260547.52644 0.00041 22898018.77344 22898015.36348
93 04 30 00 00 30.0000000 0 6 01 12 20 21 23 25
-1243906.58648 -969277.07146 0.00041 20851842.84246 20851841.33248
2064687.14508 1608845.46807 23864894.60508 23864898.42107 0.00001
104366.16748 81325.63146 0.00041 20177639.92946 20177638.33648
1756704.97948 1368860.50145 0.00041 21806291.00745 21806287.11548
2532758.67548 1973575.81644 0.00041 23496645.30844 23496638.96048
-1686741.29748 -1314341.42945 0.00041 22884882.00345 22884879.20048
93 04 30 00 01 0.0000000 0 6 01 12 20 21 23 25
-1291747.09548 -1006555.38546 0.00041 20842740.18246 20842738.74048
2146695.37208 1672747.91107 23880500.38808 23880504.17207 0.00001
115647.73248 90116.47346 0.00041 20179786.70146 20179784.77148
1835285.58548 1430092.07845 0.00041 21821243.77845 21821240.10248
2639745.74948 2056942.19344 0.00041 23517003.91144 23516997.71148
-1755645.33248 -1368032.80844 0.00041 22871768.57344 22871766.27848
.
.
.
Navigation file example:
2 NAVIGATION DATA RINEX VERSION / TYPE
TRK_TO_RINEX v1.4 JET PROPULSION LAB. 93-05-07 10:21:21 PGM / RUN BY / DATE
FILES OBTAINED FROM THIRD PARTIES MAY NOT BE IDENTICAL TO COMMENT
THE LATEST AVAILABLE FROM JPL. FOR INFORMATION CONTACT: COMMENT
THOMAS G. LOCKHART | PHONE (818)354-6102 COMMENT
NASA/JPL M/S 238-625 | FAX (818)393-4965 COMMENT
4800 OAK GROVE DRIVE | EMAIL jplgps at logos.dnet.nasa.gov COMMENT
PASADENA CA 91109 USA | LOGOS::JPLGPS COMMENT
END OF HEADER
12 93 5 4 0 51 44.0-6.252820603549D-04-6.969003152335D-11 0.000000000000D+00
2.000000000000D+00 3.062500000000D+00 2.065443176856D-09 2.912841598516D+00
2.495944499969D-07 1.323342660908D-02 2.861022949219D-06 5.153633266449D+03
1.759040000000D+05-1.583248376846D-07 1.253362500425D+00 1.378357410431D-07
1.092283422926D+00 3.920937500000D+02-2.603573519002D-01-6.911359314428D-09
1.392915163365D-11 1.000000000000D+00 6.950000000000D+02 0.000000000000D+00
2.800000000000D+00 0.000000000000D+00 2.793967723846D-09 2.000000000000D+00
0.000000000000D+00 0.000000000000D+00 0.000000000000D+00 0.000000000000D+00
20 93 5 4 0 51 44.0 1.736171543598D-05 1.136868377216D-12 0.000000000000D+00
2.500000000000D+01-1.184062500000D+02 4.593762777230D-09-6.068857427700D-02
-6.280839443207D-06 4.496805369854D-03 6.098300218582D-06 5.153769971848D+03
1.759040000000D+05-3.166496753693D-08 1.983560646577D+00-7.636845111847D-08
9.625888477807D-01 2.633125000000D+02 1.500597521041D+00-8.347490563631D-09
-3.914448766789D-10 1.000000000000D+00 6.950000000000D+02 0.000000000000D+00
2.800000000000D+00 0.000000000000D+00 3.725290298462D-09 2.500000000000D+01
0.000000000000D+00 0.000000000000D+00 0.000000000000D+00 0.000000000000D+00
.
.
.
end of examples.
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