[IGSREPORT-1007] jpl07507.sum
David
David
Mon Jun 6 14:06:19 PDT 1994
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IGS Electronic Report Mon Jun 6 14:06:19 PDT 1994 Message Number 1007
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Author: David C. Jefferson, James F. Zumberge
Subject: jpl07507.sum
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JPL ANALYSIS REPORT GPS-WEEK 0750 (DAYS 142-148, DATES 1994 May 22 - May 28)
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Submitted by the JPL IGS/FLINN Analysis Team:
J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb
all at the Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA 91109.
Files listed below are available in Unix compressed format and can be
retrieved using anonymous ftp to sideshow.jpl.nasa.gov (128.149.70.41),
directory pub/jpligsac/0750. These files have also been sent to the CDDIS.
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filename contents
______________________________________________________________________________
jpl07507.sum This text file.
jpl07507.erp Earth rotation parameters for GPS week 750.
jpl0750[0-6].sp3 GPS ephemerides for GPS week 750, sp3 format.
______________________________________________________________________________
STRATEGY UPDATE
Our strategy of allowing additional phase ambiguity parameters whenever
the discontinuity in post-fit residuals exceeds 10 cm sometimes results
in an over-parametrized problem. The symptoms include some zero
post-fit residuals (that is, a perfect fit for some measurements) and
poor clock repeatability. These symptoms occurred for nearly every day
in week 750.
The addition of some pseudorange data adds sufficient data strength to
remedy the situation. Beginning this week we include, in the parameter
estimation phase of our analysis, pseudorange data from 8 sites with
TurboRogue receivers. We have assigned a 10-m data noise sigma to these
measurements. (For comparison, the corresponding figure for phase data
is 1 cm.)
Because we had the task of reprocessing the entire week in a small
amount of time, we have chosen to use a 20-station subset of the global
network. The subset consists of the 13 IGS fiducial sites (two of which
have TurboRogues), 6 additional sites with TurboRogues, and 1 site which
is neither a constrained site nor has a TurboRogue. The exclusion of
other sites is not necessarily indicative of problems at those stations.
GENERAL
The inclusion of ONSA caused an excessive number of outliers in the
analyses of days 144 and 145. A similar problem was caused by FORT on
day 147. We have deleted data from these sites on the corresponding
days.
WARNING: Data from ONSA excluded days 144 and 145 (May 24, 25).
WARNING: Data from FORT excluded day 147 (May 27).
JPL LODR TABLE GPS week 750 (1994 May 22 - May 28)
MJD LODR +/-
(ms/day)
49494.5 2.17 0.02
49495.5 2.12 0.02
49496.5 2.07 0.02
49497.5 2.04 0.02
49498.5 1.93 0.02
49499.5 1.83 0.02
49500.5 1.80 0.03
END LODR TABLE
NOTE: In the following table, UT1R-UTC are the assumed nominal values from
IERS Bulletin-B predicts; estimated LODR values are given in the previous
table. See IGS Mail Message 97 for details.
JPL UTPM TABLE GPS week 750 (1994 May 22 - May 28)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49494.5 .18587 .28996 -.14870 .00013 .00012 .00000 .0 .08 .00 .00 20 25 0
49495.5 .18498 .28856 -.15107 .00013 .00013 .00000 .0 .08 .00 .00 20 25 0
49496.5 .18323 .28825 -.15343 .00019 .00019 .00000 .0 .02 .00 .00 19 25 0
49497.5 .18174 .28598 -.15577 .00017 .00017 .00000 .0 .00 .00 .00 19 25 0
49498.5 .18078 .28313 -.15810 .00016 .00016 .00000 .0 .05 .00 .00 20 25 0
49499.5 .17938 .28122 -.16041 .00017 .00020 .00000 .0 .03 .00 .00 18 25 0
49500.5 .17812 .27854 -.16271 .00020 .00021 .00000 .0 .07 .00 .00 19 25 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 750:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 750 (1994 May 22 - May 28)
94 5 22 94 5 23 94 5 24 94 5 25 94 5 26 94 5 27 94 5 28
prn 3d rss (m)
1 0.85 1.30 1.77 1.41 0.89 0.71 0.95
2 0.49 0.19 0.69 0.44 0.51 0.83 0.45
4 0.58 0.67 0.51 0.41 0.56 1.14 0.61
5 0.67 0.28 0.32 0.71 0.51 0.35 0.52
6 0.68 0.39 0.81 0.61 0.58 0.71 0.61
7 1.30 0.65 0.88 0.65 1.27 0.71 1.51
9 1.17 0.92 0.75 0.92 0.53 0.93 1.15
12 0.57 0.46 0.40 0.31 0.41 0.57 0.69
14 0.68 0.66 0.83 0.83 0.57 0.81 0.69
15 0.73 1.68 0.89 0.74 1.26 1.19 0.85
16 0.25 0.46 1.18 0.96 0.79 0.47 0.43
17 0.64 0.42 1.12 0.95 0.64 0.87 0.54
18 0.58 1.14 1.31 1.53 0.91 0.38 0.80
19 0.53 1.07 1.38 1.98 1.23 1.22 0.58
20 1.07 0.24 0.41 0.43 0.37 0.31 0.49
21 0.52 0.38 0.37 0.48 0.57 0.60 0.33
22 0.43 0.47 0.41 0.46 1.22 1.28 1.31
23 0.16 0.16 0.26 0.60 0.58 0.48 0.50
24 0.44 0.58 0.69 0.45 0.70 0.88 0.73
25 1.52 2.07 2.34 1.67 1.14 1.46 1.50
26 1.19 0.55 0.49 1.13 0.62 0.54 0.86
27 1.13 1.07 0.94 1.46 1.27 1.07 0.92
28 0.57 0.44 0.74 1.00 1.12 0.93 0.95
29 0.45 0.58 0.78 0.62 0.61 0.50 0.53
31 0.97 0.47 0.64 0.54 0.63 0.73 0.84
_______________________
END ORBIT REPEATABILITY TABLE
As described in IGS Mail Message 37, the following table compares the JPL
precise ephemerides with those from the broadcast ephemeris:
JPL COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
94 5 22 94 5 23 94 5 24 94 5 25 94 5 26 94 5 27 94 5 28
prn 3d rss (m)
1 8.4 8.0 7.9 8.1 8.7 7.7 7.4
2 4.5 5.2 8.2 8.2 5.8 5.3 3.6
4 9.4 9.8 10.3 9.7 9.4 9.1 9.8
5 3.1 3.3 6.5 6.8 5.2 4.8 5.1
6 9.7 9.7 7.7 6.9 8.1 6.9 8.6
7 8.3 8.3 8.1 9.3 9.4 9.7 8.7
9 6.2 4.4 7.7 6.2 6.8 6.1 9.4
12 4.5 3.0 7.3 7.7 5.0 4.6 5.2
14 3.4 4.4 3.1 3.2 3.6 3.4 3.5
15 4.7 4.4 5.0 5.0 5.4 4.9 5.1
16 5.8 6.4 8.2 10.5 8.4 7.3 7.5
17 4.0 4.5 6.0 5.0 5.1 4.0 4.9
18 7.2 7.7 8.0 8.1 9.1 9.8 7.8
19 10.9 10.1 9.4 12.3 11.6 10.0 10.8
20 4.4 6.0 6.4 5.2 3.9 5.7 5.0
21 4.4 3.9 4.2 5.4 4.1 3.7 5.3
22 3.5 4.9 6.7 4.4 4.0 3.5 6.0
23 3.0 3.1 3.6 2.9 3.6 3.0 3.1
24 6.9 8.2 10.8 10.1 9.8 10.3 10.0
25 7.8 6.8 8.2 8.8 10.7 12.1 10.8
26 5.0 6.4 7.2 6.0 4.4 4.4 4.3
27 10.5 10.9 12.1 9.2 11.2 10.0 11.5
28 5.5 4.9 4.4 4.1 4.8 5.6 4.8
29 3.3 2.9 3.5 4.3 5.3 5.1 4.7
31 4.8 5.3 5.9 5.1 4.9 5.6 5.8
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
The following tables, as explained in IGS Report Nos. 99 and 295, indicate the
amount of global network tracking data used in this week's analysis:
JPL SITE SUMMARY TABLE (no. stations) GPS week 750 (1994 May 22 - May 28)
94 5 22 94 5 23 94 5 24 94 5 25 94 5 26 94 5 27 94 5 28
Fiducial 11.9 11.7 11.4 11.0 11.5 12.1 11.2
Total 18.5 18.4 16.9 16.6 17.4 16.0 15.8
END SITE SUMMARY TABLE
JPL GROUND STATION INCLUSION TABLE GPS week 750 (1994 May 22 - May 28)
94 5 22 94 5 23 94 5 24 94 5 25 94 5 26 94 5 27 94 5 28
site % data
ALGO*# 103 103 102 103 103 104 101
AREQ# 60 103 104 108 104 106 107
FAIR* 104 106 101 102 98 105 92
FORT# 103 76 65 64 44 0 52
GOLD* 77 62 67 66 77 83 85
HART* 93 77 66 65 66 83 64
HOBA# 102 104 103 104 104 30 0
KOKB* 112 112 108 112 113 114 113
KOSG* 88 89 92 81 79 86 87
MADR* 67 60 81 61 69 73 68
MCMU# 110 110 110 109 88 0 44
ONSA# 101 101 0 0 100 101 104
PAMA 79 76 73 74 49 43 49
SANT* 91 104 107 107 96 103 76
TIDB* 76 62 76 71 85 82 86
TROM* 105 107 107 103 102 103 87
TSKB# 102 95 100 104 104 104 104
WETT* 70 88 70 49 73 74 73
YAR1* 101 100 60 77 91 99 104
YELL*# 105 101 100 105 97 105 84
_______________________
*Indicates fiducial site; #indicates TurboRogue psuedo-range used
END GROUND STATION INCLUSION TABLE
As described in IGS Report No. 634, the table below indicates the repeatability
of clock solutions for all satellites and stations used in this week's analysis:
JPL CLOCK REPEATABILITY TABLE GPS week 750 (1994 May 22 - May 28)
94 5 22 94 5 23 94 5 24 94 5 25 94 5 26 94 5 27 94 5 28
comp log10(rms/ps)
PRN01 3.5 3.3 3.2 3.3 3.3 3.3 3.9
PRN02 4 2.7 3 4 4.3 3.0 3
PRN04 3.2 3.2 2.8 3.3 3.9 2.8 3.8
PRN05 3.8 3.3 3.0 3.2 3.1 3.1 3.8
PRN06 3.5 3.3 3.1 3.1 3.1 3.2 4.2
PRN07 4.4 3.4 2.7 2.7 3.2 3.4 3.5
PRN09 4.3 3.7 3.4 3.3 3.3 3.4 3.9
PRN12 4.4 3.8 3.4 2.9 3.4 3.1 3.7
PRN14 3.9 4.1 3.9 3.6 3.2 3.5 3.6
PRN15 3.7 4.1 4 3.5 3.0 3.4 4.1
PRN16 3.7 3.2 2.7 2.4 2.7 2.5 4.0
PRN17 3.3 3.5 3.2 3.0 3.0 3.4 4.8
PRN18 3.9 3.1 3.1 3.3 3.0 3.1 3.4
PRN19 3.7 3.3 3.3 3.1 3.1 3.6 3.2
PRN20 3.8 3.1 2.9 5.2 5.9 3.3 3.8
PRN21 3.9 3.9 3.1 2.8 3.0 2.9 4.5
PRN22 4.1 2.8 3.4 2.8 3.1 3.1 4.3
PRN23 4.0 3.4 3.1 3.5 2.8 3.4 4.8
PRN24 4.2 3.3 3.1 3.2 3.0 2.9 3.5
PRN25 3.8 3.9 3.4 3.2 3.4 3.4 3.3
PRN26 3.9 3.2 3.0 3.0 3.0 3.2 4.4
PRN27 3.8 3.1 3.7 3.1 3.1 3.0 3.1
PRN28 3.9 3.5 3.2 2.9 3.2 3.7 4.8
PRN29 3.8 3.2 3.4 3.0 3.1 2.9 3.3
PRN31 4.1 3.0 3.4 2.9 3.4 3.5 4.8
AREQ 3 3.3 3.0 2.8 2.9 3.0 3.2
CANB 3.9 4 3.6 3.7 3.4 2.9 4.5
FAIR 3.7 3.4 3.8 4.0 4.7 3.6 3.8
FORT 3 2.5 3.0 3.7 5 3
GOLD 3.6 3 3.3 3.8 3.3 3.6 3.7
HART 4 3.7 3.8 3.7 4.2 3.4 4.4
HOBA 3.6 3.8 3.1 2.9 2.8 3
KOKB 3.6 3.5 3.9 4.0 4.8 3.4 3.5
KOSG 3.7 3.1 3.1 3.9 4.7 2.2 2.6
MADR 3.4 4 3.4 4.0 4.8 3.4 3.4
MCMU 3.8 3.9 3.0 2.9 3 5
ONSA 3.4 3 3 2.8 2.9
PAMA 3 3.1 3.8 4.4 5.1 3.5 4.3
SANT 4 3.7 4.1 3.9 4.4 3.7 4.0
TROM 3.9 4.3 4.0 4.0 4.4 3.6 4.0
TSKB 3.4 3.0 3.3 2.9 2.9 3.0 3.2
WETB 3.2 3.7 3.7 4 3.9 3.2 3.6
YAR1 3.8 3.8 3.3 3 3.5 3.7 4.6
YELL 3.1 3.1 2.7 2.3 2.8 3.0 3.2
_______________________
END CLOCK REPEATABILITY TABLE
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