[IGSREPORT-0782] JPL Analysis Report (week 734)
David
David
Fri Feb 11 15:08:12 PST 1994
******************************************************************************
IGS Electronic Report Fri Feb 11 15:08:12 PST 1994 Message Number 0782
******************************************************************************
Author: David C. Jefferson, James F. Zumberge
Subject: JPL Analysis Report (week 734)
******************************************************************************
JPL ANALYSIS REPORT GPS-WEEK 0734 (DAYS 30-36, DATES 1994 Jan 30 - Feb 05)
******************************************************************************
Submitted by the JPL IGS/FLINN Analysis Team:
J F Zumberge, D C Jefferson, M B Heflin, 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/0734. These files have also been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl07347.sum This text file.
jpl07347.erp Earth rotation parameters for GPS week 734.
jpl0734[0-6].sp3 GPS ephemerides for GPS week 734, sp3 format.
______________________________________________________________________________
According to IGS Message #467, ALGO experienced limited tracking on day 031.
We have chosen to use FAIR as the reference clock for the processing of this
day only.
Also, according to the file gpsn1.txt obtained from tycho.usno.navy.mil,
PRN16/GPS16 was scheduled unusable for up to 12 hours beginning at 08:35 on day
033 (February 2). We have excluded this satellite from the this day's analysis.
Anti-spoofing has been in effect since Monday, Jan 31. Our AS strategy has
been augmented, resulting in improved quality of orbits. Based on
discontinuities in post-fit residuals following the first pass through the
parameter-estimation portion of the processing, we now allow the carrier-phase
bias parameter to be adjusted at times when the magnitude of the discontinuity
exceeds a threshold, currently set to be 10 cm. We have analyzed the the
period Jan 31 - Feb 04 with both the old and new strategies. We find the
following improvements:
- reduction in the median value of the orbit repeatability from 103 cm
to 63 cm
- reduced number of (deleted) outliers (> 5-cm post-fit residual), from
several thousand per day to ~200 per day
- 30% reduction in the number of post-fit residuals that exceed 1 cm in
magnitude (following outlier detection and deletion)
WARNING: FAIR (not ALGO) was used as the reference clock for day 031 (Jan 31).
WARNING: Data from PRN16/GPS16 were exlcuded on day 033 (Feb 2).
JPL LODR TABLE GPS week 734 (1994 Jan 30 - Feb 05)
MJD LODR +/-
(ms/day)
49382.5 2.32 0.04
49383.5 2.23 0.01
49384.5 2.16 0.01
49385.5 2.05 0.01
49386.5 2.01 0.01
49387.5 2.02 0.01
49388.5 2.10 0.02
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 734 (1994 Jan 30 - Feb 05)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49382.5 .08311 .47317 .12416 .00012 .00012 .00000 .0 .09 .00 .00 40 26 0
49383.5 .08626 .47203 .12161 .00009 .00010 .00000 .0 .06 .00 .00 41 26 0
49384.5 .08884 .47108 .11907 .00009 .00010 .00000 .0 .10 .00 .00 40 26 0
49385.5 .09152 .47064 .11652 .00010 .00011 .00000 .0 .06 .00 .00 41 25 0
49386.5 .09494 .47082 .11396 .00010 .00011 .00000 .0 .08 .00 .00 39 26 0
49387.5 .09697 .46965 .11140 .00011 .00013 .00000 .0 .09 .00 .00 40 26 0
49388.5 .09888 .46840 .10884 .00014 .00016 .00000 .0 .12 .00 .00 38 26 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 734:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 734 (1994 Jan 30 - Feb 05)
94 1 30 94 1 31 94 2 1 94 2 2 94 2 3 94 2 4 94 2 5
prn 3d rss (m)
1 0.57 1.81 0.80 0.75 1.33 1.51 1.1
2 0.44 0.80 1.16 1.11 1.43 1.09 0.3
3 0.52 0.63 0.51 0.41 0.36 0.59 0.9
4 1.27 0.80 0.84 0.94 1.45 0.93 1.1
5 0.92 2.66 2.03 1.55 1.80 1.31 0.9
7 0.32 0.69 0.88 0.52 1.48 1.05 0.5
9 0.47 0.31 0.55 0.62 0.55 0.44 0.3
12 0.50 0.28 0.40 0.39 0.64 0.56 0.4
13 0.59 0.75 0.85 0.87 1.32 0.92 0.4
14 0.37 1.03 0.57 0.55 0.85 0.73 0.8
15 0.39 0.64 0.46 0.51 0.65 0.52 0.3
16 0.51 0.61 0.6 2.8 4.91 1.2
17 0.67 0.96 0.71 1.42 0.71 0.89 1.0
18 0.29 0.60 0.58 0.51 0.41 0.34 0.2
19 0.34 0.40 0.50 0.49 0.47 0.59 0.4
20 1.04 1.12 1.19 1.22 1.83 1.42 0.8
21 0.58 0.49 0.99 0.78 1.06 0.88 0.6
22 0.24 0.82 1.02 0.82 1.62 0.60 1.0
23 0.59 0.93 1.54 1.42 0.99 1.07 0.8
24 0.6 0.46 0.77 1.18 1.68 0.94 0.7
25 0.36 0.54 0.66 0.73 0.67 0.66 1.1
26 0.43 0.25 0.52 0.52 0.82 0.48 0.3
27 0.19 0.53 0.52 0.32 0.72 0.59 0.2
28 0.21 0.40 0.64 0.90 1.03 0.39 0.9
29 0.23 0.28 0.35 0.51 0.56 0.39 0.4
31 0.29 0.54 0.39 0.57 0.57 0.48 0.6
_______________________
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 1 30 94 1 31 94 2 1 94 2 2 94 2 3 94 2 4 94 2 5
prn 3d rss (m)
1 6.9 7.3 7.6 6.1 6.3 8.4 7.7
2 7.7 7.4 7.3 7.9 7.5 8.5 9.3
3 23.1 14.4 12.2 11.2 10.3 9.5 8.7
4 27.5 17.5 16.1 18.8 20.5 21.4 21.0
5 11.2 8.2 7.8 9.2 7.6 8.9 7.3
7 5.4 3.9 4.8 4.9 5.1 4.7 5.5
9 3.9 6.1 5.8 4.4 5.0 3.4 3.7
12 6.5 7.1 6.4 7.3 3.8 3.9 4.4
13 6.9 8.0 6.7 6.4 6.9 5.6 6.4
14 7.6 7.3 6.7 5.2 4.9 5.0 6.1
15 6.6 4.1 4.8 6.6 4.5 4.2 5.8
16 5.0 5.0 4.7 24.2 15.9 16.6
17 5.0 5.8 5.5 6.0 5.3 5.7 5.2
18 24.2 16.2 8.5 6.2 16.1 9.3 10.0
19 7.8 6.0 4.6 7.2 7.1 5.3 4.9
20 11.9 7.4 8.1 6.1 6.3 7.3 7.6
21 8.4 7.2 4.5 3.8 5.1 6.5 4.1
22 7.6 8.1 8.1 8.6 8.3 11.1 10.5
23 8.2 4.2 4.5 5.4 7.2 6.8 6.6
24 11.1 10.5 12.0 12.1 9.0 8.2 9.3
25 7.3 5.6 5.4 5.1 5.4 6.2 6.9
26 7.3 5.2 6.3 6.5 6.7 7.6 6.5
27 8.0 7.0 5.9 6.2 6.7 7.7 6.9
28 6.0 4.2 3.7 3.7 3.9 4.0 3.3
29 5.9 4.5 4.7 5.2 4.7 4.3 5.9
31 5.6 5.1 5.2 5.1 4.8 5.6 5.0
_______________________
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 734 (1994 Jan 30 - Feb 05)
94 1 30 94 1 31 94 2 1 94 2 2 94 2 3 94 2 4 94 2 5
Fiducial 11.2 10.2 10.9 9.7 10.2 9.6 9.2
Total 36.5 33.3 31.8 31.4 30.5 31.7 33.1
END SITE SUMMARY TABLE
JPL GROUND STATION INCLUSION TABLE GPS week 734 (1994 Jan 30 - Feb 05)
94 1 30 94 1 31 94 2 1 94 2 2 94 2 3 94 2 4 94 2 5
site % data
ALBH 99 96 97 93 98 99 100
ALGO* 93 62 75 70 65 78 73
BRMU 62 59 60 90 97 80 88
CRO1 94 91 90 87 82 82 87
DRAO 98 84 73 81 77 71 70
FAIR* 104 77 78 70 77 72 78
FORT 100 91 92 89 91 93 93
GODE 92 96 95 85 60 90 94
GOLD* 91 93 89 87 66 57 72
GRAZ 0 0 0 66 0 0 89
HART* 98 78 90 76 81 69 84
HERS 97 78 81 79 68 77 85
HOBA 100 94 97 93 93 94 96
JPLM 102 70 66 60 64 76 0
KIRU 0 0 0 0 0 0 94
KOKB* 46 70 81 75 67 75 80
KOSG* 97 78 76 53 63 67 94
KOUR 93 92 89 79 0 80 90
MADR* 95 95 93 87 83 57 0
MASP 92 93 93 88 92 91 95
MATE 100 77 76 73 72 72 71
MCMU 107 83 48 29 76 0 87
MDO1 97 96 96 94 97 96 93
METS 94 74 88 81 76 76 76
NLIB 82 83 75 0 46 66 79
NYAL 104 104 103 99 103 103 103
ONSA 93 85 0 73 0 83 92
PAMA 93 76 25 68 74 76 72
PIE1 97 99 97 90 90 89 86
QUIN 99 87 75 91 75 88 93
RCM5 96 72 67 85 99 98 98
SANT* 99 79 74 72 73 75 36
STJO 98 93 97 93 95 97 96
TAIW 98 83 79 83 81 82 87
TIDB* 95 92 83 32 79 66 65
TROM* 100 101 100 95 100 100 98
USUD 100 88 69 63 67 81 0
VNDP 49 73 73 71 71 80 84
WEST 96 94 94 89 92 92 92
WETT* 99 67 71 70 79 72 66
YAR1* 102 89 78 87 85 74 79
YELL* 0 35 98 95 99 99 98
_______________________
*Indicates fiducial site; #indicates deweighted site.
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 734 (1994 Jan 30 - Feb 05)
94 1 30 94 1 31 94 2 1 94 2 2 94 2 3 94 2 4 94 2 5
comp log10(rms/ps)
PRN01 6 6 5.9 7.2 4.1 4.1 3
PRN02 6 6 7.7 7.2 4.0 3.8 4
PRN03 6 6 7.8 8.2 4.1 4.3 4
PRN04 6 6 8.2 7.9 4.0 3.8 4
PRN05 6 6 7.8 8.0 4.1 4.0 4
PRN07 6 6 7.7 7.3 4.0 3.9 4
PRN09 6 6 7.9 8.1 3.9 4.1 3
PRN12 6 6 7.9 8.1 4.3 4.3 4
PRN13 6 6 8.3 7.8 4.2 4.3 4
PRN14 6 6 7 7.2 4.0 4.1 3
PRN15 6 6 7 7.1 4.3 4.1 4
PRN16 6 7 7 4 4.0 3
PRN17 6 6 8.0 8.9 4.3 4.1 4
PRN18 6 6 7.0 7.5 3.7 3.7 4
PRN19 6 6 7.6 6.8 3.8 3.4 3
PRN20 6 6 7.8 8.1 4.1 4.0 4
PRN21 6 6 7.7 7.0 4.3 3.9 3
PRN22 6 6 7.4 7.1 4.0 3.9 4
PRN23 6 6 7.7 7.5 4.0 3.3 4
PRN24 6 6 8.1 8.0 4.0 4.3 4
PRN25 6 6 7.6 7.2 4.2 4.1 4
PRN26 6 6 7.6 7.4 3.9 4.0 4
PRN27 6 6 7.2 7.4 3.9 3.7 3
PRN28 6 6 7.3 7.3 4.0 3.5 3
PRN29 6 6 6.3 7.3 3.9 3.8 4
PRN31 6 6 6.8 7.3 3.9 4.0 4
ALBH 6 6 6.7 7.2 4.0 3.9 4
BRMU 6 6 6.4 6.8 4.1 3.8 4
CANB 6 6 7.9 8 4.2 4.0 4
CRO1 6 6 6.8 6.8 4.1 3 3
FAIR 8 7.3 4.1 3.5 4
FORT 6 6 7.0 7.0 4.3 4.0 4
GODE 6 6 6.6 6.8 4.0 3.8 4
GOLD 6 6 6.7 6.8 3.9 3.7 4
HART 6 6 7.4 7.7 4.2 4.1 4
HARV 6 6 6.7 7.0 3.8 3.5 4
HERS 6 6 7.9 7.0 3.8 3.9 4
HOBA 6 6 7.9 8.0 3.7 4.1 4
JPLM 6 6 6.3 7.1 4.1 1
KOKB 6 6 7.9 7.0 4.2 3.6 4
KOSG 6 6 7.8 7.1 4.1 3.9 4
KOUR 6 6 7.1 7 4 4
MADR 6 6 7.8 7.1 4.1 4
MASP 6 6 7.6 6.9 3.3 3.9 3
MATE 6 6 7.8 7.3 4.0 3.8 2
MCMU 6 6 5 7 4
MDO1 6 6 6.4 6.9 4.1 3.8 3
METS 6 6 7.7 7.9 3.9 4.3 5
NALL 6 6 7.5 7.6 4.2 4.0 4
NLIB 6 6 6 4 3.8 4
ONSA 6 4 4
PAMA 6 6 7.7 7.6 4.2 4.4 3
PENT 6 6 6.8 7.0 4.0 3.6 4
PIE1 6 6 6.7 6.9 3.9 3.8 3
QUIN 6 6 6.3 7.1 3.9 3.9 2
RCM5 6 6 7.0 6.9 4.0 3.3 3
SANT 6 6 7.3 7.5 3.9 4.0 2
STJO 6 6 7.1 6.6 3.8 4.0 4
TAIS 6 6 7.9 7 4.1 4.1 4
TROM 6 6 7.5 7.8 4.2 4.1 4
USUD 6 8 8.8 8.5 4.1 4
VNDP 6 6 7.0 6.9 4.0 3.4 3
WEST 6 6 6.5 6.8 4.0 3.3 4
WETB 6 6 7.8 7.1 4.2 3.7 4
YAR1 6 6 7.8 8.0 4.1 4.2 4
YELL 6 6.9 6.9 4.1 4.4 4
_______________________
END CLOCK REPEATABILITY TABLE
More information about the IGSREPORT
mailing list