[IGSREPORT-536] JPL report
djeff at cobra.jpl.nasa.gov
djeff at cobra.jpl.nasa.gov
Mon Oct 11 15:02:53 PDT 1993
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IGS Electronic Report 11-OCT-1993 15:02:53 Message Number 536
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From: djeff at cobra.jpl.nasa.gov
Submitted by
D C Jefferson, J F Zumberge, G Blewitt, M B Heflin, F H Webb
all at the Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA 91109.
The following files have been posted on BODHI (for access to BODHI contact
starr at logos.jpl.nasa.gov):
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl07157.sum This text file.
jpl07157.erp Earth rotation parameters for GPS week 715.
jpl07157.sp1 GPS ephemerides for GPS week 715, sp1 format.
jpl07157.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
Anti-spoofing was turned on for days 260-263 and 267-271 (Sep 17-20, 24-28).
Our analyses of days 262, 263, 267 and 268 were done using our new A-S strategy;
see jpl07147.sum for details.
According to the file gpsn3.txt obtained from tycho.usno.navy.mil, PRN23/GPS23
was scheduled unusable on day 263 (Sep 20) from 09:00 UT for up to 16 hours for
repositioning. We have therefore deweighted data from this satellite for this
day's processing.
Also, according to gpstd.txt (similarly obtained), PRN05/GPS35 was launched
on Aug 30, 1993 (day 242). Tracking and broadcast ephemeris data were available
as early as Sep 23 (day 266), however, we have chosen to exclude data from this
satellite for this week's analysis.
Data from WETT (Wettzell, Germany) were excluded from the analysis of day 268
(Sep 25); this site's data were not well modelled on this day.
WARNING: Data from PRN23/GPS23 have been deweighted for day 263 (Sep 20).
WARNING: Data from PRN05/GPS35 have been excluded for the entire GPS week 715.
WARNING: Data from WETT have been excluded for day 268 (Sep 25).
JPL LODR TABLE GPS week 715 (1993 Sep 19 - Sep 25)
MJD LODR +/-
(ms/day)
49249.5 2.41 0.06
49250.5 2.39 0.06
49251.5 2.41 0.05
49252.5 2.39 0.05
49253.5 2.44 0.05
49254.5 2.25 0.06
49255.5 2.39 0.06
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 715 (1993 Sep 19 - Sep 25)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49249.5 -.09568 .35167 .46710 .00020 .00023 .00000 .0 -.02 .00 .00 41 24 0
49250.5 -.09594 .35240 .46511 .00019 .00020 .00000 .0 -.03 .00 .00 41 24 0
49251.5 -.09601 .35321 .46309 .00013 .00014 .00000 .0 .05 .00 .00 42 24 0
49252.5 -.09623 .35460 .46107 .00013 .00014 .00000 .0 .05 .00 .00 42 24 0
49253.5 -.09640 .35632 .45903 .00014 .00015 .00000 .0 .09 .00 .00 42 24 0
49254.5 -.09481 .35636 .45697 .00020 .00021 .00000 .0 -.04 .00 .00 42 24 0
49255.5 -.09537 .36116 .45491 .00019 .00020 .00000 .0 .01 .00 .00 39 24 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 715:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 715 (1993 Sep 19 - Sep 25)
93 9 19 93 9 20 93 9 21 93 9 22 93 9 23 93 9 24 93 9 25
prn 3d rss (m)
1 0.44 0.15 0.14 0.20 0.56 0.63 0.84
2 0.63 0.41 0.36 0.22 0.57 1.29 0.88
3 0.77 0.43 0.34 0.34 0.41 0.82 1.60
7 0.43 0.29 0.36 0.37 0.65 0.72 1.56
9 0.29 0.33 0.23 0.11 0.39 0.41 0.61
12 0.33 0.37 0.28 0.29 0.64 0.81 1.02
13 0.37 0.22 0.21 0.21 0.81 0.74 1.14
14 0.70 0.42 0.32 0.23 0.62 2.32 1.40
15 0.50 0.25 0.17 0.27 0.78 1.26 0.83
16 1.36 0.58 0.26 0.29 0.92 1.95 2.45
17 0.87 0.28 0.23 0.12 0.46 0.85 0.92
18 0.80 0.35 0.35 0.39 0.40 1.10 1.84
19 0.50 0.46 0.34 0.59 0.63 0.72 1.51
20 0.65 0.24 0.22 0.20 0.75 1.59 1.01
21 0.31 0.30 0.12 0.18 0.45 0.91 0.60
22 1.04 0.60 0.42 0.37 0.74 1.46 1.55
23 3371.97 #2510.13 1063.54 0.26 0.26 1.43 0.48
24 1.18 0.96 0.27 0.25 0.48 0.87 4.57
25 0.57 0.23 0.19 0.25 0.56 3.28 3.18
26 0.91 0.38 0.19 0.14 0.39 0.68 1.96
27 0.57 0.69 0.35 0.28 0.65 1.52 1.31
28 0.16 0.30 0.25 0.19 0.21 0.80 1.02
29 0.32 0.39 0.42 0.33 0.47 2.23 0.86
31 0.65 0.28 0.21 0.24 0.27 0.81 0.90
_______________________
#Indicates deweighted satellite.
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
93 9 19 93 9 20 93 9 21 93 9 22 93 9 23 93 9 24 93 9 25
prn 3d rss (m)
1 0.0 5.8 6.6 7.3 7.8 7.8 8.0
2 15.3 15.1 12.5 11.4 10.3 11.1 13.1
3 4.9 4.3 4.4 4.4 4.88 6.4 7.1
7 8.2 9.6 12.5 8.2 5.7 6.0 7.8
9 2.6 4.4 9.1 4.3 12.2 9.7 6.4
12 4.0 3.8 3.6 3.0 3.0 4.1 4.6
13 8.4 4.0 7.2 5.4 6.2 5.7 0.0
14 5.4 4.4 4.9 4.3 4.5 4.8 4.3
15 4.5 2.9 5.9 6.2 5.3 4.6 5.4
16 11.0 14.2 8.0 10.2 12.0 11.3 10.6
17 7.8 5.2 3.9 6.3 5.2 3.6 3.9
18 10.7 9.6 7.9 7.9 8.5 8.8 10.9
19 4.4 5.5 6.2 5.1 5.4 5.8 7.2
20 4.5 7.0 6.9 5.6 5.2 4.9 4.6
21 7.7 5.8 7.8 11.2 6.5 6.6 7.7
22 10.6 9.3 6.1 7.9 7.5 9.6 14.1
23 5.1 #1762.2 7.1 3.4 3.1 4.7 8.0
24 11.3 9.3 8.6 8.8 12.0 6.6 8.0
25 3.9 4.7 5.3 5.3 5.1 5.7 5.4
26 4.8 5.0 3.5 4.5 4.1 4.3 4.5
27 6.6 7.5 5.1 5.3 6.5 7.3 9.4
28 2.8 3.5 3.9 4.1 3.0 3.6 4.1
29 6.6 6.5 6.8 6.2 6.5 7.4 7.5
31 5.1 5.2 6.6 6.0 10.1 10.4 6.9
_______________________
#Indicates deweighted satellite.
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 715 (1993 Sep 19 - Sep 25)
93 9 19 93 9 20 93 9 21 93 9 22 93 9 23 93 9 24 93 9 25
Fiducials 6.8 7.2 8.6 8.6 8.0 7.0 7.3
Total 32.4 34.1 40.9 41.5 38.3 33.9 32.1
END SITE SUMMARY TABLE
JPL GROUND STATION INCLUSION TABLE GPS week 715 (1993 Sep 19 - Sep 25)
93 9 19 93 9 20 93 9 21 93 9 22 93 9 23 93 9 24 93 9 25
site % data
ALBH 93 92 98 108 100 93 94
ALGO* 85 89 110 110 100 89 96
BRMU 85 90 89 71 99 96 71
DRAO 91 91 109 112 103 95 97
FAIR* 77 93 113 116 106 93 87
FORT 75 90 78 95 97 65 92
GOLD 59 81 96 97 90 78 83
GRAZ 94 91 108 107 100 83 0
HART* 75 83 105 107 97 82 91
HERS 92 89 106 106 96 90 90
HOBA 67 91 103 105 89 84 89
JPLM 93 90 106 106 96 93 93
KIRU 89 89 98 98 90 76 84
KOKB* 94 93 108 107 97 89 89
KOSG 93 90 107 106 100 82 0
KOUR 88 91 112 114 103 88 92
MADR* 85 80 101 96 100 90 90
MASP 82 74 103 109 102 79 84
MATE 82 84 96 96 90 81 84
MCMU 87 99 115 117 107 93 96
MDO1 89 79 96 98 90 84 86
METS 85 90 107 108 102 88 94
NLIB 90 89 99 100 86 72 54
NYAL 96 99 109 109 98 78 88
ONSA 95 91 110 110 103 95 97
PIE1 74 69 87 88 77 74 76
PINY 0 72 90 91 82 82 75
QUIN 90 83 96 95 87 79 81
RCM4 97 92 111 112 101 95 99
SANT* 95 94 105 105 96 87 91
STJO 57 83 107 108 99 89 84
TAIW 78 77 88 90 82 76 79
TIDB 34 0 75 105 97 87 91
TROM* 88 94 113 113 107 87 95
USUD 77 76 90 87 73 63 61
VNDP 95 91 109 108 98 91 92
WEST 81 86 108 110 95 89 92
WETT 91 89 102 106 97 85 0
YAR1* 78 92 108 107 97 86 92
YELL 64 93 114 114 104 82 82
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE
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