[IGSREPORT-168] JPL analysis report (0684)
David
David
Fri Mar 12 08:50:28 PST 1993
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IGS Electronic Report 12-MAR-1993 08:50:28 Message Number 168
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From: David C Jefferson
Subj: JPL analysis report (0684)
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Submitted by
J F Zumberge, G Blewitt, M B Heflin, D C Jefferson, 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
______________________________________________________________________________
jpl06847.sum This text file.
jpl06847.erp Earth rotation parameters for GPS week 684.
jpl06847.sp1 GPS ephemerides for GPS week 684, sp1 format.
jpl06847.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
As in previous weeks, data from PRN11/GPSO8 have been deweighted; orbit
repeatabilites remain at the meter-level. Also, data from PRN03/GPS11 were
deweighted for February 20 (day 051) only. As per IGSMESS.209, data from
MCMU have not been included for the entire week of analysis. Beginning
with February 14 (day 045), we are weighting data from VNDP normally. Data for
February 21 (day 052) have not yet been processed, hence the single-digit
precision in the February 20 column of the orbit repeatability table.
A-S testing was in effect beginning at 17:00 on February 20. The following
conservative measures were taken for these first results using AS data from the
new Rogue software on this day (051):
(1) data from the TurboRogue receivers at HARV, PIE1, QUIN, and VNDP were
excluded, as well as the Rogues at GRAZ, HERS, METS, and WETT;
(2) we only accepted data above 20 degrees elevation (instead of the usual
15 degrees);
(3) pseudorange data were greatly deweighted relative to the carrier phase
(relative weight ratio of 10**-8 instead of the usual 10**-4).
These measures may be loosened in future analyses, pending further investigation
into noise degradation at low elevations and into the calibration of pseudorange
biases between A/S and "normal" data, and between Rogue A/S and TurboRogue A/S.
WARNING: Data from PRN03/GPS11 and PRN11/GPS08 have been deweighted for GPS week 684.
JPL LODR TABLE GPS week 684 (1993 Feb 14 - Feb 20)
MJD LODR +/-
(ms/day)
49032.5 2.45 0.06
49033.5 2.19 0.06
49034.5 2.69 0.06
49035.5 2.46 0.06
49036.5 2.53 0.06
49037.5 2.45 0.06
49038.5 2.31 0.08
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 684 (1993 Feb 14 - Feb 20)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49032.5 .19941 .24494 -.04967 .00016 .00018 .00000 .0 .11 .00 .00 33 21 0
49033.5 .19871 .24243 -.05546 .00017 .00019 .00000 .0 .10 .00 .00 33 21 0
49034.5 .19761 .23959 -.05483 .00016 .00018 .00000 .0 .13 .00 .00 34 21 0
49035.5 .19754 .23688 -.06078 .00017 .00018 .00000 .0 .09 .00 .00 34 21 0
49036.5 .19656 .23527 -.06347 .00015 .00017 .00000 .0 .12 .00 .00 34 21 0
49037.5 .19610 .23328 -.06618 .00016 .00017 .00000 .0 .10 .00 .00 34 21 0
49038.5 .19761 .23210 -.06889 .00028 .00031 .00000 .0 .13 .00 .00 25 21 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 684:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 684 (1993 Feb 14 - Feb 20)
93 2 14 93 2 15 93 2 16 93 2 17 93 2 18 93 2 19 93 2 20
prn 3d rss (m)
1 0.39 0.46 0.27 0.24 0.35 0.73 1.4
2 0.16 0.13 0.25 0.18 0.27 0.95 0.9
3 0.20 0.24 0.21 0.32 0.32 4.12 16.9
11 1.28 1.59 1.36 1.36 1.17 1.16 2.1
12 0.44 0.74 0.51 0.45 0.48 0.89 0.5
13 0.81 0.81 0.93 0.95 0.95 0.82 0.8
14 0.36 0.24 0.28 0.47 0.73 0.65 1.1
15 0.64 0.93 0.33 0.32 0.25 0.57 0.5
16 0.34 0.21 0.33 0.26 0.12 0.65 0.9
17 0.25 0.26 0.20 0.15 0.28 1.41 1.1
18 0.14 0.12 0.21 0.30 0.32 0.46 0.4
19 0.17 0.16 0.18 0.23 0.34 0.62 1.1
20 0.62 0.53 0.46 0.52 0.67 1.98 1.3
21 0.34 0.40 0.19 0.42 0.39 1.70 1.2
23 0.40 0.28 0.29 0.34 0.52 0.93 0.6
24 0.68 0.81 0.96 0.81 0.78 1.60 0.8
25 0.62 0.77 0.56 0.47 0.37 1.42 1.2
26 0.17 0.24 0.18 0.37 0.17 0.60 0.5
27 0.24 0.18 0.22 0.20 0.19 0.39 0.9
28 0.28 0.30 0.12 0.20 0.36 0.41 0.7
29 0.61 0.38 0.62 0.68 0.57 0.60 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
93 2 14 93 2 15 93 2 16 93 2 17 93 2 18 93 2 19 93 2 20
prn 3d rss (m)
1 9.0 8.6 8.5 8.1 7.4 7.8 7.4
2 8.8 8.4 7.8 7.4 9.4 13.1 11.6
3 7.0 6.9 6.4 6.2 6.4 7.2 12.9
11 12.0 10.8 11.6 10.4 13.4 17.5 11.3
12 7.9 9.0 8.7 9.0 9.3 10.3 7.5
13 3.5 5.2 6.5 6.1 3.5 3.3 3.9
14 7.6 6.3 8.4 8.2 6.9 9.4 6.9
15 6.0 3.1 4.9 6.4 5.1 4.2 5.1
16 9.8 6.4 5.8 5.8 6.2 5.2 7.7
17 7.0 7.7 4.1 3.5 5.9 8.0 5.6
18 7.7 5.3 8.6 6.7 7.6 8.7 5.4
19 5.3 4.6 3.7 4.7 5.3 5.2 3.0
20 11.2 10.7 10.8 12.8 12.6 11.5 10.9
21 4.3 3.0 3.3 5.1 3.0 3.6 4.1
23 17.1 12.2 7.1 7.3 7.1 6.4 7.5
24 12.5 10.2 13.2 15.0 13.8 14.4 12.2
25 8.1 10.9 7.9 6.4 7.5 6.5 6.3
26 5.1 5.0 5.1 6.5 7.8 10.0 7.3
27 8.4 9.0 7.3 7.5 9.2 8.8 8.3
28 10.7 3.8 5.7 5.9 7.6 9.6 6.4
29 11.5 13.2 12.6 9.6 14.1 20.5 13.2
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
The following table, as explained in IGS Report No. 99, indicates the amount
of data from each tracking site used in this week's analysis:
JPL GROUND STATION INCLUSION TABLE GPS week 684 (1993 Feb 14 - Feb 20)
93 2 14 93 2 15 93 2 16 93 2 17 93 2 18 93 2 19 93 2 20
site % data
ALBH 103 99 103 104 104 101 85
ALGO* 84 82 93 101 102 98 57
DRAO 105 99 105 106 105 103 86
FAIR* 109 99 98 100 100 97 81
GOLD 95 94 98 98 97 100 85
GRAZ 52 47 91 102 102 97 0
HART* 104 102 105 106 105 102 86
HARV 106 98 102 102 72 25 0
HERS 100 91 104 99 94 92 0
JPLM 107 102 106 107 107 106 88
KOKB* 83 100 96 27 89 101 73
KOSG 104 98 105 103 102 88 15
KOUR 104 98 106 109 109 104 83
MADR* 85 83 97 96 96 91 76
MASP 99 91 100 102 102 96 81
MATE 100 96 102 102 101 95 84
METS 105 100 104 101 105 97 0
NYAL 0 0 49 121 121 65 14
ONSA 93 93 100 102 102 100 72
PAMA 97 96 99 99 99 98 81
PIE1 95 92 99 99 100 93 0
QUIN 91 86 88 84 89 95 0
RCM2 98 95 26 45 99 99 87
SANT* 106 98 106 106 107 106 89
STJO 98 92 99 99 99 97 81
TAIW 106 103 105 104 98 103 81
TIDB 94 91 103 102 100 99 83
TROM* 117 112 117 118 117 114 93
USUD 106 102 106 106 105 104 84
VNDP 107 102 106 107 107 105 0
WETT 97 84 97 99 103 98 0
YAR1* 106 103 107 107 108 105 27
YELL 75 97 75 109 111 99 66
_______________________
*Indicates fiducial site.
END GROUND STATION INCLUSION TABLE
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