[IGSREPORT-142] JPL Analysis Report (week 681)
David
David
Tue Feb 16 00:00:00 PST 1993
From: David C Jefferson
Subject: JPL Analysis Report (week 681)
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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
______________________________________________________________________________
jpl06817.sum This text file.
jpl06817.erp Earth rotation parameters for GPS week 681.
jpl06817.sp1 GPS ephemerides for GPS week 681, sp1 format.
jpl06817.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
We continue to deweight data from PRN11/GPS08; daily repeatabilites for this
satellite remain at the meter level. Data from PRN29/GPS29 have also been
deweighted for this week's analysis. However, our orbit repeatability table
indicates that this satellite is now well-modelled. We will discontinue
deweighting data from this satellite in subsequent analyses. Furthermore,
what was PRN32 changed to PRN01 on January 28. Our files and tables for this
submission refer to this satellite as PRN32 for the entire week. For the next
submission (GPS week 682) we will refer to it as PRN01.
Two stations were deliberately removed from our analyses this week due
to anomalous data which caused post-fit residuals of phase and
pseudorange measurements to be hundreds of meters or greater. The
relevant sites and dates are:
DRAO (Penticton, B.C., Canada) - January 24 and 29 (days 024,029)
MCMU (McMurdo Bay, Antarctica) - January 29 and 30 (days 029,030)
Also, we now include data from VNDP (Vandenberg Air Force Base). Data
from this site have been deweighted for this week. The following
nominal coordinates were assumed, and the station location was estimated
(unconstrained) each day:
X = -2678071.2358 m, Y = -4525457.5680 m, Z = 3597434.3456 m
WARNING: Data from PRN's 11 and 29 (GPS08 and GPS29) have been deweighted for week 681.
JPL LODR TABLE GPS week 681 (1993 Jan 24 - Jan 30)
MJD LODR +/-
(ms/day)
49011.5 2.53 0.05
49012.5 2.24 0.05
49013.5 2.60 0.05
49014.5 2.73 0.05
49015.5 2.71 0.05
49016.5 2.70 0.05
49017.5 2.79 0.05
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 681 (1993 Jan 24 - Jan 30)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49011.5 .21286 .29655 .00289 .00013 .00014 .00000 .0 .06 .00 .00 33 21 0
49012.5 .21036 .29428 .00044 .00015 .00017 .00000 .0 -.01 .00 .00 34 21 0
49013.5 .21260 .29282 -.00200 .00013 .00015 .00000 .0 .07 .00 .00 34 21 0
49014.5 .21207 .29086 -.00445 .00014 .00015 .00000 .0 .09 .00 .00 33 21 0
49015.5 .21166 .28855 -.00690 .00014 .00016 .00000 .0 .09 .00 .00 34 21 0
49016.5 .21106 .28600 -.00935 .00014 .00016 .00000 .0 .09 .00 .00 32 21 0
49017.5 .20984 .28373 -.01180 .00014 .00017 .00000 .0 .08 .00 .00 32 21 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 681:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 681 (1993 Jan 24 - Jan 30)
93 1 24 93 1 25 93 1 26 93 1 27 93 1 28 93 1 29 93 1 30
prn 3d rss (m)
2 1.54 0.70 0.27 0.40 0.34 0.17 0.35
3 2.03 1.05 0.45 0.24 0.87 1.30 0.24
11 1.64 0.93 0.97 1.15 1.41 1.18 2.07
12 0.91 0.68 0.50 0.77 0.59 0.52 0.72
13 2.16 0.79 0.56 0.60 0.74 0.49 0.44
14 0.93 0.34 0.67 0.36 0.58 0.45 0.34
15 0.80 0.53 0.34 0.20 0.24 0.29 0.22
16 1.49 0.95 0.33 0.33 0.21 0.34 0.25
17 0.99 0.75 0.55 0.22 0.33 0.53 0.36
18 0.45 0.40 0.15 0.15 0.26 0.26 0.31
19 0.64 0.58 0.32 0.19 0.20 0.13 0.17
20 6.83 0.97 0.49 0.34 0.34 0.89 0.32
21 0.47 0.42 0.25 0.14 0.25 0.23 0.23
23 0.34 0.35 0.56 0.24 0.29 0.37 0.25
24 1.58 0.63 0.46 0.70 0.65 0.27 0.40
25 1.63 0.68 0.47 0.38 0.45 0.35 0.45
26 0.56 0.76 0.65 0.28 0.66 0.50 0.39
27 1.04 0.57 0.40 0.17 0.23 0.10 0.23
28 0.86 0.66 0.31 0.26 0.21 0.17 0.20
29 0.50 0.96 0.45 0.93 0.54 0.66 0.72
32 0.88 0.84 0.73 0.45 0.65 1.29 0.54
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 1 24 93 1 25 93 1 26 93 1 27 93 1 28 93 1 29 93 1 30
prn 3d rss (m)
2 4.7 4.0 4.2 4.1 4.9 5.7 6.1
3 8.7 8.7 9.0 8.6 7.6 7.4 7.2
11 8.8 9.9 9.52 15.6 15.7 12.3 14.3
12 14.7 8.1 9.6 10.6 5.6 9.8 11.5
13 3.0 4.0 6.5 6.2 5.5 1.7 6.6
14 7.3 8.2 5.1 7.1 6.7 6.5 5.1
15 8.0 9.4 5.9 7.3 6.9 11.3 9.3
16 3.9 3.7 3.8 5.7 4.4 5.6 4.9
17 6.7 6.2 5.6 5.7 10.8 9.3 8.9
18 3.5 8.7 6.1 5.1 11.2 13.6 8.0
19 3.6 3.6 3.7 4.1 6.5 5.7 5.0
20 6.6 7.0 6.7 7.6 10.3 6.7 9.2
21 8.6 4.6 2.5 5.9 2.4 7.8 6.5
23 5.9 5.4 4.8 5.7 5.0 5.5 6.7
24 11.9 13.0 12.9 14.9 11.6 16.1 18.4
25 5.8 4.8 5.7 4.6 5.4 5.2 6.3
26 2.7 2.3 2.3 4.3 6.0 4.7 5.1
27 14.8 13.0 10.5 12.1 11.0 14.9 16.8
28 4.8 8.3 9.0 23.2 12.5 5.0 4.6
29 26.4 24.6 23.9 22.3 17.6 17.6 16.9
32 6.1 5.7 5.7 6.6 4.5 4.4 4.3
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 681 (1993 Jan 24 - Jan 30)
93 1 24 93 1 25 93 1 26 93 1 27 93 1 28 93 1 29 93 1 30
site % data
ALBH 96 87 95 96 96 96 96
ALGO* 95 87 96 97 97 97 97
DRAO 90 98 71 51 95
FAIR* 76 71 102 98 89 102 102
GOLD 75 52 81 76 63 89 90
GRAZ 46 88 98 99 58 88 98
HART* 103 90 103 103 102 101 77
HARV 97 88 95 93 83 84 96
JPLM 98 90 78 89 97 97 94
KOKB* 96 80 104 104 100 104 96
KOSG 101 91 100 100 100 100 100
KOUR 90 89 98 97 94 95 95
MADR* 92 83 90 92 93 93 92
MASP 99 90 99 99 98 97 98
MATE 89 78 85 91 91 43 90
MCMU 102 55 10
METS 92 91 99 102 102 102 99
NYAL 43 106 110 114 86
ONSA 96 88 100 90 90 74 85
PAMA 97 86 96 96 96 95 95
PIE1 92 85 93 93 94 95 86
QUIN 93 82 90 88 87 82 97
RCM2 0 42 83 56
SANT* 99 89 97 99 98 99 100
STJO 99 89 98 98 98 98 99
TAIW 101 90 100 100 92 91 101
TIDB 92 82 90 93 91 95 95
TROM* 99 101 112 114 114 111 108
USUD 86 75 85 86 93 88 97
VNDP 0 29 30 32 31 27 27
WETT 94 85 96 85 69 91 94
YAR1* 99 91 102 102 102 101 101
YELL 102 93 103 104 104 105 105
_______________________
*Indicates fiducial site.
END GROUND STATION INCLUSION TABLE
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