[IGSREPORT-230] JPL Analysis Report (week 689)
G.
G.
Wed Apr 21 08:31:26 PDT 1993
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IGS Electronic Report 21-APR-1993 08:31:26 Message Number 230
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From: G. Blewitt
Subj: JPL Analysis Report (week 689)
------------------------------------
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
______________________________________________________________________________
jpl06897.sum This text file.
jpl06897.erp Earth rotation parameters for GPS week 689.
jpl06897.sp1 GPS ephemerides for GPS week 689, sp1 format.
jpl06897.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
We continue to deweight data from PRN11/GPS08; orbit repeatabilites for this
spacecraft remain at the meter-level. Also, according to the file gpsn1.txt
obtained from tycho.usno.mil, PRN25/GPS25 was scheduled unusable for up to 8
hours on March 25 (day 084), beginning at 20:15 UT (a maneuver). With this
information, and conforming to our 30-hr data processing interval, we have
chosen to deweight PRN25 on days 084 and 085. Except for March 21 and 22,
we have deweighted data for the still relatively new satellite PRN22/GPS22;
its orbit repeatabilities continue to be at the 10-100m level. (As a reminder,
there was no broadcast ephemeris data for PRN22 on Saturday, Mar 20, hence
the single-digit precision in orbit repeatability on Sunday, Mar21; see
jpl06887.sum for details.)
Data from MCMU have been excluded for the entire week of analysis in accordance
with IGS Message No. 209.
WARNING: Data from PRN11/GPS08 have been deweighted for the entire GPSweek 689.
WARNING: Data from PRN22/GPS22 have been deweighted for all of week 689 EXCEPT for days 80 and 81 (March 21,22).
WARNING: Data from MCMU have been excluded for the entire GPSweek 689.
JPL LODR TABLE GPS week 689 (1993 Mar 21 - Mar 27)
MJD LODR +/-
(ms/day)
49067.5 2.90 0.06
49068.5 2.79 0.06
49069.5 3.00 0.06
49070.5 2.74 0.06
49071.5 2.92 0.06
49072.5 2.64 0.06
49073.5 2.60 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 689 (1993 Mar 21 - Mar 27)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49067.5 .14438 .18425 -.14882 .00017 .00019 .00000 .0 .08 .00 .00 34 22 0
49068.5 .14255 .18261 -.15159 .00019 .00019 .00000 .0 .07 .00 .00 35 22 0
49069.5 .14021 .18127 -.15219 .00017 .00019 .00000 .0 .09 .00 .00 36 22 0
49070.5 .13799 .18005 -.15500 .00018 .00021 .00000 .0 .08 .00 .00 34 22 0
49071.5 .13515 .17877 -.15781 .00019 .00022 .00000 .0 .09 .00 .00 36 22 0
49072.5 .13243 .17767 -.16061 .00018 .00021 .00000 .0 .08 .00 .00 36 22 0
49073.5 .12880 .17659 -.16341 .00018 .00021 .00000 .0 .12 .00 .00 35 22 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 689:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 689 (1993 Mar 21 - Mar 27)
93 3 21 93 3 22 93 3 23 93 3 24 93 3 25 93 3 26 93 3 27
prn 3d rss (m)
1 0.26 0.40 0.34 0.59 0.38 0.26 0.13
2 0.34 0.26 0.20 0.21 0.28 0.24 0.21
3 0.40 0.29 0.38 0.30 0.39 0.43 0.38
11 #2.17 #2.49 #0.93 #0.71 #0.85 #0.98 #1.39
12 0.22 0.21 0.46 0.41 0.22 0.21 0.14
13 0.34 0.39 0.32 0.79 0.50 0.27 0.41
14 0.27 0.32 0.30 0.28 0.28 0.44 0.26
15 0.10 0.23 0.20 0.21 0.23 0.46 0.23
16 0.23 0.28 0.32 0.15 0.34 0.34 0.33
17 0.17 0.31 0.27 0.19 0.40 0.33 0.19
18 0.47 0.56 0.53 0.18 0.41 0.36 0.31
19 0.34 0.31 0.33 0.28 0.22 0.30 0.11
20 0.27 0.24 0.22 0.22 0.26 0.20 0.23
21 0.39 0.44 0.34 0.45 0.38 0.16 0.19
22 0.2 16.51 #23.66 #65.14 #90.57 #115.03 #110.94
23 0.51 0.45 0.34 0.33 0.36 0.20 0.31
24 0.28 0.42 0.49 0.36 0.34 0.34 0.21
25 0.33 0.45 0.27 194.52 #521.94 #2249.59 263.89
26 0.23 0.25 0.27 0.14 0.29 0.22 0.32
27 0.30 0.37 0.35 0.31 0.32 0.26 0.40
28 0.30 0.26 0.29 0.21 0.26 0.59 0.20
29 0.47 0.59 0.60 0.57 0.97 1.20 0.74
_______________________
#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 3 21 93 3 22 93 3 23 93 3 24 93 3 25 93 3 26 93 3 27
prn 3d rss (m)
1 10.0 10.1 8.8 9.4 9.8 10.3 10.0
2 7.6 9.0 5.2 5.7 4.5 5.5 6.5
3 7.8 8.3 8.8 9.4 11.5 9.3 8.9
11 #13.8 #4.0 #4.9 #3.8 #3.2 #4.4 #4.7
12 7.4 6.9 6.5 4.8 3.6 3.6 7.4
13 2.9 3.9 3.3 3.2 3.22 3.3 3.4
14 14.4 10.6 9.6 10.6 11.9 10.0 9.7
15 6.4 5.1 3.2 4.4 3.0 4.3 7.6
16 4.9 4.2 9.9 4.4 9.7 4.9 7.4
17 5.3 6.1 5.7 6.0 8.8 8.9 7.4
18 9.3 10.5 10.8 17.1 8.6 16.2 18.1
19 4.0 4.9 2.9 6.1 4.2 0.0 3.2
20 6.6 6.1 8.3 8.5 5.6 6.1 8.2
21 8.5 5.9 5.0 8.1 8.2 5.8 7.7
22 307.8 288.2 #118.0 #119.4 #288.1 #860.1 #465.7
23 7.5 10.3 7.4 9.2 8.9 12.6 13.9
24 5.1 4.6 4.6 2.9 3.6 4.0 5.2
25 7.7 9.5 9.9 12.3 #184.5 #3939.9 9.6
26 4.1 3.3 3.9 4.7 4.6 4.4 5.4
27 4.2 5.6 5.0 7.4 6.0 5.3 6.1
28 4.5 5.2 4.0 5.7 5.5 3.5 4.4
29 11.6 12.1 8.5 9.0 9.3 10.9 9.3
_______________________
#Indicates deweighted satellite.
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 689 (1993 Mar 21 - Mar 27)
93 3 21 93 3 22 93 3 23 93 3 24 93 3 25 93 3 26 93 3 27
site % data
ALBH 103 105 100 101 96 96 91
ALGO* 105 106 102 102 98 98 98
DRAO 103 105 102 102 98 96 95
FAIR* 101 100 98 99 93 94 98
GOLD 94 94 91 30 62 91 93
GRAZ 53 94 101 101 95 92 99
HART* 108 109 101 103 94 94 103
HERS 107 107 104 94 19 89 100
JPLM 102 98 98 100 94 95 96
KOKB* 55 28 93 103 101 100 104
KOSG 104 102 97 103 101 98 96
KOUR 101 107 95 10 0 0 0
MADR* 106 106 100 32 63 93 91
MASP 105 106 99 100 98 96 95
MATE 101 102 99 100 92 17 0
METS 110 110 106 108 100 99 106
NLIB 97 100 89 94 90 93 99
NYAL 88 123 121 122 56 63 120
ONSA 95 98 93 101 93 86 83
PAMA 102 101 98 96 94 84 18
PIE1 85 88 83 80 77 94 103
QUIN 54 16 0 0 23 98 102
RCM2 0 38 103 106 101 100 100
SANT* 110 108 106 107 103 103 106
STJO 103 102 100 103 99 100 104
TAIW 110 112 103 108 96 101 106
TIDB 107 60 103 35 65 100 105
TROM* 117 120 114 112 89 112 113
USUD 105 108 102 102 97 98 102
VNDP 100 101 99 101 97 93 99
WEST 104 102 98 97 92 92 96
WETT 72 50 48 59 78 96 102
YAR1* 112 112 91 109 102 102 109
YELL 107 108 107 107 103 102 103
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE
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