[IGSREPORT-292] JPL Analysis Report (week 693)
G.
G.
Tue May 25 09:34:12 PDT 1993
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IGS Electronic Report 25-MAY-1993 09:34:12 Message Number 292
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From: G. Blewitt
Subj: JPL Analysis Report (week 693)
------------------------------------
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
______________________________________________________________________________
jpl06937.sum This text file.
jpl06937.erp Earth rotation parameters for GPS week 693.
jpl06937.sp1 GPS ephemerides for GPS week 693, sp1 format.
jpl06937.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
We continue to deweight data from PRN22/GPS22. Beginning this week, we have
included data from the new satellite PRN31/GPS31, launched March 30, 1993.
Following our usual practices, we have deweighted data from this satellite
for the entire week of analysis. Also, according to the file gpsn2.txt
obtained from tycho.usno.navy.mil, PRN01/GPS32 was unusable from 09:27 to 19:21
UT on day 112 (April 22). Because of this, we found it necessary to deweight
data from this satellite for days 112 AND 113.
As reported in gpstd.txt, also obtained from tycho.usno.navy.mil, "A-S testing
occurred during the period 19 Apr 0000 UT to 24 Apr 0000 UT". Days 109 through
114 included all cross-correlated data, and were analyzed using our AS
processing strategy (see jpl06867.sum). AS has adversely affected our GPS orbit
repeatabilites, causing them to be an order of magnitude or so larger than
normal.
Due to the atypically small amount of data available from ALGO on day 113
(April 23), we have changed our reference clock to FAIR (Fairbanks, Alaska)
for that day ONLY.
WARNING: Due to the maneuver of PRN01/GPS32, data from this satellite have
been deweighted for days 112 and 113 (April 22 and 23).
WARNING: Data from PRN22/GPS22 have been deweighted for the entire GPSweek 692.
WARNING: Data from PRN31/GPS31 have been deweighted for the entire GPSweek 692.
WARNING: FAIR (instead of ALGO) was used as the reference clock for day 113.
JPL LODR TABLE GPS week 693 (1993 Apr 18 - Apr 24)
MJD LODR +/-
(ms/day)
49095.5 2.97 0.06
49096.5 3.62 0.06
49097.5 3.69 0.06
49098.5 2.70 0.06
49099.5 2.90 0.06
49100.5 3.14 0.06
49101.5 2.49 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 693 (1993 Apr 18 - Apr 24)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49095.5 .06969 .16437 -.22392 .00018 .00023 .00000 .0 .04 .00 .00 32 23 0
49096.5 .06732 .16552 -.22658 .00020 .00021 .00000 .0 -.06 .00 .00 33 23 0
49097.5 .06361 .16367 -.22923 .00020 .00021 .00000 .0 -.08 .00 .00 37 23 0
49098.5 .06074 .16450 -.23187 .00019 .00021 .00000 .0 -.06 .00 .00 37 23 0
49099.5 .06355 .16613 -.23449 .00020 .00021 .00000 .0 -.08 .00 .00 38 23 0
49100.5 .05813 .15824 -.23710 .00021 .00023 .00000 .0 -.07 .00 .00 37 23 0
49101.5 .05424 .16376 -.23971 .00020 .00020 .00000 .0 -.09 .00 .00 34 23 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 693:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 693 (1993 Apr 18 - Apr 24)
93 4 18 93 4 19 93 4 20 93 4 21 93 4 22 93 4 23 93 4 24
prn 3d rss (m)
1 1.49 3.90 5.65 2723.49 #3384.32 #4051.88 9.34
2 0.84 2.48 2.35 2.24 1.64 2.44 3.50
3 1.40 4.32 4.61 2.67 3.67 3.32 2.52
11 1.34 2.04 2.66 2.07 1.16 1.48 2.48
12 1.83 1.70 2.08 2.04 2.18 4.21 2.48
13 1.22 1.40 1.94 1.60 1.72 1.03 1.74
14 4.22 4.34 3.04 5.26 5.64 3.65 2.65
15 1.80 2.82 6.08 2.85 4.86 3.52 2.31
16 2.75 2.54 3.56 2.93 5.96 7.19 3.41
17 3.53 7.88 8.92 11.26 4.23 8.20 7.26
18 0.91 2.21 2.92 3.88 5.01 3.07 1.77
19 1.68 4.83 4.98 5.14 5.94 2.93 4.72
20 1.47 1.76 4.96 6.15 6.54 3.31 2.83
21 0.78 5.46 5.05 4.99 2.55 3.55 7.78
22 #6.2 #2.28 #2.79 #3.81 #2.28 #4.77 #9.48
23 1.50 1.49 5.71 5.48 2.03 6.94 5.91
24 1.42 1.70 1.94 5.62 5.20 3.41 2.19
25 1.53 2.71 4.44 7.57 6.87 3.85 1.02
26 1.02 1.64 2.90 3.51 4.36 5.47 3.28
27 2.17 1.97 2.34 4.34 1.66 3.34 3.33
28 1.17 2.26 2.56 2.74 4.85 4.96 4.07
29 2.66 1.86 1.74 4.66 5.39 3.12 1.30
31 #61.3 #30.03 #39.82 #8.71 #16.38 #31.21 #8.52
_______________________
#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 4 18 93 4 19 93 4 20 93 4 21 93 4 22 93 4 23 93 4 24
prn 3d rss (m)
1 13.6 17.3 29.6 74530.6 #3156.4 #13.8 7.3
2 3.2 3.4 5.1 6.5 5.5 2.6 3.2
3 12.6 11.8 11.3 10.2 10.4 9.8 13.2
11 5.6 6.0 6.1 6.3 4.5 6.7 6.2
12 6.4 5.2 7.2 5.0 4.9 7.2 2.9
13 4.1 4.8 7.7 5.4 7.6 8.3 3.5
14 4.8 3.9 5.8 10.2 3.9 5.1 7.3
15 4.1 4.4 9.2 9.4 6.3 5.5 5.8
16 5.4 6.1 3.8 5.9 4.9 4.8 5.7
17 8.9 11.9 9.0 8.7 9.4 9.4 11.7
18 9.7 17.0 9.6 10.9 11.7 13.2 13.7
19 4.7 3.0 5.7 3.1 7.3 5.3 4.5
20 11.5 12.0 11.4 6.3 6.3 10.1 8.0
21 5.4 3.9 5.9 5.1 5.2 3.6 5.2
22 #2.1 #3.0 #2.5 #2.6 #2.1 #1.9 #2.7
23 7.9 3.4 4.0 6.1 7.8 10.7 6.4
24 7.5 7.3 6.8 6.1 7.2 10.4 7.1
25 8.9 9.9 11.2 10.3 8.3 8.8 7.4
26 7.1 9.7 9.4 6.6 5.7 5.8 5.2
27 5.6 6.5 3.8 5.5 4.8 5.4 3.8
28 5.0 6.0 7.9 8.5 8.1 6.5 5.5
29 10.5 13.2 12.9 10.6 6.0 11.8 12.4
31 #6.3 #31.5 #17.5 #2.6 #10.1 #7.2 #4.0
_______________________
#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 693 (1993 Apr 18 - Apr 24)
93 4 18 93 4 19 93 4 20 93 4 21 93 4 22 93 4 23 93 4 24
site % data
ALBH 99 89 90 87 85 82 90
ALGO* 84 88 93 95 92 48 90
DRAO 102 92 93 91 88 89 94
FAIR* 96 91 92 92 88 88 92
GOLD 94 90 86 83 78 70 76
GRAZ 100 97 95 97 90 90 98
HART* 99 95 94 94 88 85 90
HERS 0 0 83 90 85 84 61
HOBA 0 0 63 82 76 58 0
JPLM 66 53 81 33 0 22 23
KOKB* 99 93 90 92 92 91 95
KOSG 102 90 95 94 91 90 97
KOUR 99 93 92 93 88 88 94
MADR* 100 93 91 92 72 63 74
MASP 98 95 91 92 91 93 95
MATE 0 0 72 84 76 83 92
MCMU 0 98 109 107 105 102 108
METS 96 95 92 93 85 76 0
NLIB 60 79 75 75 77 53 85
NYAL 108 102 101 100 55 0 0
ONSA 105 98 96 98 93 87 93
PAMA 95 91 87 88 86 85 93
PIE1 101 92 95 95 91 89 96
QUIN 102 93 91 86 85 85 90
RCM2 101 84 83 86 87 82 22
SANT* 102 99 99 99 95 90 97
STJO 103 90 90 93 88 84 93
TAIW 0 83 93 94 87 84 93
TIDB 91 94 82 92 87 86 99
TROM* 87 68 103 102 96 98 105
USUD 32 0 0 0 66 85 95
VNDP 96 84 91 91 82 86 92
WEST 103 92 91 93 81 0 0
WETT 0 0 46 50 54 68 84
YAR1* 86 96 92 82 86 91 60
YELL 107 91 92 87 76 90 96
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE
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