[IGSREPORT-202] JPL Comparisons
David
David
Tue Apr 6 08:39:35 PDT 1993
***********************************************************************
IGS Electronic Report 6-APR-1993 08:39:35 Message Number 202
***********************************************************************
From: David C Jefferson
Subj: JPL Comparisons
-----------------------
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
______________________________________________________________________________
jpl06877.sum This text file.
jpl06877.erp Earth rotation parameters for GPS week 687.
jpl06877.sp1 GPS ephemerides for GPS week 687, sp1 format.
jpl06877.sp3 " " " " " " , sp3 " .
______________________________________________________________________________
______________________________________________________________________________
We continue to deweight data from PRN11/GPSO8; orbit repeatabilites for this
spacecraft remain at the meter-level. Except for March 8 and March 9, data from
PRN22/GPS22 have again been deweighted, as it is a relatively new satellite.
On days when PRN22 is poorly modelled, as measured by orbit repeatability, LODR values get skewed. On days when this satellite is well modelled (like March 8th
and 9th), LODR has a reasonable estimate.
Data from MCMU and FAIR have been excluded for the entire week of analysis
in accordance with IGS Message Nos. 209 and 212. Also, we have excluded
data from DRAO for all days except March 13 (day 72), as a replacement clock
has been installed at that site (see IGSMESS.217). As in last week's analysis,
we have again deweighted data from the new site NLIB.
WARNING: Data from PRN11/GPSO8 have been deweighted for the entire GPSweek 687.
WARNING: Data from PRN22/GPS22 have been deweighted for all days EXCEPT days 067 and 068 (March 8 and 9).
WARNING: Data from FAIR and MCMU have been excluded for the entire GPSweek 687.
WARNING: Data from DRAO have been excluded for all days EXCEPT day 072 (Mar 13).
JPL LODR TABLE GPS week 687 (1993 Mar 07 - Mar 13)
MJD LODR +/-
(ms/day)
49053.5 2.58 0.06
49054.5 2.70 0.06
49055.5 2.17 0.06
49056.5 2.70 0.06
49057.5 2.47 0.06
49058.5 2.71 0.06
49059.5 2.76 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 687 (1993 Mar 07 - Mar 13)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49053.5 .16715 .20586 -.11001 .00017 .00020 .00000 .0 .07 .00 .00 33 22 0
49054.5 .16546 .20370 -.11277 .00015 .00017 .00000 .0 .09 .00 .00 33 22 0
49055.5 .16421 .20167 -.11554 .00015 .00017 .00000 .0 .10 .00 .00 33 22 0
49056.5 .16384 .20027 -.11831 .00016 .00018 .00000 .0 .11 .00 .00 32 22 0
49057.5 .16360 .19886 -.12108 .00017 .00019 .00000 .0 .08 .00 .00 33 22 0
49058.5 .16310 .19716 -.12385 .00016 .00019 .00000 .0 .11 .00 .00 33 22 0
49059.5 .16216 .19604 -.12663 .00016 .00018 .00000 .0 .10 .00 .00 33 22 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 687:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 687 (1993 Mar 07 - Mar 13)
93 3 7 93 3 8 93 3 9 93 3 10 93 3 11 93 3 12 93 3 13
prn 3d rss (m)
1 0.94 0.41 0.63 0.64 0.27 0.29 0.43
2 0.29 0.33 0.36 0.27 0.33 0.46 0.34
3 0.27 0.33 0.41 0.29 0.38 0.48 0.31
11 #0.94 #0.97 #2.47 #2.13 #2.27 #1.21 #1.67
12 0.37 0.42 0.35 0.53 0.46 0.27 0.37
13 0.27 0.28 0.45 0.58 0.92 0.49 0.33
14 8.77 0.29 0.49 0.47 0.50 0.34 0.54
15 0.15 0.11 0.33 0.28 0.20 0.28 0.30
16 0.34 0.34 0.66 0.29 0.22 0.32 0.32
17 0.29 0.48 0.24 0.24 0.28 0.24 0.11
18 0.39 0.37 0.74 0.42 0.43 0.44 0.46
19 0.25 0.26 0.28 0.20 0.26 0.50 0.24
20 0.80 0.49 0.39 0.28 0.44 0.55 0.54
21 0.60 0.45 0.42 0.42 0.44 0.47 0.42
22 #90.71 60.36 32.09 #56.26 #83.22 #48.34 #38.31
23 0.77 0.68 0.83 0.81 0.91 0.89 0.33
24 0.55 0.32 0.41 0.34 0.33 0.45 0.35
25 0.33 0.35 0.58 0.73 0.68 0.28 0.30
26 0.34 0.23 0.21 0.34 0.21 0.32 0.17
27 0.28 0.28 0.36 0.29 0.49 0.52 0.27
28 0.22 0.28 0.40 0.17 0.30 0.26 0.22
29 0.36 0.53 0.84 0.68 0.67 0.73 0.81
_______________________
#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 7 93 3 8 93 3 9 93 3 10 93 3 11 93 3 12 93 3 13
prn 3d rss (m)
1 12.3 11.3 11.6 11.5 10.1 11.0 10.7
2 6.3 5.6 4.6 5.4 5.2 9.8 6.2
3 8.3 8.8 9.3 7.1 7.8 4.6 5.8
11 #9.1 #5.1 #11.9 #18.97 #7.2 #4.8 #7.9
12 11.8 7.5 5.7 16.8 14.2 10.4 25.9
13 2.1 2.6 3.2 4.1 5.2 4.5 3.7
14 10.2 12.9 15.8 14.0 7.3 7.3 10.7
15 5.2 7.8 7.0 13.9 4.0 4.3 3.1
16 6.0 4.1 6.2 5.7 5.3 4.1 5.0
17 4.0 2.9 4.6 10.9 12.5 3.5 4.9
18 8.5 8.1 8.3 11.9 10.4 10.3 10.4
19 5.3 3.9 4.1 8.0 3.5 3.2 4.2
20 7.7 5.5 6.1 5.9 5.5 5.1 4.6
21 11.6 14.7 11.2 11.2 8.3 9.5 11.7
22 #660.7 731.5 665.0 #720.4 #178.2 #141.7 #103.6
23 12.6 21.4 16.6 24.6 27.1 13.2 13.9
24 8.0 6.2 8.5 9.3 5.8 3.2 3.5
25 8.0 8.7 7.7 7.2 5.6 4.1 10.6
26 6.0 5.6 4.8 7.9 5.8 4.5 4.7
27 7.4 6.2 6.7 5.8 4.6 4.0 3.3
28 10.5 5.6 10.0 6.9 11.0 3.4 5.9
29 14.4 15.8 13.2 14.0 9.8 9.7 13.5
_______________________
#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 687 (1993 Mar 07 - Mar 13)
93 3 7 93 3 8 93 3 9 93 3 10 93 3 11 93 3 12 93 3 13
site % data
ALBH 101 102 102 101 100 101 101
ALGO* 100 102 105 90 96 102 102
DRAO 0 0 0 0 0 0 103
GOLD 95 96 98 94 30 66 86
GRAZ 92 107 107 101 102 101 101
HART* 99 111 110 103 103 103 104
HERS 104 106 105 99 100 103 100
JPLM 103 107 78 0 35 103 105
KOKB* 104 107 107 104 106 106 106
KOSG 103 110 108 104 105 103 105
KOUR 105 112 112 109 109 112 111
MADR* 100 108 105 99 33 63 83
MASP 93 94 95 94 95 95 96
MATE 98 92 89 98 99 98 99
METS 80 65 110 105 106 105 106
NLIB #10 #8 #38 #102 #100 #99 #99
NYAL 113 125 123 120 119 115 44
ONSA 85 91 100 94 94 105 101
PAMA 96 102 102 98 97 97 97
PIE1 91 94 94 90 90 91 92
QUIN 90 81 96 78 77 29 0
RCM2 101 108 97 103 105 101 96
SANT* 107 106 110 109 109 109 107
STJO 97 106 107 102 98 97 103
TAIW 83 104 100 96 98 97 104
TIDB 96 99 101 100 35 69 103
TROM* 108 114 115 111 112 112 114
USUD 97 102 108 102 104 106 106
WEST 100 98 99 96 92 84 17
WETT 98 105 103 96 81 21 31
YAR1* 68 91 112 109 109 109 108
YELL 106 108 112 107 107 105 105
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE
More information about the IGSREPORT
mailing list