[IGSREPORT-0822] JPL Analysis Report (week 737)
David
David
Fri Mar 4 11:55:25 PST 1994
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IGS Electronic Report Fri Mar 4 11:55:25 PST 1994 Message Number 0822
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Author: David C. Jefferson
Subject: JPL Analysis Report (week 737)
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JPL ANALYSIS REPORT GPS-WEEK 0737 (DAYS 51-57, DATES 1994 Feb 20 - Feb 26)
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Submitted by the JPL IGS/FLINN Analysis Team:
J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb
all at the Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA 91109.
Files listed below are available in Unix compressed format and can be
retrieved using anonymous ftp to sideshow.jpl.nasa.gov (128.149.70.41),
directory pub/jpligsac/0737. These files have also been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl07377.sum This text file.
jpl07377.erp Earth rotation parameters for GPS week 737.
jpl0737[0-6].sp3 GPS ephemerides for GPS week 737, sp3 format.
______________________________________________________________________________
Anti-spoofing has been in effect since day 031 (Jan 31). All analyses were
done using our current A-S strategy; see jpl07347.sum for details.
According to IGS Mail Message #510, "ALGO Domes # 40104M002 was down from Feb
23 (DOY 54) 12:00 UT to Feb 25 (DOY 56) 14:00 UT." For these three days, FAIR
was used as the reference frequency standard instead of ALGO. Also, ALGO was
not used as a fiducial during this period.
This week's analysis includes the processing of data from two new global
network stations: AREQ (Arequipa, Peru) and TSKB (Tsukuba, Japan). The
following nominal coordinates were assumed, and the station locations were
estimated (unconstrained) each day:
AREQ: X = 1942790.4000 m, Y = -5804032.5000 m, Z = -1796910.7000 m
TSKB: X = -3957197.5268 m, Y = 3310201.2519 m, Z = 3737714.9041 m
Beginning this week, we have changed the method of calculating percentages
of data used in our Ground Station Inclusion Table. Previously, these values
were calculated based on a fixed number of expected measurements per site,
which was arrived at by monitoring trends in several weeks of analyses (see
jpl06787.sum for original details). We now calculate this number on a daily
basis according to the following semi-empirical formula:
(1 - sin k) D
m = 0.227 * T * ------------- * --- * d ,
(1 - sin 15) t
where T is the number of satellites, k is the elevation cutoff in degrees,
D is the total data arc, t is the decimation interval, and d the number of data
types. [As a reminder, for our AS strategy, k = 20 degrees and d = 1 (phase
only)].
WARNING: FAIR (not ALGO) was used as the reference clock for days 054-056.
WARNING: ALGO was not used as a fiducial (constrained) site for days 054-056.
JPL LODR TABLE GPS week 737 (1994 Feb 20 - Feb 26)
MJD LODR +/-
(ms/day)
49403.5 2.24 0.01
49404.5 2.30 0.02
49405.5 2.36 0.01
49406.5 2.45 0.01
49407.5 2.49 0.01
49408.5 2.62 0.02
49409.5 2.68 0.01
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 737 (1994 Feb 20 - Feb 26)
MJD X Y UT1R-UTC XSIG YSIG UTSIG RMS XYC XUC YUC STA SAT PASS
'' '' sec '' '' sec
49403.5 .12744 .45090 .06949 .00011 .00012 .00000 .0 .13 .00 .00 41 26 0
49404.5 .13024 .45056 .06681 .00013 .00014 .00000 .0 .02 .00 .00 45 26 0
49405.5 .13302 .44982 .06413 .00010 .00012 .00000 .0 .05 .00 .00 41 26 0
49406.5 .13578 .44988 .06144 .00009 .00010 .00000 .0 .06 .00 .00 42 26 0
49407.5 .13830 .44989 .05876 .00010 .00011 .00000 .0 .08 .00 .00 42 26 0
49408.5 .13981 .44917 .05608 .00012 .00014 .00000 .0 .05 .00 .00 40 26 0
49409.5 .14099 .44842 .05340 .00011 .00011 .00000 .0 .08 .00 .00 38 26 0
END UTPM TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 737:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 737 (1994 Feb 20 - Feb 26)
94 2 20 94 2 21 94 2 22 94 2 23 94 2 24 94 2 25 94 2 26
prn 3d rss (m)
1 0.86 0.35 0.47 0.71 0.82 0.49 0.86
2 0.80 0.69 0.71 1.04 0.77 1.07 1.00
3 0.50 0.52 0.63 0.55 0.53 0.63 0.43
4 0.62 0.74 0.33 0.77 0.40 0.81 0.68
5 1.29 1.12 0.81 0.96 0.97 1.10 0.91
7 0.57 0.73 0.61 0.75 0.63 0.89 1.02
9 0.48 0.59 0.38 0.38 0.33 0.76 0.73
12 0.56 0.58 0.33 0.24 0.29 0.71 0.65
13 0.92 0.72 0.48 0.53 0.59 0.88 0.98
14 1.44 1.24 1.17 1.14 0.68 0.70 1.60
15 0.51 0.40 0.40 0.39 0.38 0.63 0.66
16 1.54 1.40 1.31 0.97 0.64 1.50 1.96
17 0.61 0.78 0.57 0.62 0.57 0.97 0.93
18 0.47 0.52 0.53 0.52 0.57 0.82 1.25
19 0.60 0.34 0.32 0.46 0.26 0.69 0.72
20 0.98 0.83 0.54 0.48 0.77 1.15 1.11
21 0.68 0.60 0.41 0.84 0.92 0.61 0.83
22 0.97 1.00 0.93 0.64 1.14 1.53 1.41
23 0.79 1.03 0.91 1.00 0.85 0.98 0.70
24 0.61 0.43 0.45 0.70 0.24 0.77 0.45
25 1.05 1.00 1.18 0.48 0.57 1.92 1.60
26 0.83 0.69 0.79 0.72 0.39 0.81 0.67
27 0.29 0.49 0.49 0.37 0.32 0.81 0.85
28 0.84 0.85 1.05 0.86 0.61 0.94 1.4
29 0.37 0.67 0.71 0.60 0.61 0.77 0.70
31 0.74 0.93 0.75 0.65 0.63 0.76 1.02
_______________________
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
94 2 20 94 2 21 94 2 22 94 2 23 94 2 24 94 2 25 94 2 26
prn 3d rss (m)
1 9.5 8.4 7.9 7.4 8.3 9.0 8.4
2 9.8 10.2 7.8 7.1 7.7 11.1 5.7
3 9.6 11.7 12.4 14.1 12.7 11.7 11.9
4 14.9 15.2 13.7 13.3 11.6 11.2 10.1
5 11.0 9.3 8.8 7.6 6.5 7.4 8.7
7 5.6 5.7 5.6 4.9 4.3 4.2 3.3
9 5.1 4.8 4.2 5.0 5.8 4.7 3.8
12 2.8 3.1 4.3 5.1 8.2 7.8 7.2
13 3.3 4.7 5.2 3.5 5.0 6.0 2.8
14 6.2 7.4 7.3 7.1 8.6 5.1 8.5
15 3.9 2.6 3.8 3.2 3.3 3.8 4.2
16 9.2 6.6 6.2 9.5 10.1 6.1 4.7
17 3.9 4.8 4.2 4.1 5.5 3.8 4.4
18 6.7 10.8 4.3 10.0 9.2 8.0 6.0
19 5.4 4.7 6.7 6.5 5.1 7.1 7.4
20 4.2 4.6 5.3 5.0 4.9 4.7 4.5
21 7.9 8.1 8.6 8.1 8.2 4.1 3.3
22 9.3 8.2 9.6 8.0 5.9 14.7 3.6
23 19.1 15.4 15.0 17.0 19.7 21.6 20.3
24 5.6 7.9 9.4 9.0 8.8 7.2 5.2
25 4.3 5.2 5.4 6.1 4.8 5.3 7.5
26 3.0 3.1 3.5 3.4 3.2 3.4 3.5
27 7.5 8.7 10.4 9.0 7.4 7.2 6.3
28 5.8 3.6 3.7 3.9 4.2 3.7 3.4
29 4.6 4.4 4.8 4.2 2.8 2.6 2.7
31 4.9 5.0 5.1 4.8 4.2 5.1 4.2
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
The following tables, as explained in IGS Report Nos. 99 and 295, indicate the
amount of global network tracking data used in this week's analysis:
JPL SITE SUMMARY TABLE (no. stations) GPS week 737 (1994 Feb 20 - Feb 26)
94 2 20 94 2 21 94 2 22 94 2 23 94 2 24 94 2 25 94 2 26
Fiducial 10.4 9.9 9.4 9.4 8.7 8.9 10.1
Total 34.7 37.5 35.6 35.8 34.7 31.4 29.3
END SITE SUMMARY TABLE
JPL GROUND STATION INCLUSION TABLE GPS week 737 (1994 Feb 20 - Feb 26)
94 2 20 94 2 21 94 2 22 94 2 23 94 2 24 94 2 25 94 2 26
site % data
ALBH 105 105 106 95 107 106 103
ALGO* 104 94 93 51 0 44 101
AREQ 0 107 0 0 0 0 0
BRMU 85 89 91 86 96 85 85
DRAO 108 108 108 97 109 109 98
FAIR* 84 77 74 80 79 64 71
FORT 0 98 99 102 44 91 94
GODE 99 99 100 102 101 101 98
GOLD^ 89 88 79 80 82 75 77
GRAZ 82 78 78 82 92 75 0
HART* 69 66 92 85 80 52 86
HERS 83 79 0 84 79 49 72
HOBA 103 102 98 97 88 97 101
JPLM 85 82 77 90 76 76 67
KIRU 105 102 101 104 94 0 0
KOKB* 84 87 99 99 77 78 72
KOSG* 93 25 0 0 0 0 10
KOUR 95 99 98 98 89 0 0
MADR* 79 83 75 37 29 67 68
MASP 92 97 99 100 90 0 0
MATE 71 65 62 42 51 60 0
MCMU 24 92 96 95 96 83 64
MDO1 105 104 107 104 103 83 86
METS 80 71 85 86 88 85 82
NLIB 75 85 88 85 85 78 44
NYAL 105 111 111 112 112 110 108
ONSA 91 101 91 0 85 83 0
PAMA 86 86 89 90 84 72 83
PIE1 92 96 102 103 103 101 98
QUIN 92 101 82 95 104 105 101
RCM5 101 97 94 104 104 73 17
SANT* 88 86 80 78 82 73 72
STJO 99 102 102 102 100 85 80
TAIW 80 70 86 88 84 92 72
TIDB* 85 81 74 73 76 70 90
TROM* 0 60 105 107 107 105 102
TSKB 0 33 82 108 106 106 104
USUD 105 108 103 102 98 95 94
VNDP 82 93 88 82 31 52 71
WEST 103 100 100 102 103 100 100
WETT* 80 65 0 73 80 76 72
YAR1* 86 70 77 84 81 83 89
YELL* 100 104 93 96 98 102 101
_______________________
*Indicates fiducial site; #indicates deweighted site.
^GOLD used as a fiducial for days 051-053, 057 only.
END GROUND STATION INCLUSION TABLE
As described in IGS Report No. 634, the table below indicates the repeatability
of clock solutions for all satellites and stations used in this week's analysis:
JPL CLOCK REPEATABILITY TABLE GPS week 737 (1994 Feb 20 - Feb 26)
94 2 20 94 2 21 94 2 22 94 2 23 94 2 24 94 2 25 94 2 26
comp log10(rms/ps)
PRN01 4 4.1 6 4 3.6 8.2 8.2
PRN02 4.1 3.9 6 4 5.7 8.2 8.2
PRN03 4.2 4.5 6 4 5.1 8.2 8.2
PRN04 4.1 4.2 6 4 5.3 8.2 8.2
PRN05 4.0 4.3 6 4 5.4 8.2 8.2
PRN07 3.8 4.0 6 4 5.5 8.2 8.2
PRN09 4.2 4.2 6 4 5.7 8.2 8.2
PRN12 4.4 4.0 6 3 5.4 8.2 8.2
PRN13 4.5 4.4 6 4 5.3 8.2 8.2
PRN14 4.2 4.0 6 4 4.1 8.2 8.2
PRN15 3.7 4.4 6 5 5.5 8.2 8.2
PRN16 4.0 4.3 6 4 5.2 8.2 8.2
PRN17 4.4 4.4 5 4 4.9 8.2 8.2
PRN18 4.0 4.2 6 3 3.7 8.2 8.2
PRN19 3.9 3.8 6 3 5.1 8.2 8.2
PRN20 4.0 4.2 6 4 5.2 8.2 8.2
PRN21 3.8 4.3 6 3 4.9 8.2 8.3
PRN22 4.2 4 6 3 3.9 8.3 8.2
PRN23 3.9 3.9 6 3 5.1 8.2 8.2
PRN24 4.2 4.3 6 4 5.2 8.2 8.2
PRN25 3.9 4 6 4 3.4 8 8.2
PRN26 4.0 3.9 6 3 5.1 8.2 8.2
PRN27 3.6 3.9 6 3 5.4 8.2 8.2
PRN28 3.8 4 6 3 4.7 8 8
PRN29 4.1 4.3 6 4 4.9 8.2 8.2
PRN31 3.8 3.8 6 4 4.9 8.2 8.2
ALBH 3.6 4.0 6 4 5 8.2 8.2
BRMU 3.4 3.6 6 4 4.9 8.2 8.2
CANB 4.1 4.3 6 4 5.0 8.2 8.2
FAIR 4.0 3.9 4
FORT 4 6 4 4 8.2 8.2
GODE 3.7 3.9 6 4 5.0 8.2 8.2
GOLD 3.9 4.1 6 3 5.4 8.2 8.2
GRAZ 4 4.2 6 4 3.9 5
HART 4 4 6 4 3.8 8 8.2
HARV 3.8 4.0 6 4 5.2 8.2 8.2
HERS 3.8 3 4 5.2 8.2 8.2
HOBA 4.2 4.3 6 4 5.2 8.2 8.2
JPLM 3.6 3.9 6 4 5.4 8.2 8.2
KIRU 4 3.9 6 4 4
KOKB 4.3 4.0 6 3 4.3 8.2 8.2
KOSG 3.7 4 4
KOUR 4.1 4.1 6 4 3
MADR 3.6 3.8 6 5 8.2 8.2
MASP 4.0 4.2 6 4 4
MATE 4 4.0 6 5 5
MCMU 4 4.2 6 4 5.2 8.2 8
MDO1 3.5 4.0 6 4 5.4 8.2 8.2
METS 3.8 4.2 6 4 4.3 8.2 8.2
NALL 3.7 4.1 6 3 5.3 8.2 8.2
NLIB 3.9 3.8 7 4 6.8 8.2 8
ONSA 3.7 4 5 6
PAMA 4.4 4.4 6 4 5.3 8.2 8.2
PENT 3.7 4.1 6 4 5 8.2 8.2
PIE1 3.5 3.8 6 4 5.4 8.2 8.2
QUIN 3.5 3.9 6 3 5.2 8.2 8.2
RCM5 3.9 4.1 6 4 4.8 6 4
SANT 3.9 4.2 6 3 5.3 8.2 8.2
STJO 4.3 4.1 6 4 5.1 6 8.2
TAIS 4 4.3 6 4 5.4 8.2 8
TROM 4 6 3 4.2 8.2 8.2
TSKB 6 4 4.7 8.2 8.2
USUD 4.0 4.1 6 4 4.7 8.2 8.2
VNDP 3.9 4.1 6 4 3 8 8.2
WEST 3.6 4.0 6 4 4.9 8.2 8.2
WETB 3.7 4 4 4.9 8.2 8.3
YAR1 4.1 4.3 6 4 5.4 8.2 8.2
YELL 3.9 4.0 6 4 5.4 8.2 8.2
_______________________
END CLOCK REPEATABILITY TABLE
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