[IGSREPORT-3054] Wk 0873 JPL Analysis Report
D
D
Thu Oct 10 14:52:46 PDT 1996
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IGS Electronic Report Thu Oct 10 14:52:46 PDT 1996 Message Number 3054
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Author: D C Jefferson
Subject: Wk 0873 JPL Analysis Report
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JPL ANALYSIS REPORT GPS-WEEK 0873 (DAYS 273-279, DATES 1996 Sep 29 - Oct 05)
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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/0873. These files have also been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl08737.sum This text file.
jpl08737.erp Earth rotation parameters for GPS week 873.
jpl08737.snx Ground station coordinates for GPS week 873, SINEX format.
jpl0873[0-6].sp3 GPS ephemerides for GPS week 873, sp3 format.
______________________________________________________________________________
Median Orbit Repeatability (see table below): 19.0 cm
STRATEGY UPDATE
---------------
Since GPS week 870, we have been excluding data from PRN10 in our analyses
(see jpl8707.sum). Beginning this week, we begin to use data from this
satellite again; however, the data are heavily deweighted (we have used this
strategy in the past). Doing so prevents mismodeling of this satellite from
affecting other estimated parameters. At the same time, its performance
(orbit repeatability statistics, etc.) can still be monitored.
Please note that we have treated the newly-launched PRN30 in a similar manner.
However, due to implementation time and some initial software anomalies, some
days included data from the two new satellites using normal weighting. These
are PRN30 on day 273, and PRN10 on day 279. As the orbit repeatability
statistics show, these satellites were mismodeled on these days, and have
been moved from the corresponding sp3 files (jpl08730.sp3 and jpl08736.sp3)
accordingly.
GENERAL
-------
According to the file nanu1996.mes obtained from the IGS CBIS, PRN18 was
scheduled unusable on day 275 for maintenance and repositioning. Data from
this satellite did not meet our convergence criteria on this nor the previous
day (274), and have been excluded from our analyses of both days. Data from
PRN30 was similarly excluded on these days, also having convergences in excess
of our criteria.
Also, according to IGS Mail Message No. 1451, the antenna change for MADR
scheduled on day 270 (see IGS Mail No. 1440) actually occured on day 278.
This station was NOT used as a fiducial (constrained) site in the analyses
of days 273 through 278.
Lastly, beginning this week, we add one new candidate station. As with most
stations, this site is given the opportunity to participate in the orbit and
clock solution as the global site distribution varies. The following nominal
coordinates were assumed:
X (m) Y (m) Z (m)
HRAO (Hartebeesthoek RAO, 5085353.0467 2668424.4571 -2768705.3570
Krugersdorp, South Africa)
Due to potential problems, data from stations mentioned below were not
considered for use in the global solution for the day indicated. (For
geographical reasons, they may not have been used in any case.)
WARNING: Data from PRN10 deweighted days 273-278.
WARNING: Data from PRN18 excluded days 274 and 275 due to a maneuver.
WARNING: Data from PRN30 excluded days 274 and 275; deweighted days 276-279.
WARNING: MADR not used as a fiducial days 273-278 due to an antenna change.
WARNING: Data from CASA, CMBB excluded day 273.
WARNING: Data from CASA, KRAK, TROM excluded day 274.
WARNING: Data from BOGT, CASA, DGAR, XIAN excluded day 275.
WARNING: Data from CAS1, TROM excluded day 276.
WARNING: Data from DGAR, GUAM, TROM excluded day 277.
WARNING: Data from DGAR, GUAM, PIN1, POTM excluded day 278.
WARNING: Data from BRAN excluded day 279.
In the following table, UT1R-UTC are the integrated values based on estimated
LODR values in the adjacent column. See IGS Report No. 1498 (jpl07827.sum)
for details:
JPL ERP TABLE GPS week 873 (1996 Sep 29 - Oct 05)
MJD XPole Ypole UT1R-UTC LODR Xsig Ysig UTsig LODsig Nr Nf Nt Xrt Yrt
10**-5" usec us/d 10**-5" us us/d 10**-5"/d
50355.50 26978 23344 67667 1933 3 3 9 9 37 11 26 -90 -385
50356.50 26806 23022 65725 1951 3 3 10 10 37 10 24 -277 -242
50357.50 26675 22657 63742 2016 3 3 9 9 37 12 24 -176 -310
50358.50 26490 22263 61746 1976 3 3 10 10 37 11 26 -168 -402
50359.50 26293 21876 59778 1959 3 3 9 9 37 11 26 -223 -405
50360.50 26092 21473 57831 1936 3 4 9 9 37 12 26 -197 -359
50361.50 25914 21133 55917 1892 3 3 10 10 37 13 26 -90 -280
END ERP TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 873:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 873 (1996 Sep 29 - Oct 05)
96 9 29 96 9 30 96 10 1 96 10 2 96 10 3 96 10 4 96 10 5
prn 3d rss (m)
1 0.30 0.22 0.12 0.09 0.13 0.10 0.20
2 0.15 0.19 0.23 0.27 0.09 0.12 0.10
3 0.28 0.28 0.18 0.24 0.24 0.28 0.19
4 0.13 0.34 0.36 0.19 0.16 0.14 0.20
5 0.24 0.17 0.31 0.24 0.09 0.09 0.17
6 0.21 0.23 0.32 0.16 0.11 0.14 0.15
7 0.10 0.26 0.17 0.09 0.11 0.11 0.20
9 0.20 0.17 0.21 0.05 0.08 0.11 0.15
10 23.0 25.45 25.93 19.94 2.90 3.41 3.04
14 0.18 0.32 0.52 0.42 0.05 0.11 0.19
15 0.19 0.33 0.26 0.21 0.08 0.16 0.20
16 0.10 0.15 0.20 0.19 0.20 0.17 0.27
17 0.26 0.20 0.16 0.37 0.25 0.26 0.25
18 0.1 0.1 0.13 0.43 0.50
19 0.15 0.25 0.21 0.19 0.57 0.49 0.23
21 0.29 0.23 0.26 0.16 0.17 0.12 0.10
22 0.13 0.23 0.26 0.23 0.14 0.16 0.09
23 0.28 0.23 0.14 0.31 0.26 0.12 0.16
24 0.12 0.22 0.37 0.10 0.18 0.13 0.10
25 0.13 0.24 0.30 0.18 0.09 0.12 0.11
26 0.17 0.17 0.37 0.27 0.35 0.20 0.17
27 0.12 0.16 0.14 0.18 0.12 0.26 0.12
28 0.20 0.16 0.16 0.33 0.22 0.21 0.12
29 0.14 1.13 1.83 1.21 0.05 0.17 0.11
30 1.2 8.2 7.12 5.29 5.33
31 0.16 0.51 0.34 0.27 0.18 0.33 0.19
_______________________
END ORBIT REPEATABILITY TABLE
The following table statistically summarizes this week's "engineering data", as
described in IGS Report No. 1528:
JPL ENGINEERING DATA SUMMARY TABLE GPS week 873 (1996 Sep 29 - Oct 05)
receiver/transmitter (dot means point positioned, * means fiducial site)
| days analyzed
| | rms clock noise (ns)
| | | average clock solution (us)
| | | | rms pseudorange (cm)
| | | | | (dot means pcode not analyzed)
| | | | | rms phase (mm)
| | | | | | average arc (hr)
| | | | | | |
|___ |__ |_______ |_______ |___ |___ |__
ALGO* 6.8 . . 46.3 4.53 2.40
AREQ 2.8 88.5 -.360 42.4 4.76 1.94
ASC1 3.9 848. -.388 79.6 5.76 1.69
BAHR 4.7 .414 266. 47.8 4.63 2.50
BOGT 1.7 202. -.326 65.1 5.62 1.68
BRAZ 4.0 .140e+04 -.361 56.8 5.76 2.50
BRMU 2.0 115. -.407 38.5 5.53 2.70
BRUS 5.0 .364 2.63 61.6 5.88 2.34
CAS1 3.0 14.3 276. 37.6 7.12 1.43
CHAT 6.9 103. -.358 80.9 5.60 2.44
CHUR 2.0 6.33 102. 34.0 5.54 1.64
COCO 3.9 128. -.133e+04 49.6 5.00 2.25
CRO1 5.9 223. -.370 41.0 6.41 1.74
DAV1 1.9 5.86 231. 34.4 5.00 1.39
DGAR 1.0 .199e+06 -24.0 . 4.96 .748
EISL 5.6 .568e+07 -.130e+05 40.4 6.19 2.02
ENG1 1.0 .290e+06 506. 99.0 11.0 2.25
FAIR* 7.0 .134 -1.19 39.3 4.77 1.79
FLIN 3.0 86.3 -.364 92.7 4.00 2.22
FORT 4.8 42.4 -.668 49.2 6.44 1.86
GOL2* 7.0 84.4 .245e-01 44.7 5.32 2.33
GUAM 4.9 .114e+04 -.299 60.9 7.88 1.60
HART* 7.0 39.8 -1.29 45.5 4.87 1.94
HKLO 2.9 .289e+06 497. 49.3 5.67 2.46
IRKT 5.5 .296 -.264 54.4 4.85 2.19
KELY 2.0 73.8 -.368 64.5 5.53 1.88
KERG 5.0 114. -19.0 . 5.21 1.74
KIRU 4.0 3.02 -.527 52.6 5.77 2.01
KIT3 7.0 124. -.350 55.4 4.61 2.31
KOKB* 6.9 2.26 3.28 67.6 6.07 2.39
KOSG* 7.0 193. .794e-03 43.7 4.45 1.84
KWJ1 7.0 84.6 -.349 59.2 7.60 1.49
LAMA .9 34.7 -22.1 52.0 4.00 1.44
LHAS 3.8 287. -.361 56.5 5.51 2.29
MAC1 2.9 84.5 -.299 30.4 4.70 1.59
MADR* .7 .373e-01 .545e-01 . 5.00 2.71
MALI 5.8 122. -54.1 . 7.53 1.40
MAS1 5.8 152. -.482 49.7 4.91 2.05
MCM4 7.0 95.7 -.348 42.9 5.73 1.44
MDVO 1.0 .415 190. 68.0 6.00 2.72
MKEA 4.9 .969e-01 -.623 48.2 6.26 2.27
OHIG 6.3 .188e+05 -2.41 52.2 4.61 1.40
PAMA 5.8 670. -.285 . 10.5 1.73
PERT 5.9 71.4 -.726 48.7 4.53 2.30
RCM5 4.0 116. -.376 67.4 7.03 2.31
REYK 4.0 78.8 -.341 57.8 5.77 1.95
SANT* 6.9 .158e+04 1.05 43.1 5.04 1.79
THU1 4.8 75.3 -.334 45.7 5.87 1.78
TID2* 6.9 35.8 -.464 43.6 6.17 2.16
TROM* 2.8 .253e+04 5.52 . 5.00 1.61
USUD 7.0 1.38 2.20 33.5 4.93 2.11
WTZR* 5.7 .128 .326 61.8 4.15 2.61
WUHN 2.0 4.04 -68.8 47.0 4.00 2.42
YAR1* 7.0 3.79 -1.36 . 4.00 1.76
YELL* 7.0 .980e-01 -1.99 42.5 4.47 1.57
PRN01 7.0 81.6 3.39 53.3 5.59 2.50
PRN02 7.0 79.8 -296. 54.2 5.45 2.59
PRN03 7.0 82.0 57.2 51.4 5.89 2.19
PRN04 7.0 81.4 47.0 51.6 6.03 2.06
PRN05 7.0 80.6 60.3 52.0 5.45 2.58
PRN06 7.0 78.9 2.17 50.0 5.30 2.69
PRN07 7.0 81.5 728. 50.9 5.46 2.21
PRN09 7.0 79.8 -12.7 53.9 5.60 2.42
PRN10 1.0 84.4 199. 54.0 6.00 2.59
PRN14 7.0 81.1 14.9 50.3 5.79 2.48
PRN15 7.0 3.34 346. 60.2 5.63 2.41
PRN16 7.0 84.0 27.7 52.5 5.46 2.22
PRN17 7.0 81.0 -127. 55.5 5.45 2.42
PRN18 5.0 83.1 12.4 46.0 5.63 2.35
PRN19 7.0 81.3 124. 52.2 5.73 2.46
PRN21 7.0 82.4 -29.5 53.8 5.30 2.47
PRN22 7.0 81.7 340. 48.1 5.45 2.45
PRN23 7.0 81.3 4.12 55.8 5.16 2.16
PRN24 7.0 82.2 317. 51.4 6.17 2.28
PRN25 7.0 80.5 -3.70 50.5 5.89 2.54
PRN26 7.0 79.6 -46.3 50.6 5.60 2.41
PRN27 7.0 80.5 3.22 51.3 5.46 2.56
PRN28 7.0 2.65 109. 65.3 4.73 2.71
PRN29 7.0 79.7 .964 46.3 7.33 2.77
PRN30 1.0 1.71 -.688 59.0 7.00 3.13
PRN31 7.0 80.4 56.1 52.5 6.04 2.41
_______________________
END ENGINEERING DATA SUMMARY 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
96 9 29 96 9 30 96 10 1 96 10 2 96 10 3 96 10 4 96 10 5
prn 3d rss (m)
1 8.4 9.3 8.4 8.4 7.6 6.5 7.1
2 2.5 2.7 3.4 3.8 3.9 3.1 3.3
3 5.5 5.4 5.0 5.2 4.4 8.2 5.3
4 5.3 4.8 5.3 6.0 4.6 3.5 3.8
5 5.0 2.2 2.4 2.5 3.1 3.1 4.6
6 6.9 7.5 7.4 6.5 7.1 7.2 8.2
7 8.7 8.1 6.4 6.6 6.8 6.9 6.5
9 4.5 3.8 4.0 3.6 4.0 6.3 7.6
10 15.8 17.3 20.2 13.0 15.9 12.4 14.2
14 2.6 15.9 18.5 9.4 3.9 3.4 2.7
15 6.1 4.1 3.2 3.2 3.5 3.7 3.1
16 3.8 3.4 4.0 3.6 3.1 2.7 2.3
17 6.1 2.7 3.6 3.5 2.7 2.1 4.8
18 3.0 7.2 8.1 3.0 7.1
19 2.3 3.0 3.1 2.5 2.6 7.7 5.3
21 4.7 4.0 4.3 4.2 3.7 3.3 3.8
22 7.4 6.2 4.7 4.2 5.1 4.3 3.8
23 2.9 3.2 2.8 3.8 3.1 3.0 4.4
24 5.7 5.5 5.6 4.9 4.5 4.7 4.6
25 8.9 6.4 6.7 5.5 5.0 4.0 4.6
26 4.8 4.9 3.9 4.4 4.7 3.7 4.1
27 7.5 7.4 7.8 7.6 7.8 7.3 8.1
28 10.1 9.0 7.1 5.8 3.6 3.6 4.6
29 3.0 3.1 12.4 22.9 15.6 3.2 2.0
30 15.8 26.2 42.6 15.4
31 5.5 4.3 4.2 3.4 3.8 4.7 2.8
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
global: algo areq asc1 bahr bogt braz brmu brus cas1 chat chur coco cro1 dav1 dgar eisl eng1 fair flin fort gol2 guam hart hklo irkt kely kerg kiru kit3 kokb kosg kwj1 lama lhas mac1 madr mali mas1 mcm4 mdvo mkea ohig pama pert rcm5 reyk sant thu1 tid2 trom usud wtzr wuhn yar1 yell
[Mailed From: djeff at cobra.jpl.nasa.gov]
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