[IGSREPORT-3439] Wk 0890 JPL Analysis Report
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D
Tue Feb 11 09:08:41 PST 1997
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IGS Electronic Report Tue Feb 11 9:08:41 PST 1997 Message Number 3439
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Author: D C Jefferson
Subject: Wk 0890 JPL Analysis Report
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JPL ANALYSIS REPORT GPS-WEEK 0890 (DAYS 26-32, DATES 1997 Jan 26 - Feb 01)
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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, Y E Bar-Sever
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/0890. These files (except for *.tro) have also
been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl08907.sum This text file.
jpl08907.erp Earth rotation parameters for GPS week 890.
jpl08907.snx Ground station coordinates for GPS week 890, SINEX format.
jpl0890[0-6].sp3 GPS ephemerides for GPS week 890, sp3 format.
jpl0890[0-6].tro Ground station troposphere estimates for GPS week 890.
______________________________________________________________________________
Median Orbit Repeatability (see table below): 14.0 cm
(excluding deweighted satellites)
PRODUCTS UPDATE
---------------
Starting this week, our IGS submission has been upgraded to SINEX 1.0 format.
Thanks to Remi Ferland of NRCan for providing the SINEX conversion utilities.
This week we also begin reporting estimates of total zenith troposphere delay
from all the sites participating in our orbit solution process. The files,
one for each solution day, will be made available on a weekly basis along with
the other IGS products; please see the products listing in the header above.
The information in the files is arranged according to Variant 2 in the agreed
upon format put forward by Gerd Gendt in his letter to the AC's from November
19, 1996. Briefly, they contain the total troposphere delay at 5-minute
intervals from about 37 globally-distributed sites. They also contain the
estimated coordinates for each of the participating sites.
GENERAL
------
We have recently discovered an error in our treatment of the solar radiation
pressure estimate for PRN's 10 and 30 which has existed since their inclusion
in our processing beginning in mid-1996. This error has also likely been
responsible for the increased noise in our LOD estimates during that period.
The problems have been corrected beginning with day 2 of GPS week 890
(1997-027), and we expect that our LOD will return to its previous quality.
We no longer deweight data from PRN10 as of this date as well.
A clock reset was detected at ALGO at approximately 00:00 UT on day 032. As
we use a 30-hour data span, we elected to use a different reference clock,
FAIR, on this and the previous day (031).
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 on day 026 only.
WARNING: FAIR (not ALGO) used as reference clock days 031 and 032.
WARNING: Data from ONSA excluded day 026.
WARNING: Data from LPGS, YAR1 excluded day 027.
WARNING: Data from HOB2, TROM excluded day 028.
WARNING: Data from WTZR excluded day 029.
WARNING: Data from AUCK, CHAT excluded day 030.
WARNING: Data from AUCK, CHAT, POTM, WTZR excluded day 031.
WARNING: Data from AUCK, CHAT, HFLK, KELY, OHIG excluded day 032.
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 890 (1997 Jan 26 - Feb 01)
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
50474.50 -9511 13450 -157154 1551 3 4 7 7 37 12 25 -307 279
50475.50 -9821 13645 -158752 1644 3 4 8 8 37 12 25 -270 219
50476.50 -10112 13863 -160395 1642 3 3 7 7 37 12 25 -300 253
50477.50 -10420 14066 -161995 1558 3 3 7 7 37 11 25 -297 207
50478.50 -10675 14213 -163538 1528 3 4 8 8 36 8 25 -300 257
50479.50 -10952 14469 -165063 1523 3 3 8 8 37 11 25 -300 251
50480.50 -11259 14674 -166519 1388 3 3 7 7 37 12 25 -287 229
END ERP TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 890:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 890 (1997 Jan 26 - Feb 01)
97 1 26 97 1 27 97 1 28 97 1 29 97 1 30 97 1 31 97 2 1
prn 3d rss (m)
1 0.12 0.09 0.08 0.12 0.10 0.09 0.09
2 0.14 0.19 0.08 0.08 0.07 0.09 0.07
3 0.28 0.22 0.16 0.22 0.22 0.14 0.17
4 0.09 0.08 0.16 0.12 0.14 0.14 0.16
5 0.09 0.12 0.03 0.16 0.14 0.09 0.15
6 0.16 0.15 0.08 0.07 0.10 0.07 0.13
7 0.11 0.09 0.17 0.13 0.14 0.11 0.09
9 0.11 0.13 0.10 0.11 0.07 0.11 0.15
10 0.75 0.32 0.34 0.20 0.18 0.10 0.20
14 0.20 0.15 0.13 0.20 0.17 0.18 0.26
15 0.12 0.12 0.08 0.09 0.14 0.10 0.14
16 0.45 0.36 0.16 0.15 0.13 0.19 0.31
17 0.14 0.12 0.08 0.13 0.13 0.08 0.18
18 0.26 0.25 0.15 0.11 0.15 0.25 0.51
19 0.15 0.27 0.09 0.21 0.24 0.20 0.38
21 0.14 0.12 0.08 0.09 0.09 0.09 0.11
22 0.13 0.15 0.13 0.09 0.11 0.08 0.10
23 0.17 0.15 0.17 0.22 0.19 0.11 0.13
24 0.10 0.09 0.16 0.23 0.20 0.24 0.15
25 0.23 0.05 0.12 0.29 0.14 0.17 0.17
26 0.24 0.16 0.12 0.07 0.09 0.11 0.17
27 0.19 0.15 0.09 0.12 0.15 0.12 0.11
29 0.25 0.25 0.13 0.11 0.20 0.15 0.10
30 0.28 0.17 0.09 0.20 0.15 0.09 0.12
31 0.09 0.17 0.17 0.14 0.15 0.12 0.14
_______________________
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 890 (1997 Jan 26 - Feb 01)
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* 6.9 163. -.802 61.4 4.00 2.83
ANKR 2.0 102. -1.30 53.0 4.00 2.87
AREQ 3.9 99.8 -.540 39.7 5.05 1.58
ASC1 6.9 84.2 -.742 80.0 5.59 1.41
BAHR 5.2 .502 264. 40.3 4.77 3.52
BOGT 7.0 130. -.726 52.8 6.73 1.47
BRAZ 1.0 102. -.618 57.0 6.00 1.50
BRUS 6.0 .403 -1.95 60.0 4.18 2.52
CAS1 3.8 16.1 .204e+04 38.0 5.77 1.49
CASA 1.8 7.02 17.0 48.2 5.66 2.68
CHAT 3.9 107. -.481 74.0 5.77 2.65
COCO 5.8 216. -.399e+04 42.1 6.23 3.28
DAV1 2.0 43.0 250. 33.5 4.00 1.59
DGAR 6.9 92.7 -.741 65.7 8.68 1.59
FAIR* 7.0 .714e-01 .602 33.0 4.61 2.16
FLIN 1.0 85.2 -.608 38.0 3.00 2.51
FORT 5.9 .194 -1.05 51.4 7.72 2.69
GODE 2.0 .141 -1.08 41.5 4.00 2.76
GOL2* 7.0 .830e-01 -.875 61.3 4.92 2.70
GUAM 7.0 116. -.739 56.1 6.51 2.27
HART* 7.0 603. -3.31 49.3 5.33 2.60
HOB2 1.9 .367 -1.23 51.1 5.00 2.76
IISC 6.5 84.4 -.701 69.5 5.16 2.37
IRKT 4.9 .183 -.339 45.0 5.00 2.89
KELY 1.7 .187e+05 -1.26 44.4 6.00 1.48
KERG 5.0 128. -3.57 . 6.23 2.60
KIRU 1.0 2.88 -.759 55.0 7.00 2.19
KIT3 1.8 127. -.923 61.0 4.53 3.25
KOKB* 6.9 74.5 -.697 61.9 7.01 1.94
KOSG* 7.0 42.8 -7.92 41.3 4.63 2.16
KWJ1 5.9 89.0 -.780 60.5 7.34 1.61
LHAS 4.2 .109e+07 579. 59.6 4.88 2.00
MAC1 1.9 87.6 -.840 31.0 4.52 2.04
MADR* 6.9 .878e-01 24.7 . 5.47 2.34
MALI 5.0 21.2 -19.9 . 7.81 2.26
MAS1 7.0 135. -.676 41.2 4.61 2.39
MCM4 6.0 98.1 -.781 42.2 5.51 1.56
MKEA 4.8 .746e-01 -.823 43.6 5.63 2.45
NOTO 2.0 .691e-01 -.631 31.0 4.51 2.78
NYAL 1.0 .813 -1.38 . 5.00 1.65
OHIG 3.8 .347e+05 -1.06 61.2 4.81 1.01
PAMA 7.0 150. -.741 . 11.2 2.12
PERT 7.0 2.36 -4.88 49.7 4.90 3.08
POL2 2.8 79.7 -.487 57.6 3.70 2.53
RCM6 5.0 80.5 -.511 61.4 5.68 2.28
REYK 1.0 74.9 -.569 57.0 6.00 1.62
SANT* 5.3 .452e+04 -.638 40.1 5.56 .878
SHAO 1.0 84.6 -.630 42.0 4.00 2.85
THU1 5.0 75.3 -.648 42.2 5.21 2.27
TID2* 5.9 20.1 -.643 41.5 6.54 2.71
TROM* 2.0 4.95 28.8 . 7.03 1.28
USUD 6.0 .842 1.94 35.6 4.55 2.73
WTZR* 4.0 .168 .212 58.0 4.27 2.60
WUHN 2.0 5.28 -435. 41.5 4.00 2.60
XIAN 1.0 150. -.389 51.0 4.00 3.04
YAR1* 3.7 11.2 -.758 . 5.57 2.35
YELL* 5.9 .308 -.530 43.0 4.70 1.53
PRN01 7.0 79.6 11.4 53.9 5.73 2.28
PRN02 6.9 82.1 -332. 55.0 5.87 2.03
PRN03 6.6 79.5 93.7 53.3 5.87 2.05
PRN04 6.9 82.1 9.64 49.8 6.31 1.85
PRN05 7.0 81.2 79.1 51.0 5.60 2.48
PRN06 6.8 82.7 3.48 49.5 5.90 2.40
PRN07 6.8 81.3 737. 52.8 6.16 2.02
PRN09 7.0 81.6 -26.7 53.1 5.31 2.41
PRN10 4.9 81.0 2.51 53.4 6.04 2.00
PRN14 6.6 82.1 16.1 50.5 5.76 1.85
PRN15 7.0 3.71 386. 55.6 5.31 2.11
PRN16 6.7 79.5 40.9 52.6 5.73 2.05
PRN17 7.0 78.6 -139. 53.2 5.60 2.17
PRN18 6.8 79.5 20.8 49.8 6.33 1.82
PRN19 6.9 83.3 247. 52.2 5.76 1.90
PRN21 6.9 81.9 27.3 55.3 6.02 2.19
PRN22 6.9 81.8 367. 52.3 5.87 2.18
PRN23 6.8 82.6 8.23 53.7 5.87 2.05
PRN24 7.0 81.4 280. 49.8 6.59 2.07
PRN25 7.0 81.6 -5.57 48.6 5.73 2.09
PRN26 7.0 80.6 -111. 54.5 6.16 2.27
PRN27 7.0 80.2 16.1 51.7 5.76 2.02
PRN29 6.9 81.3 5.22 49.8 5.45 2.17
PRN30 7.0 80.7 -32.4 47.9 5.46 2.34
PRN31 6.6 81.9 189. 50.9 5.60 2.22
_______________________
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
97 1 26 97 1 27 97 1 28 97 1 29 97 1 30 97 1 31 97 2 1
prn 3d rss (m)
1 5.2 4.6 4.5 4.3 5.0 5.7 5.1
2 5.4 6.7 4.5 4.3 4.1 3.8 4.5
3 5.7 5.2 6.1 5.3 6.1 6.2 6.3
4 3.8 3.6 2.2 2.2 3.3 3.8 3.0
5 4.2 4.3 5.3 5.0 3.7 4.0 3.5
6 6.8 6.6 5.8 6.6 6.2 5.9 7.7
7 6.4 6.6 7.7 7.8 8.2 7.3 7.7
9 2.1 2.0 2.5 2.1 2.4 3.1 2.1
10 7.0 6.0 6.2 7.3 8.2 6.3 7.3
14 2.2 8.1 6.7 6.0 8.9 9.9 2.3
15 3.6 4.3 2.9 4.7 3.6 4.4 3.9
16 2.0 2.5 2.8 4.3 3.5 3.0 2.9
17 4.0 3.7 4.0 4.8 6.4 4.6 4.0
18 2.8 6.4 5.0 4.4 3.8 8.1 3.8
19 2.2 1.7 1.9 1.9 2.4 2.7 2.2
21 11.4 9.4 8.4 8.3 8.1 8.5 10.0
22 7.2 6.1 7.6 6.9 5.6 6.0 6.5
23 26.1 26.2 25.7 13.8 8.8 10.5 12.3
24 4.8 4.1 5.3 5.3 4.2 3.7 3.9
25 5.7 4.7 3.9 5.0 3.8 4.4 4.1
26 3.1 3.4 3.3 2.8 3.3 3.4 3.2
27 5.2 5.6 2.9 3.4 3.5 3.4 3.6
29 2.4 2.0 2.3 3.0 2.6 3.2 2.5
30 6.9 7.4 6.1 5.7 5.7 4.7 4.1
31 4.5 3.0 3.2 3.3 3.7 3.5 4.3
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
global: algo ankr areq asc1 bahr bogt braz brus cas1 casa chat coco dav1 dgar fair flin fort gode gol2 guam hart hob2 iisc irkt kely kerg kiru kit3 kokb kosg kwj1 lhas mac1 madr mali mas1 mcm4 mkea noto nyal ohig pama pert pol2 rcm6 reyk sant shao thu1 tid2 trom usud wtzr wuhn xian yar1 yell
[Mailed From: djeff at cobra.jpl.nasa.gov]
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