[IGSREPORT-4161] Wk 0922 JPL Analysis Report
D
D
Tue Sep 23 14:45:44 PDT 1997
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IGS Electronic Report Tue Sep 23 14:45:44 PDT 1997 Message Number 4161
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Author: D C Jefferson
Subject: Wk 0922 JPL Analysis Report
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JPL ANALYSIS REPORT GPS-WEEK 0922 (DAYS 250-256, DATES 1997 Sep 07 - Sep 13)
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Submitted by the JPL IGS/FLINN Analysis Team:
D C Jefferson, Y E Bar-Sever, M B Heflin, M M Watkins, F H Webb, J F Zumberge
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/0922. These files (except for *.tro) have also
been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl09227.sum This text file.
jpl09227.erp Earth rotation parameters for GPS week 922.
jpl09227.snx Ground station coordinates for GPS week 922, SINEX format.
jpl0922[0-6].sp3 GPS ephemerides for GPS week 922, sp3 format.
jpl0922[0-6].tro Ground station troposphere estimates for GPS week 922.
______________________________________________________________________________
Median Orbit Repeatability (see table below): 9.0 cm
According to the file nanu1997.mes obtained from the IGS CBIS, PRN01 was
unusable on days 254 and 255 for maintenance/repositioning. Data from this
satellite did not meet our initial convergence criteria on neither of these
days and have been excluded accordingly.
Although used in the analyses of days 250-255, we continue to deweight data
from PRN13. Data from this satellite was mismodeled on day 256 and was not
used at all on this day. This satellite does not appear in any of the orbit
products for this week.
Beginning this week we add six new candidate stations. As with other sites,
these stations are 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)
KSTU (Krasnoyarsk, Russia) -174281.7343 3571333.0971 5264196.1530
NICO (Nicosia, Cyprus) 4359415.9513 2874117.0641 3650777.7999
NTUS (Singapore) -1508022.7839 6195576.8795 148799.4829
PRDS (Calgary, Alberta, Canada) -1659602.8290 -3676725.7540 4925493.5910
SCH2 (Schefferville, Quebec, Canada) 1448636.9320 -3385243.6730 5191046.9500
TORP (Torrance, California, USA) -2517894.2431 -4670260.2923 3527827.5211
A clock reset (large discontinuity) of about 42 microseconds was detected for
PRN27 at approximately 01:35 UT on day 252.
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 PRN13 deweighted days 250-255; excluded day 256.
WARNING: Data from PRN01 excluded days 254 and 255 due to a manuever.
WARNING: Data from CRO1, CSN1, SNI1 excluded day 250.
WARNING: Data from CSN1, DAM2, KELY, POL2 excluded day 251.
WARNING: Data from CSN1, DAM2, REYK, SANT, SNI1 excluded day 252.
WARNING: Data from CSN1, DAM2 excluded day 253.
WARNING: Data from LEEP, USNA excluded day 255.
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 922 (1997 Sep 07 - Sep 13)
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
50698.50 20876 44237 434070 1694 3 3 8 8 37 10 26 144 -277
50699.50 21043 43957 432401 1643 3 4 8 8 37 10 26 194 -264
50700.50 21187 43728 430777 1606 4 4 9 9 37 9 26 129 -291
50701.50 21342 43465 429166 1615 3 4 9 9 37 10 26 143 -256
50702.50 21483 43192 427516 1685 4 4 9 9 37 10 25 179 -297
50703.50 21620 42931 425832 1684 4 4 9 9 37 10 25 156 -241
50704.50 21725 42716 424139 1702 4 4 9 9 37 8 25 129 -217
END ERP TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 922:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 922 (1997 Sep 07 - Sep 13)
97 9 7 97 9 8 97 9 9 97 9 10 97 9 11 97 9 12 97 9 13
prn 3d rss (cm)
1 8 9 8 11 5
2 8 9 7 8 9 5 8
3 25 38 35 39 29 31 20
4 6 6 4 6 11 6 7
5 5 9 6 6 9 12 9
6 7 8 12 12 8 12 8
7 10 8 8 5 9 5 9
9 6 10 11 12 8 11 6
10 7 8 7 4 12 11 8
13 63 65 63 60 307 444
14 6 9 10 4 5 6 4
15 7 9 11 9 11 13 13
16 11 11 8 7 8 7 9
17 10 12 11 8 18 23 20
18 9 20 10 8 6 9 9
19 12 23 15 16 13 10 17
21 12 6 10 8 8 6 10
22 9 12 7 10 7 10 8
23 19 9 21 19 27 13 19
24 6 9 5 7 7 11 5
25 5 7 6 10 10 12 6
26 11 20 5 6 10 9 4
27 6 21 19 8 9 5 9
29 7 9 10 9 8 10 6
30 4 7 6 10 6 7 6
31 10 12 18 14 19 12 20
_______________________
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 922 (1997 Sep 07 - Sep 13)
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* 7.2 . . 47.9 4.16 3.11
AREQ 2.9 98.2 -1.28 50.9 4.00 2.11
ASC1 4.8 114. -1.25 67.9 4.82 1.78
AUCK 1.0 93.0 -1.49 38.0 4.00 2.80
BAHR 7.0 .523 127. 62.0 5.21 3.77
BRAZ 1.9 133. -1.39 62.0 5.54 2.92
CAS1 6.9 15.5 174. 47.0 5.45 1.62
CASA 4.0 25.0 359. 37.7 4.78 2.92
CHAT 6.0 111. -1.17 77.2 5.00 2.55
CRO1 6.0 947. -1.25 52.9 5.39 2.01
DGAR 1.6 955. -1.05 67.6 7.45 1.69
DRAO 1.0 .586 1.24 33.0 4.00 3.19
FAIR* 6.4 .143e+06 -75.4 34.9 4.85 2.17
FLIN 5.0 84.9 -1.12 48.4 5.04 2.79
FORT 4.0 .126 -5.88 49.0 5.52 2.92
GALA 4.9 721. -1.31 70.3 4.65 1.75
GOL2* 7.0 .107 -.606 41.8 4.74 2.20
GUAM 5.8 122. -1.24 64.0 7.52 2.05
HARK 4.8 56.0 -1.64 54.2 4.23 2.66
HKLO .9 .288e+06 499. 49.0 7.00 3.14
HOB2 1.0 83.9 -1.48 45.0 4.00 2.78
IISC 4.0 90.0 -1.36 77.8 5.77 2.34
IRKT 6.9 26.4 -1.31 59.9 4.87 2.18
KELY .7 .290e+04 -2.45 . 6.00 .930
KERG 6.9 .202e+05 147. . 4.89 2.47
KIRU 1.0 4.42 -4.95 55.0 6.00 2.45
KIT3 2.5 125. -1.09 70.1 4.39 2.80
KOKB* 6.8 75.0 -1.23 81.8 5.61 1.71
KOSG* 7.0 .292e+04 -11.5 44.3 4.77 2.62
KOUR 1.0 7.50 -1.67 . 7.00 2.50
KWJ1 7.0 431. -1.22 67.6 6.74 1.63
LHAS 6.8 108. -1.22 59.3 4.88 2.54
LPGS .9 148. -1.09 58.0 5.00 2.27
MAC1 5.8 91.4 -1.16 30.6 4.22 2.16
MAD2 5.0 .127e+04 2.57 84.0 5.81 2.27
MADR* 7.0 2.32 -1.94 . 5.60 2.26
MALI 5.9 116. -15.6 . 7.00 2.13
MAS1 2.0 59.0 -.712 48.5 4.00 2.57
MCM4 7.0 98.3 -1.22 36.0 4.45 1.47
MDVO 2.9 .338e+04 661. 73.3 7.00 1.98
MKEA 7.0 .863e-01 -1.22 51.8 5.00 2.67
NICO 2.0 172. -1.07 37.5 4.53 2.34
NOTO 1.0 .114 -.399 42.0 5.00 2.95
ONSA 2.0 .123 -3.71 54.7 5.53 2.33
PERT 7.0 2.36 -12.8 56.2 5.24 2.90
POL2 1.0 89.1 -1.21 42.0 3.00 2.50
RCM6 2.0 161. -1.23 60.2 6.08 2.40
REYK 4.8 537. -1.24 57.9 6.45 1.69
SANT* 4.5 .158e+04 -.712 46.5 5.00 1.34
SELE 3.0 115. -1.31 34.7 3.36 3.26
SHAO 1.0 95.2 -1.49 58.0 6.00 2.55
STJO 4.0 3.91 .182 55.2 4.83 2.64
TAHI 2.8 205. -1.24 80.8 5.69 2.35
TID2* 7.0 9.59 -1.24 41.6 5.30 2.66
TOUL 2.0 615. -.706 52.0 5.00 2.21
USUD 6.0 1.67 -.838 42.0 6.18 2.67
WTZR* 5.9 11.0 -4.24 61.5 5.02 2.68
WUHN 5.9 8.40 -.469e+04 50.5 5.36 2.82
YELL* 6.0 .361 -2.35 46.0 5.00 1.57
PRN01 4.8 80.8 26.8 57.3 5.23 2.37
PRN02 7.0 81.9 -402. 59.2 5.00 2.45
PRN03 6.8 82.8 49.9 59.9 5.00 2.07
PRN04 7.0 80.9 45.0 57.6 5.46 2.41
PRN05 7.0 79.7 111. 51.6 5.00 2.42
PRN06 7.0 79.4 -1.55 54.4 5.31 2.27
PRN07 7.0 80.6 753. 53.2 5.16 2.21
PRN09 7.0 81.7 -12.0 58.4 5.16 2.22
PRN10 7.0 80.2 11.4 56.3 5.30 2.21
PRN14 7.0 82.0 20.8 51.4 5.31 2.36
PRN15 7.0 4.13 465. 59.7 5.00 2.11
PRN16 7.0 80.9 26.0 54.8 5.30 2.35
PRN17 7.0 79.5 -160. 58.5 5.16 2.23
PRN18 6.9 80.1 3.08 53.7 5.00 2.23
PRN19 7.0 80.8 212. 55.6 5.15 2.46
PRN21 7.0 80.0 78.4 57.5 5.15 2.32
PRN22 7.0 82.4 15.7 53.6 5.00 2.26
PRN23 7.0 81.4 2.41 61.5 5.31 2.25
PRN24 7.0 83.7 747. 57.6 5.45 2.28
PRN25 7.0 80.1 -7.18 52.1 5.00 2.24
PRN26 6.8 83.6 -15.8 54.1 5.00 2.08
PRN27 6.9 .401e+04 13.9 55.8 5.00 2.47
PRN29 6.9 81.6 285. 52.0 5.00 2.55
PRN30 7.0 81.5 -81.4 54.7 5.16 2.59
PRN31 7.0 83.4 -1.72 55.3 5.00 2.15
_______________________
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 9 7 97 9 8 97 9 9 97 9 10 97 9 11 97 9 12 97 9 13
prn 3d rss (cm)
1 395 312 351 291 358
2 153 331 532 239 229 380 315
3 385 519 334 273 257 240 244
4 246 241 169 153 186 224 207
5 263 194 294 264 299 323 377
6 1123 740 682 915 930 655 596
7 329 460 246 319 434 308 340
9 196 252 335 397 203 222 193
10 419 174 259 657 694 494 334
13 171 340 301 435 207 523
14 244 358 386 618 886 498 340
15 202 178 309 453 468 216 273
16 190 748 1927 1051 294 304 188
17 531 457 323 140 207 141 134
18 509 686 447 419 522 518 469
19 254 206 668 931 249 320 366
21 326 130 272 663 179 182 757
22 448 534 388 331 629 558 505
23 889 673 574 871 832 399 591
24 431 412 303 371 288 348 452
25 266 332 486 298 686 602 311
26 202 255 454 466 325 337 350
27 396 326 617 527 394 349 586
29 277 253 332 509 325 559 438
30 200 351 490 237 166 276 261
31 191 226 203 387 312 310 340
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
global: algo areq asc1 auck bahr braz cas1 casa chat cro1 dgar drao fair flin fort gala gol2 guam hark hklo hob2 iisc irkt kely kerg kiru kit3 kokb kosg kour kwj1 lhas lpgs mac1 mad2 madr mali mas1 mcm4 mdvo mkea nico noto onsa pert pol2 rcm6 reyk sant sele shao stjo tahi tid2 toul usud wtzr wuhn yell
[Mailed From: djeff at cobra.jpl.nasa.gov]
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