[IGSREPORT-4746] Wk 0949 JPL Analysis Report
D
D
Mon Mar 30 14:27:55 PST 1998
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IGS Electronic Report Mon Mar 30 14:27:55 PST 1998 Message Number 4746
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Author: D C Jefferson
Subject: Wk 0949 JPL Analysis Report
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JPL ANALYSIS REPORT GPS-WEEK 0949 (DAYS 74-80, DATES 1998 Mar 15 - Mar 21)
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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 (137.78.60.30),
directory pub/jpligsac/0949. These files (except for *.tro) have also
been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl09497.sum This text file.
jpl09497.erp Earth rotation parameters for GPS week 949.
jpl09497.snx Ground station coordinates for GPS week 949, SINEX format.
jpl0949[0-6].sp3 GPS ephemerides for GPS week 949, sp3 format.
jpl0949[0-6].tro Ground station troposphere estimates for GPS week 949.
______________________________________________________________________________
Median Orbit Repeatability (see table below): 10.0 cm
ERRATA
------
In our AC report for GPS week 920 (jpl09207.sum), the following was stated
in our introduction of our strategy to estimate tropospheric gradients in
our processing:
"2. We are now estimating troposphere horizontal delay gradients at all the
sites. The two gradient parameters are modeled as random walk with sigma
of 0.3 cm/sqrt(hour) and are estimated every five minutes.
3. We have reduced the random walk sigma on the estimated zenith wet delay
from 10.2 cm/sqrt(hour) to 3 cm/sqrt(hour)."
The units on all of the random walk sigma parameters mentioned above should
read "mm/sqrt(hour)". We regret any inconvenience caused by the misprint.
GENERAL
-------
This week we begin to include data from PRN13 (Block II-R); however, all
data from this satellite have been deweighted. We also continue to deweight
all data from PRN08.
Data from PRN03 did not meet our initial orbit convergence criteria on day
079, and have been excluded accordingly. Note that data from PRN06 were
deweighted on day 0 of the following week (950), hence the large overlap
value in our orbit repeatability table for this satellite on day 080.
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: TID2 (not NRC1) used as reference clock days 075 and 079.
WARNING: USNO (not NRC1) used as reference clock day 076.
WARNING: MKEA (not NRC1) used as reference clock days 077, 078, and 080.
WARNING: Data from PRN08 and PRN13 deweighted the entire GPS week 949.
WARNING: Data from PRN03 excluded day 079.
WARNING: Data from LPGS, MALI excluded day 074.
WARNING: Data from LPGS, MALI, SELE excluded day 075.
WARNING: Data from KELY, MALI, ROCH, WSRT excluded day 076.
WARNING: Data from KERG, ONSA, ROCH, SHAO excluded day 077.
WARNING: Data from HARK, HRAO, IISC, KERG, MADR, ROCH excluded day 079.
WARNING: Data from HARK, HRAO, KERG excluded day 080.
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 949 (1998 Mar 15 - Mar 21)
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
50887.50 -8098 22200 65045 2138 3 3 10 10 37 23 27 -212 144
50888.50 -8346 22353 62893 2165 2 3 10 10 37 24 27 -201 146
50889.50 -8556 22513 60741 2140 3 3 10 10 37 23 27 -226 151
50890.50 -8784 22666 58607 2127 3 3 10 10 37 24 27 -209 160
50891.50 -8957 22834 56505 2077 2 3 10 10 37 26 27 -201 157
50892.50 -9138 23023 54441 2051 3 3 11 11 37 24 26 -210 183
50893.50 -9368 23215 52375 2081 3 3 10 10 37 23 27 -242 136
END ERP TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 949:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 949 (1998 Mar 15 - Mar 21)
98 3 15 98 3 16 98 3 17 98 3 18 98 3 19 98 3 20 98 3 21
prn 3d rss (cm)
1 10 4 8 10 5 11 8
2 9 7 13 16 10 14 22
3 8 7 9 9 8 6
4 8 6 12 10 5 11 15
5 10 4 7 9 8 9 7
6 9 7 18 14 11 8 423
7 7 7 12 16 6 13 13
8 63 33 48 52 68 55 51
9 14 16 6 7 10 9 5
10 12 10 16 7 10 10 10
13 76 93 113 45 92 86 77
14 12 8 6 7 8 6 12
15 21 16 7 6 6 11 7
16 14 11 9 8 6 8 8
17 8 6 6 13 8 11 11
18 20 13 7 8 8 24 29
19 10 9 47 34 8 14 18
21 11 11 10 14 14 11 10
22 14 5 8 9 13 18 5
23 16 10 10 11 14 13 11
24 9 10 14 9 8 39 33
25 7 11 6 7 4 8 6
26 16 22 32 13 14 7 5
27 18 25 8 8 7 18 23
29 6 5 12 6 8 9 7
30 8 5 10 7 10 9 6
31 10 13 6 25 14 23 30
_______________________
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 949 (1998 Mar 15 - Mar 21)
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)
| | | | | | |
|___ |__ |_______ |_______ |___ |___ |__
ALBH 1.0 2.34 3.72 45.0 3.00 2.57
ALGO* 7.0 92.2 .843 52.4 3.77 2.70
AREQ* 1.0 122. .210 76.0 4.00 2.09
ASC1 5.2 .280e+04 .229 71.6 5.00 1.40
AUCK 5.0 90.1 .283 42.8 5.04 2.43
BAHR 4.7 .544e+04 217. 58.4 5.42 2.61
BOGT 3.8 265. .395 66.0 5.54 1.48
BRMU* 1.0 99.5 .250 46.0 5.00 2.88
BRUS 1.0 .538e-01 3.04 63.0 4.00 2.62
CAS1 4.4 .721e+07 -.152e+05 39.1 6.00 1.18
CASA 1.0 .913e+04 27.4 35.0 6.00 2.84
CHAT 2.0 112. .133 76.5 6.10 2.67
COCO 6.9 112. -.136e+05 55.8 5.16 2.64
CRO1 2.9 745. .751e-01 55.3 5.37 1.85
DAV1* 5.7 138. .249 . 4.85 1.49
DGAR 5.0 583. .222 63.7 6.07 1.53
EISL 7.0 192. .232 58.2 5.00 2.64
FAIR* 7.0 .202 .163 38.6 4.59 2.09
FLIN 1.0 84.8 .220 42.0 4.00 2.40
FORT* 5.9 .303 .755e-01 85.5 6.69 1.57
GALA 1.7 .157e+04 -.114 87.7 5.53 1.56
GODE 2.0 .258 2.44 46.5 4.00 2.56
GOL2* 7.0 134. .783 49.8 3.88 1.97
GUAM* 7.0 130. .214 69.1 5.45 1.86
HARK* 4.8 49.2 .110e-01 58.1 5.00 2.37
IISC 1.0 .230e+04 .320 80.0 5.00 1.75
IRKT* 5.9 .230 .669 47.7 4.36 2.51
KELY 1.0 85.1 .210 . 5.00 1.36
KERG* 2.8 .267e+04 .208e+04 . 6.00 2.37
KIT3* 5.8 118. .190 69.3 4.19 2.20
KOKB* 7.0 .255 -17.1 82.4 4.47 2.29
KOUR* .9 2.97 1.48 79.0 7.00 1.52
KWJ1* 6.9 246. .236 78.6 5.72 1.91
LHAS* 7.0 108. .236 62.7 4.16 2.45
MAC1* 4.6 85.7 .269 45.6 4.21 1.99
MAD2* 5.9 300. .170 55.1 5.17 1.96
MAG0 1.0 .289e+06 483. 32.0 5.00 2.15
MALI* 4.0 151. -94.0 90.5 6.77 1.65
MAS1* 1.0 81.6 1.09 60.0 4.00 2.24
MATE* 1.0 .241 .371 50.0 4.00 2.66
MCM4 2.9 87.6 .389 41.7 4.71 1.13
MDVO 2.8 .395e+04 540. 70.3 6.00 1.96
MKEA 3.9 .102 -.720 65.8 4.00 2.31
MOIN .9 205. .224 77.0 5.00 2.23
NICO 1.0 86.7 .203 47.0 5.00 2.04
NOTO 2.0 .317 5.98 40.5 4.00 2.62
NRC1 2.1 .112 .169 57.7 3.00 2.79
NYAL 5.8 23.1 .233 72.0 5.36 1.46
OHIG* 5.7 .256e+04 .373 61.8 4.70 1.63
ONSA* 5.0 250. .487 38.8 3.63 2.20
PERT* 4.0 2.75 -4.52 55.7 4.80 2.50
RCM6 1.0 102. .289e-01 . 4.00 2.66
REYK 2.0 85.5 .135 56.6 6.52 1.62
SANT* 6.4 .255e+04 -2.86 44.4 4.33 1.18
SHAO* 1.0 89.1 .238 54.0 5.00 2.34
TAHI 1.6 .248e+05 1.39 82.5 6.00 2.06
TID2* 6.9 .231 .335e-01 38.5 5.73 2.29
TSKB* 7.0 1.69 -1.49 49.2 4.00 3.00
USNO 2.0 .246 .722 55.0 5.00 2.61
USUD 5.0 70.3 -.341e-01 46.6 4.00 2.77
WTZR* 7.0 .179 .769 66.5 4.31 2.48
WUHN 3.9 8.55 -831. 52.5 5.05 2.30
YAR1* 7.0 88.0 .239 38.9 4.15 2.01
YELL* 7.0 33.4 3.96 45.8 4.57 1.20
PRN01 6.9 79.7 42.5 54.3 5.00 2.32
PRN02 6.8 80.4 -466. 63.0 4.87 2.19
PRN03 5.9 82.9 109. 58.6 5.00 2.13
PRN04 6.9 79.2 17.5 58.0 4.88 2.11
PRN05 6.9 81.3 141. 60.3 4.87 2.44
PRN06 6.9 81.6 -.395e-01 58.6 5.00 2.09
PRN07 6.9 80.8 773. 60.5 4.87 1.96
PRN09 6.9 81.2 -33.7 60.7 5.00 2.04
PRN10 6.9 82.0 20.0 60.0 5.00 1.98
PRN14 6.9 82.1 28.1 50.2 4.87 2.41
PRN15 6.8 3.72 536. 62.0 4.88 2.10
PRN16 6.9 79.5 54.0 55.8 5.00 2.29
PRN17 6.9 81.4 -175. 62.5 4.87 2.02
PRN18 6.9 80.9 12.3 58.1 5.00 2.10
PRN19 6.9 84.8 386. 60.7 5.00 2.03
PRN21 6.9 81.5 29.3 55.3 4.87 2.32
PRN22 6.9 82.9 52.6 57.1 5.00 2.13
PRN23 6.9 81.8 11.3 57.1 5.00 2.31
PRN24 6.9 79.7 815. 63.6 5.00 1.92
PRN25 6.9 82.2 -6.61 56.5 5.00 2.06
PRN26 6.9 80.4 -171. 57.7 5.15 2.06
PRN27 6.9 79.9 21.8 61.6 4.87 2.07
PRN29 6.9 81.7 316. 55.2 5.16 2.26
PRN30 6.9 81.6 -29.8 56.3 5.00 2.34
PRN31 6.9 81.8 2.44 60.8 5.00 2.21
_______________________
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
98 3 15 98 3 16 98 3 17 98 3 18 98 3 19 98 3 20 98 3 21
prn 3d rss (cm)
1 334 327 312 505 618 337 454
2 459 538 344 419 280 336 148
3 281 240 280 248 312 949
4 297 238 428 646 325 530 350
5 189 161 241 282 298 228 318
6 578 670 639 664 687 709 539
7 505 360 429 424 327 364 467
8 903 169 159 170 203 361 341
9 276 634 214 258 329 396 231
10 598 413 668 576 362 655 818
13 254 1170 689 175 279 590 493
14 462 457 493 639 384 504 480
15 338 248 362 314 373 273 293
16 484 428 229 297 477 504 801
17 402 375 448 411 418 396 285
18 719 576 404 391 793 609 414
19 186 497 188 1088 709 182 273
21 408 344 417 188 316 488 512
22 480 632 425 829 507 436 513
23 305 354 305 212 364 449 411
24 436 405 429 337 181 242 659
25 492 665 363 570 725 314 411
26 559 538 487 258 156 731 438
27 365 279 320 708 517 496 465
29 289 235 361 153 154 203 291
30 241 347 275 340 210 263 337
31 306 393 287 310 358 451 418
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
global: albh algo areq asc1 auck bahr bogt brmu brus cas1 casa chat coco cro1 dav1 dgar eisl fair flin fort gala gode gol2 guam hark iisc irkt kely kerg kit3 kokb kour kwj1 lhas mac1 mad2 mag0 mali mas1 mate mcm4 mdvo mkea moin nico noto nrc1 nyal ohig onsa pert rcm6 reyk sant shao tahi tid2 tskb usno usud wtzr wuhn yar1 yell
[Mailed From: djeff at cobra.jpl.nasa.gov]
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