[IGSREPORT-4722] Wk 0948 JPL Analysis Report
D
D
Fri Mar 20 14:14:39 PST 1998
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IGS Electronic Report Fri Mar 20 14:14:39 PST 1998 Message Number 4722
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Author: D C Jefferson
Subject: Wk 0948 JPL Analysis Report
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JPL ANALYSIS REPORT GPS-WEEK 0948 (DAYS 67-73, DATES 1998 Mar 08 - Mar 14)
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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/0948. These files (except for *.tro) have also
been sent to the CDDIS.
______________________________________________________________________________
filename contents
______________________________________________________________________________
jpl09487.sum This text file.
jpl09487.erp Earth rotation parameters for GPS week 948.
jpl09487.snx Ground station coordinates for GPS week 948, SINEX format.
jpl0948[0-6].sp3 GPS ephemerides for GPS week 948, sp3 format.
jpl0948[0-6].tro Ground station troposphere estimates for GPS week 948.
______________________________________________________________________________
Median Orbit Repeatability (see table below): 10.0 cm
We continue to exclude all data from PRN13 and deweight all data from PRN08
this week. Also, data from PRN02 and PRN03 were mismodeled on days 070 and
071 respectively. Data from PRN02 have been deweighted on day 070, and
those from PRN03 have been excluded on day 071.
According to the file nanu1998.mes obtained from the IGS CBIS, PRN31 was
unusable on day 066. Data from this satellite did not meet our initial
convergence criteria on the following day (067) and have been excluded from
the analysis of day 067 accordingly.
Also as recorded in the same NANU file, PRN26 was unusable on day 069-075.
Large clock discontinuities in bias and drift were detected for PRN26 at
approximately 15:55 on day 069. The magnitudes of these resets were about
90 microseconds and 2.6 microseconds/second respectively. Data from this
satellite were mismodeled on day 070 and excluded this day. Additionally, we
have elected to deweight data from this satellite on the following day (071).
Beginning this week we add a new candidate station. As with other sites,
this stations 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)
NSSP (Yerevan, Armenia) 3478646.9048 3418805.8402 4097987.2315
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 day 067.
WARNING: USNO (not NRC1) used as reference clock days 069-071.
WARNING: Data from PRN08 deweighted the entire GPS week 948.
WARNING: Data from PRN13 excluded the entire GPS week 948.
WARNING: Data from PRN31 excluded day 067.
WARNING: Data from PRN02 deweighted day 070.
WARNING: Data from PRN26 excluded day 070, deweighted day 071.
WARNING: Data from PRN03 excluded day 071.
WARNING: Data from MATE, NANO excluded day 067.
WARNING: Data from KELY, SPK1 excluded day 069.
WARNING: Data from KELY excluded day 070.
WARNING: Data from NOTO excluded day 072.
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 948 (1998 Mar 08 - Mar 14)
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
50880.50 -7070 20737 80029 2093 2 3 10 10 37 24 25 -209 180
50881.50 -7222 20959 77951 2064 2 3 9 9 37 22 26 -196 191
50882.50 -7394 21161 75858 2122 3 3 10 10 37 25 26 -208 179
50883.50 -7533 21363 73710 2173 3 3 10 10 37 24 25 -192 138
50884.50 -7656 21557 71536 2176 3 3 10 10 37 24 25 -153 146
50885.50 -7756 21773 69369 2157 3 3 10 10 37 24 26 -136 203
50886.50 -7888 22002 67202 2177 3 3 10 10 37 23 26 -168 179
END ERP TABLE
The following table indicates the "3-dimensional orbit repeatability", as
defined in IGS Mail Message 37, for GPS week 948:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]
JPL ORBIT REPEATABILITY TABLE GPS week 948 (1998 Mar 08 - Mar 14)
98 3 8 98 3 9 98 3 10 98 3 11 98 3 12 98 3 13 98 3 14
prn 3d rss (cm)
1 8 9 6 11 11 7 9
2 8 10 32 25 9 11 11
3 13 6 15 18 11 11
4 8 5 10 11 8 11 8
5 9 8 7 10 9 6 8
6 8 7 9 7 13 8 10
7 7 6 9 10 17 10 12
8 64 55 63 60 46 55 57
9 8 10 8 14 7 6 13
10 12 9 16 11 5 15 14
14 11 10 10 9 13 7 11
15 16 16 19 18 22 9 7
16 9 8 8 6 6 9 12
17 8 6 8 9 14 7 7
18 9 8 8 7 4 12 16
19 14 17 15 13 10 18 24
21 9 8 9 10 11 11 14
22 11 6 11 6 11 13 9
23 10 11 12 13 20 13 12
24 28 8 14 12 11 21 31
25 8 7 5 6 8 8 9
26 10 7 13 51 17 18
27 15 10 18 18 18 11 16
29 8 9 5 6 9 6 6
30 7 8 6 16 11 7 6
31 11 14 9 5 12 8
_______________________
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 948 (1998 Mar 08 - Mar 14)
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* 7.0 27.1 .523 54.7 4.35 2.84
ASC1 5.7 .103e+04 -.298e-01 66.9 4.75 1.57
AUCK 6.0 95.8 -.967e-01 41.7 5.43 2.80
BAHR 7.0 2.63 233. 46.0 4.87 2.93
BOGT 4.3 217. -.128 73.6 5.43 1.60
BRUS 5.0 .142 2.04 62.4 4.00 2.77
CAGL 1.0 43.2 -.238 42.0 4.00 3.10
CAS1 6.5 .668e+07 -.134e+05 39.2 6.16 1.12
COCO 2.9 100. -.128e+05 51.4 5.00 2.99
CRO1 2.0 157. .185e-01 54.0 5.52 1.86
DAV1* 5.5 225. -.946e-01 . 4.67 .931
DGAR 5.0 405. -.694e-01 66.4 5.54 1.60
EISL 7.0 166. -.823e-01 54.5 5.00 2.71
FAIR* 7.0 .107 -.874e-01 35.9 4.58 1.98
FLIN 1.0 98.8 .465e-01 41.0 3.00 2.29
FORT* 7.0 .372 -.229 81.6 6.48 1.65
GOL2* 7.0 .587e-01 -.528 47.5 4.00 2.22
GUAM* 7.0 122. -.793e-01 60.1 6.15 2.01
HARK* 6.9 8.21 -.168 56.6 5.31 2.63
IRKT* 5.9 .231 .348 54.4 4.35 2.58
KELY .7 .382e+04 -1.11 . 5.00 1.32
KERG* 5.7 741. .207e+04 . 5.84 2.04
KIT3* 2.7 123. -.484e-01 69.4 4.00 2.70
KOKB* 7.0 .779e-01 -17.5 73.7 4.87 2.52
KWJ1* 7.0 116. -.811e-01 70.3 5.46 1.92
LHAS* 6.9 100. -.788e-01 56.0 4.31 2.60
MAC1* 6.5 88.9 -.760e-01 45.5 4.75 1.95
MAD2* 5.1 .140e+04 .863 54.1 5.36 1.83
MALI* 4.8 .829e+04 -27.8 90.2 7.00 1.67
MAS1* 1.0 2.89 .460e-01 47.0 4.00 2.26
MCM4 3.5 91.9 -.260e-01 43.4 5.00 1.22
MDVO 1.0 .105e+05 855. 69.0 6.00 1.85
MKEA 4.0 159. .498 68.6 4.28 2.58
NICO .9 72.0 .346e-01 44.0 4.00 2.33
NOTO 1.0 .392 -.346 32.0 5.00 2.67
NRC1 3.1 . . 68.5 3.37 2.93
OHIG* 3.6 .275e+04 .312e-02 57.8 4.77 1.58
ONSA* 6.9 .964e-01 .545 38.3 3.62 2.31
PERT* 4.0 1.89 -4.14 55.1 4.94 2.80
POL2 2.0 82.5 .527e-01 59.6 3.00 2.48
RCM6 1.0 97.0 .307e-02 77.0 6.00 2.51
REYK 1.0 82.6 .242e-01 52.0 6.00 1.76
SANT* 6.2 .282e+04 -1.89 47.3 4.49 1.42
TAHI 3.4 .133e+04 .642e-01 75.6 6.08 2.08
THU1* 4.9 76.4 -.111 46.4 5.60 1.95
TID2* 6.9 46.8 -.201 35.8 5.32 2.39
TSKB* 7.0 1.34 -1.73 47.4 4.00 3.02
USNO 3.0 . . 58.1 5.00 2.75
USUD 7.0 .647 -.589 46.9 4.15 2.72
WES2 1.0 .137 .678 59.0 4.00 2.76
WTZR* 5.4 .560e-01 1.10 65.1 4.00 2.61
WUHN 2.9 5.88 -736. 48.7 4.68 2.26
YAR1* 7.0 91.4 -.757e-01 37.9 4.50 2.26
YELL* 7.0 393. 2.00 47.0 4.71 1.21
PRN01 7.0 80.6 41.6 51.9 5.00 2.20
PRN02 6.0 81.7 -464. 60.0 5.00 2.15
PRN03 6.0 83.9 107. 54.1 5.00 2.10
PRN04 7.0 80.8 16.0 57.8 5.00 2.06
PRN05 7.0 80.5 140. 57.4 4.45 2.53
PRN06 7.0 81.3 -.386 55.6 5.15 2.10
PRN07 7.0 82.6 771. 57.1 5.00 2.13
PRN09 7.0 78.3 -33.1 57.2 4.87 2.16
PRN10 7.0 82.3 19.4 57.1 4.87 2.06
PRN14 7.0 78.9 27.5 50.0 4.87 2.31
PRN15 7.0 4.10 533. 57.6 5.29 2.06
PRN16 7.0 81.3 52.6 54.0 4.87 2.38
PRN17 7.0 81.5 -175. 59.1 4.87 1.98
PRN18 7.0 78.9 11.7 54.3 5.00 2.22
PRN19 7.0 83.7 384. 57.7 5.00 2.00
PRN21 7.0 83.3 27.7 52.5 4.87 2.12
PRN22 7.0 80.0 51.0 53.2 5.00 2.18
PRN23 7.0 80.0 10.8 53.5 5.00 2.28
PRN24 7.0 81.7 809. 60.9 5.00 2.18
PRN25 7.0 83.7 -6.94 53.6 5.00 2.13
PRN26 4.9 .781e+04 -143. 56.0 5.00 2.04
PRN27 7.0 80.7 20.7 61.4 5.00 2.08
PRN29 7.0 82.0 289. 52.3 5.00 2.30
PRN30 7.0 81.8 -29.1 54.7 4.87 2.39
PRN31 6.0 80.8 1.89 57.2 5.00 2.16
_______________________
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 8 98 3 9 98 3 10 98 3 11 98 3 12 98 3 13 98 3 14
prn 3d rss (cm)
1 490 450 584 423 284 255 298
2 301 169 374 348 142 161 668
3 272 363 317 315 563 230
4 283 507 497 513 604 474 444
5 400 345 396 233 185 190 331
6 744 807 814 764 785 689 647
7 381 251 293 303 289 445 339
8 392 487 670 329 375 329 693
9 223 187 263 426 228 470 302
10 288 1048 771 441 602 557 594
14 576 749 650 968 777 550 472
15 282 299 259 207 249 401 279
16 618 1024 483 400 846 550 589
17 539 425 523 527 418 348 272
18 347 373 385 328 372 699 411
19 227 204 306 436 436 294 139
21 740 411 520 466 521 312 379
22 355 477 592 936 412 447 611
23 453 464 259 384 292 306 270
24 736 481 273 270 249 337 394
25 432 328 442 803 274 320 432
26 886 125 212 138 168 716
27 561 379 299 165 277 282 344
29 371 224 198 220 277 309 195
30 246 257 307 312 232 265 374
31 533 502 466 348 235 256
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
global: algo asc1 auck bahr bogt brus cagl cas1 coco cro1 dav1 dgar eisl fair flin fort gol2 guam hark irkt kely kerg kit3 kokb kwj1 lhas mac1 mad2 mali mas1 mcm4 mdvo mkea nico noto nrc1 ohig onsa pert pol2 rcm6 reyk sant tahi thu1 tid2 tskb usno usud wes2 wtzr wuhn yar1 yell
[Mailed From: djeff at cobra.jpl.nasa.gov]
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