Subject: [IGSREPORT-5053] Wk 0962 JPL Analysis Report
From: D C Jefferson
Date: Mon, 29 Jun 1998 17:19:28 PDT

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IGS Electronic Report    Mon Jun 29 17:19:28 PDT 1998      Message Number 5053
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Author: D C Jefferson
Subject: Wk 0962 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0962 (DAYS 165-171, DATES 1998 Jun 14 - Jun 20)
******************************************************************************

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/0962.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09627.sum         This text file.
jpl09627.erp         Earth rotation parameters for GPS week 962.
jpl09627.snx         Ground station coordinates for GPS week 962, SINEX format.
jpl0962[0-6].sp3     GPS ephemerides for GPS week 962, sp3 format.
jpl0962[0-6].tro     Ground station troposphere estimates for GPS week 962.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 7.5 cm

According to the file nanu1998.mes obtained from the IGS CBIS, PRN17 was
unusable on days 166 and 167.  Data from this satellite did not meet our
initial orbit convergence criteria on either day, and have been excluded
accordingly.

Also, a shift in the clock solution for PRN06 was detected on day 167 which
seemed to have an adverse affect on its orbit solution this day.  The magnitude
of the shift was approximately 350 ns and occured at at about 14:20 UT.  We
have chosen to exclude this satellite from this day's analysis.

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: NRC1 (not USNO) used as reference clock days 166, 170, and 171.
WARNING: FAIR (not USNO) used as reference clock days 167-169.
WARNING: Data from PIN1 excluded day 165.
WARNING: Data from PRN17, CSN1 excluded day 166.
WARNING: Data from PRN06, PRN17, KSTU, NYAL excluded day 167.
WARNING: Data from KSTU excluded day 168.
WARNING: Data from CSN1, KSTU excluded day 169.
WARNING: Data from KELY, KSTU excluded day 170.
WARNING: Data from KELY excluded day 171.

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 962 (1998 Jun 14 - Jun 20)
     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
50978.50  -9874  41509  -100455   909    2    2     8      8 37 24 27  101  138 
50979.50  -9736  41634  -101298   777    2    2     8      8 37 24 26  104  174 
50980.50  -9590  41776  -102016   659    2    2     8      8 37 25 25  138  144 
50981.50  -9417  41936  -102668   645    2    2     8      8 37 26 27  170  195 
50982.50  -9238  42110  -103283   584    2    2     8      8 37 24 27  175  172 
50983.50  -9047  42277  -103863   577    2    2     8      8 37 24 27  227  144 
50984.50  -8872  42429  -104432   560    2    2     8      8 37 22 27  202  113 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 962:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 962 (1998 Jun 14 - Jun 20)
      98  6 14   98  6 15   98  6 16   98  6 17   98  6 18   98  6 19   98  6 20
prn   3d rss (cm)
  1       9          6          9          9          8         13          5   
  2       7          5          5          5         10          6          8   
  3       8          8          9          6          6          8          8   
  4       8          5         10         12         11          9          6   
  5      11         12          7          6          5          4          7   
  6      17         13                    16         10         15         25   
  7      10          9          8          9          8          8         12   
  8      16          5         14         17         10         12         13   
  9       8         10          9          7          5          9         12   
 10       5          7          7          7         10          7         16   
 13       5          5          3          8          7          5          5   
 14       3          6          3         11          8          7         14   
 15       9          9          7          6          3          6          5   
 16       9          6          6         13         16          6          9   
 17       5                               10          8          5          3   
 18      10          9          9         16         13          5          5   
 19      11          9          6          8          6          6         10   
 21       9          6         10         10          7          9          7   
 22       9         13         15         15         10          6          4   
 23       8          8         14          9          5          5          8   
 24       6          6          7          6          5          4         16   
 25       6         11          6         12          5          7         11   
 26       5          6          8          7          6          6          5   
 27      11          7          5          5          5          4          4   
 29       6          7          8          9          7         11          6   
 30      10          7          9          4          6          7          7   
 31       6          6          8          6          6          5          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 962 (1998 Jun 14 - Jun 20)
 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    .225        1.43        63.5        5.03        2.60    
ASC1   6.6    102.       -.137        70.7        5.87        1.45    
AUCK   2.0    83.9       -.946e-01    42.5        5.00        2.64    
BAHR   1.0    .878        129.        43.0        4.00        2.91    
BOGT   2.9    188.       -.151        56.6        5.72        1.68    
COCO   1.0    65.5       -.262e+05    48.0        6.00        2.13    
CRO1   4.0    610.       -.812e-01    52.5        5.00        1.84    
DAV1*  6.9    132.       -.114          .         4.59        1.55    
DGAR   7.0    118.       -.117        63.8        5.94        1.69    
EISL   6.9    .190e+04   -.265        50.1        5.31        2.77    
FAIR*  7.1    .372        .357        45.4        4.88        2.20    
FORT*  6.6    35.4       -.656e-01    63.2        6.00        1.54    
GALA   3.5    101.       -.107        63.0        4.75        1.74    
GODE   3.0    .274       -1.87        49.7        6.33        2.85    
GOL2*  7.0    70.5       -.366        45.3        4.88        2.04    
GRAZ*  1.0    1.32        .612e-01    74.0        4.00        2.33    
GUAM*  5.0    105.       -.590e-01    59.8        7.42        2.39    
HARK*  6.9    7.48       -7.36        51.2        4.00        2.74    
HRAO   7.0    271.       -2.34        31.3        3.61        2.78    
IISC   2.6    103.       -.385e-01    66.3        5.00        2.41    
IRKT*  5.9    1.99       -.366e-01    60.3        4.85        2.51    
KELY   1.0    97.6       -.343          .         5.00        1.95    
KERG*  6.9    717.        797.          .         5.00        2.57    
KIT3*  5.9    162.       -.751e-01    68.6        4.87        2.66    
KOKB*  7.0    .380e+05   -283.        80.1        5.16        2.57    
KSTU   1.0    131.        .182          .         4.00        2.63    
KWJ1*  7.0    587.       -.140        62.0        6.45        1.79    
LHAS*  2.0    110.       -.350          .         5.00        2.25    
MAC1*  6.9    91.8       -.119        38.9        4.00        1.97    
MAD2*  6.7    310.        .135          .         6.30        2.03    
MAG0   5.9    .309e+06    486.        32.0        4.36        2.33    
MALI*  7.0    20.6       -678.        76.9        7.17        2.04    
MAS1*  6.9    2.80       -1.03        53.7        4.14        2.29    
MATE*  3.9    .100        .933        45.3        4.55        2.95    
MCM4   7.0    92.5       -.119        34.0        4.60        1.28    
MDVO   1.9    .446        238.        67.5        7.00        1.93    
MKEA   6.0    .270        .130        55.8        4.85        2.50    
NRC1   3.3    .           .           61.3        5.36        2.91    
NTUS   5.8    .477e+04   -.165        100.        6.08        1.41    
NYA1   4.8    88.8       -.324        45.2        5.00        1.97    
OHIG*  4.8    704.       -.228e-01    58.7        4.42        1.76    
ONSA*  3.9    .332       -1.61        46.5        4.00        2.19    
PETR   1.0    89.0       -.336        79.0        6.00        2.52    
PIE1*  1.0    .102       -.845e-01    49.0        5.00        2.60    
SANT*  6.3    614.        .292e-01    38.7        5.16        1.49    
TID2*  7.0    .245       -.859e-01    35.3        5.15        2.53    
TSKB*  7.0    1.62       -2.36        48.7        5.31        3.04    
USNO   1.1    .           .           52.0        6.00        2.50    
USUD   5.0    .453        2.46        43.8        5.26        2.86    
WTZR*  7.0    .292       -1.10        64.2        4.73        2.59    
YAR1*  5.8    89.0       -.804e-01    36.5        4.54        2.43    
YELL*  6.9    860.       -1.20        48.3        5.03        1.71    
PRN01  7.0    80.2        50.3        56.0        5.31        2.04    
PRN02  7.0    82.6       -499.        56.5        5.00        2.05    
PRN03  7.0    82.7        19.6        54.5        5.15        2.40    
PRN04  7.0    82.2        32.3        54.1        5.00        2.08    
PRN05  7.0    82.2        152.        55.0        4.87        2.10    
PRN06  6.0    81.5       -.318        60.0        5.00        1.84    
PRN07  7.0    81.4        781.        57.2        5.15        2.11    
PRN08  7.0    82.8        527.        53.8        5.00        2.02    
PRN09  7.0    78.9       -46.0        55.0        5.00        2.16    
PRN10  6.6    79.3        23.0        59.8        5.00        1.98    
PRN13  7.0    79.8       -169.        56.3        5.00        2.16    
PRN14  6.7    80.8        31.1        57.7        5.30        2.13    
PRN15  7.0    3.31        567.        56.1        5.16        2.22    
PRN16  6.7    81.4        66.6        55.3        5.30        2.09    
PRN17  5.0    82.6       -182.        57.7        5.00        1.99    
PRN18  7.0    80.9        14.6        56.2        5.16        2.10    
PRN19  7.0    81.0       -3.10        54.9        5.16        2.04    
PRN21  6.8    81.0        44.3        56.3        5.31        2.16    
PRN22  7.0    78.4        1.28        51.3        5.16        2.24    
PRN23  6.8    80.5        .576        58.9        5.73        2.13    
PRN24  7.0    81.3        832.        54.6        5.00        2.00    
PRN25  7.0    78.7       -6.57        51.5        5.00        2.11    
PRN26  7.0    82.1        129.        53.2        5.00        2.19    
PRN27  7.0    80.3        31.8        57.7        5.16        1.96    
PRN29  7.0    82.9        510.        52.3        5.00        2.13    
PRN30  7.0    79.4       -43.5        52.1        5.15        2.07    
PRN31  7.0    80.9        4.45        53.8        5.16        2.31    
_______________________
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  6 14   98  6 15   98  6 16   98  6 17   98  6 18   98  6 19   98  6 20
prn   3d rss (cm)
  1     324        274        399        476        415        232        257   
  2     506        446        493        286        681        902        786   
  3     348        333        260        276        229        361        234   
  4     329        205        200        337        283        338        184   
  5     545        437        450        497        461        438        455   
  6     524        559                   519        788        694        712   
  7     294        286        366        632        709        343        482   
  8     686        689        174        436        550        469        869   
  9     550        340        563        471        264        443        392   
 10     505        493        507        492        461        443        586   
 13     213        207        328        403        258        219        223   
 14    1182        787        556        566        463        264        325   
 15     304        229        221        191        238        233        244   
 16     418        356        443        463        437       1282       1072   
 17     314                              656        504        352        352   
 18     305        324        328        321        328        274        282   
 19     250        294        283        205        245        263        156   
 21     313        206        304        237        296        262        500   
 22     410        433        599        784        486        453        854   
 23     502        334        991        874        538        385        391   
 24     755        413        251        291        246        260        206   
 25     485        456        571        542        754        892        700   
 26     556        457        173        188        383        223        314   
 27     465        413        306        289        266        254        260   
 29     358        179        352        369        210        244        250   
 30     292        334        240        234        225        311        283   
 31     287        244        265        170        226        182        237   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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