Subject: [IGSREPORT-3658] Wk 0900 JPL Analysis Report
From: D C Jefferson
Date: Mon, 21 Apr 1997 11:47:05 PDT

******************************************************************************
IGS Electronic Report    Mon Apr 21 11:47:05 PDT 1997      Message Number 3658
******************************************************************************

Author: D C Jefferson
Subject: Wk 0900 JPL Analysis Report

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 0900 (DAYS 96-102, DATES 1997 Apr 06 - Apr 12)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb

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/0900.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09007.sum         This text file.
jpl09007.erp         Earth rotation parameters for GPS week 900.
jpl09007.snx         Ground station coordinates for GPS week 900, SINEX format.
jpl0900[0-6].sp3     GPS ephemerides for GPS week 900, sp3 format.
jpl0900[0-6].tro     Ground station troposphere estimates for GPS week 900.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 20.0 cm

According to IGS Mail No. 1566, the receiver at PAMA (Pamatai, Tahiti) was
moved to a new location and renamed TAHI.  Although data from the new station
were used in last week's (899) analyses, statistics reported for the site after
day 090 in our Analysis Center weekly report and SINEX file (jpl08897.sum,
jpl08997.snx) were incorrectly labeled "PAMA".  The SINEX file has been
corrected, and resubmitted to the CDDIS and the IGSCB.  As usual, TAHI is given 
the opportunity to participate in the orbit and clock solution as the global
site distribution varies.  The following nominal coordinates were assumed for
weeks 899 and 900 only:

                                 X (m)          Y (m)          Z (m)
TAHI (Papeete, Tahiti):     -5245195.2928  -3080472.2325  -1912825.4175

According to the file nanu1997.mes obtained from the IGS CBIS, PRN06 was
unusable on day 097 for maintenance/repositioning.  Data from this satellite
did not meet our initial convergence criteria on this nor the previous day
(096), and have been excluded from the analyses of both days.

Data from PRN28 has not been available since week 878 (see nanu1996.mes).
Beginning this week, data from this satellite is included in our analyses
again.  However, data volume was sufficiently low, and mismodeling was such
that its solution is not included in our sp3 products for the week, nor is it
present in our engineering data summary table.

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: PIE1 (not ALGO) used as reference clock days 096-098.
WARNING: FAIR (not ALGO) used as reference clock days 099-100.
WARNING: Data from PRN06 excluded days 096 an 097 due to a maneuver.
WARNING: Data from BAHR, BOGT, CAS1, HART, HRAO, IISC, KERG, KIT3, MALI, MCM4,           TAHI, YAR1 excluded day 096.
WARNING: Data from ONSA excluded day 098.
WARNING: Data from HOPB, HRAO, MDVO, ONSA, TIDB excluded day 099.
WARNING: Data from HOPB, USNA, WTZR excluded day 100.
WARNING: Data from BOR1, HOPB, KELY, SNI1, USNA, WTZR excluded day 101.
WARNING: Data from CAS1, SANT, USNA, WTZR excluded day 102.

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 900 (1997 Apr 06 - Apr 12)
     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
50544.50 -18599  34957  -302448  2480    5    6    10     10 37  9 24   46  353 
50545.50 -18515  35344  -304891  2407    3    4     9      9 37 11 25   72  366 
50546.50 -18395  35695  -307318  2446    3    3     9      9 37 10 25   90  329 
50547.50 -18270  36027  -309760  2438    3    3     9      9 37 11 25   73  419 
50548.50 -18167  36441  -312208  2459    3    3     9      9 37 10 25  110  400 
50549.50 -18032  36806  -314696  2516    3    4     9      9 37 10 26  134  398 
50550.50 -17938  37239  -317197  2487    3    4     9      9 36  9 26  134  424 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 900:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 900 (1997 Apr 06 - Apr 12)
      97  4  6   97  4  7   97  4  8   97  4  9   97  4 10   97  4 11   97  4 12
prn   3d rss (cm)
  1      36         35         12         27         28         31         33   
  2      18         19         15         22         12         14         18   
  3      36         61         62         30         33         39         35   
  4      25         18         21         27         20         29         34   
  5      15         24         19         20         23         26         33   
  6                            23         32         35         21         15   
  7      11         10         20         21         14         29         31   
  9      22         21         16         14         24         31         51   
 10      15         17         31         25         31         32         21   
 14      24          6         14         10         20          7         10   
 15      22         20         10         14         22         24         17   
 16      13         11         15         14         13         20         20   
 17      16         12         29         20         13         14         17   
 18      12         13         12         14         14         11         11   
 19      24         25         12         10         16         13          8   
 21      44         36         18         27         32         37         26   
 22      23         19         14         10         26         20         19   
 23      43         34         27         28         40         42         26   
 24      12         10         34         26         32         28         22   
 25      18         11         12          9         11          8         13   
 26      21         24         22         35         21         22         21   
 27      16         20         12         17         17         20         18   
 28                                                           2349       1301   
 29      18         17         11         12         18         12          9   
 30      12         17         14         25         24         25         31   
 31      26         31         19         28         32         11         18   
_______________________
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 900 (1997 Apr 06 - Apr 12)
 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    95.5        .760e-01    42.4        5.03        2.46    
ANKR   2.7    .180e+04   -.739e-01    55.5        4.81        1.65    
ASC1   6.8    .218e+04   -.165        82.9        5.57        1.40    
AUCK   5.0    79.9       -.145        41.8        8.03        2.83    
BAHR   6.0    .438        263.        43.9        4.91        2.86    
BOGT   5.9    123.       -.144        61.8        7.13        1.67    
BRAZ   2.9    137.       -.148        65.4        6.85        2.19    
BRMU   1.0    122.       -.183        38.0        5.00        3.62    
BRUS   5.0    .274        3.34        60.2        4.24        2.19    
CAS1   1.9    7.40        .135e+04    38.9        7.14        1.71    
CASA   3.0    9.77        74.1        38.0        4.69        3.04    
CHAT   2.0    104.       -.204        80.3        6.13        2.02    
COCO   4.7    148.       -.165e+04    41.9        8.69        2.65    
CRO1   1.0    146.       -.194        49.0        6.00        2.39    
DAV1   4.9    30.9        .216e+04    33.3        5.45        1.35    
DGAR   6.8    .250e+04   -.198        63.9        6.33        1.68    
FAIR*  7.0    181.        .593        34.6        4.86        2.14    
FLIN   3.0    88.7       -.756e-01    47.1        4.79        2.48    
FORT   4.9    .146       -.712        51.6        8.23        3.08    
GODE   1.0    .223       -.105        44.0        4.00        2.77    
GOL2*  7.0    31.2       -.101        51.6        5.12        2.83    
GUAM   7.0    122.       -.163        66.1        7.02        2.29    
HART*  6.0    35.2        15.8        45.8        5.83        2.29    
HOB2   3.9    .477        1.65        46.4        5.49        2.49    
IISC   5.9    91.1       -.157        73.6        5.66        2.18    
IRKT   7.0    .242        .533        60.6        5.00        2.69    
KELY   1.0    252.       -.301          .         5.00        1.60    
KERG   2.0    135.        113.          .         6.00        2.43    
KIRU   2.0    7.55       -.583        48.5        6.00        1.91    
KOKB*  6.8    99.8       -.241        81.6        6.70        1.86    
KOSG*  5.8    8.75       -17.4        40.8        3.86        2.53    
KOUR   3.0    2.52        4.31          .         8.63        1.62    
KWJ1   6.9    314.       -.164        74.7        7.37        1.51    
LHAS   4.5    .162e+05   -1.03        62.7        6.20        2.13    
MADR*  6.0    191.        2.86          .         6.00        2.16    
MALI   6.0    31.2       -634.          .         9.77        1.90    
MAS1   7.0    144.        .431        42.6        4.64        2.12    
MCM4   5.8    97.2       -.155        37.1        6.15        1.72    
MDVO   2.8    .306        302.        70.5        5.71        2.68    
MKEA   4.0    .112       -.167        50.3        6.38        2.19    
NOTO    .9    .559e-01    12.5        37.0        4.00        2.86    
NRC1   1.0    .838e-01   -.198        57.0        5.00        1.32    
NYAL   1.6    .750       -.149          .         5.00        .786    
PERT   6.9    2.21       -12.3        55.0        5.88        2.82    
PIE1   2.3    .           .           39.4        4.47        1.95    
RCM6   6.0    88.7       -.188        63.4        5.46        2.26    
REYK   5.0    78.7       -.145        55.0        6.20        1.60    
SANT*  5.1    .135e+04   -.550        38.6        6.09        1.20    
SHAO   2.0    94.5       -.917e-01    49.0        4.77        1.76    
STJO   2.0    179.        .523        36.1        5.12        2.40    
TAHI   5.8    172.       -.154        82.9        12.1        1.81    
TIDB   3.0    .225        1.00          .         6.00        2.74    
USUD   5.0    3.17        2.40        41.6        5.25        2.98    
WTZR*  4.0    3.66        .370        59.6        4.00        1.05    
WUHN   4.8    308.       -107.        46.8        5.42        2.60    
YAR1*  6.0    2.52       -.139          .         5.70        2.33    
YELL*  7.0    33.1       -.102        41.4        5.26        1.49    
PRN01  7.0    79.6        16.9        56.4        6.35        2.07    
PRN02  7.0    81.4       -352.        58.0        6.11        2.08    
PRN03  7.0    79.7        2.38        57.8        6.00        2.09    
PRN04  7.0    80.9        21.7        53.0        6.48        2.19    
PRN05  7.0    81.1        91.1        53.3        6.04        2.23    
PRN06  5.0    79.9        4.26        54.2        6.79        1.87    
PRN07  7.0    81.7        742.        54.0        6.33        2.13    
PRN09  6.8    83.1       -34.1        56.9        6.25        1.90    
PRN10  7.0    79.0        6.19        53.6        6.27        2.08    
PRN14  7.0    80.5        18.0        54.4        5.71        1.97    
PRN15  7.0    2.98        412.        57.4        5.87        1.98    
PRN16  7.0    77.8        7.11        54.9        5.64        2.09    
PRN17  7.0    82.3       -145.        58.2        5.74        1.85    
PRN18  7.0    81.0        25.1        51.9        6.40        2.11    
PRN19  6.6    81.2        240.        57.8        6.00        2.06    
PRN21  7.0    81.8        45.0        59.3        6.03        2.16    
PRN22  7.0    84.5        382.        51.9        6.00        2.04    
PRN23  7.0    80.5        11.4        56.0        6.03        2.05    
PRN24  7.0    78.5        323.        55.9        6.46        2.07    
PRN25  6.8    80.6       -5.36        53.6        6.77        1.65    
PRN26  7.0    84.1       -151.        55.1        6.02        1.94    
PRN27  6.6    82.5        24.4        58.9        7.91        1.91    
PRN29  7.0    82.9        8.65        52.3        5.86        2.03    
PRN30  7.0    83.5       -47.5        51.7        5.88        2.29    
PRN31  7.0    81.1        299.        54.9        5.87        2.08    
_______________________
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  4  6   97  4  7   97  4  8   97  4  9   97  4 10   97  4 11   97  4 12
prn   3d rss (cm)
  1     329        478        282        420        637        323        379   
  2     698        213        379        637        249        433        294   
  3     259        275        270        340        301        233        247   
  4     392        581        444        498        609        262        667   
  5     160        227        196        347        439        336        298   
  6                          2609        416        460        424        490   
  7     173        660        287        367        289        316        402   
  9     187        245        208        242        264        626        634   
 10     380        383        313        183        217        253        466   
 14     250        289       1043        313        616        477        848   
 15     214        309        217        273        203        187        223   
 16     230        268        301        382        598        626        435   
 17     450        293        225        357        310        374        379   
 18     300        780        425        342        847       1579        266   
 19     688        628       1061        311        247        249        268   
 21     329        175        208        243        284        212        185   
 22     442        414        606        472        432        516        335   
 23     472        254        328        171        187        323        594   
 24     256        278        262        202        208        584        468   
 25     182        258        347        306        497        407        248   
 26     339        199        170        191        492        258        268   
 27     394        420        477        280        292        276        569   
 28                745                                        1041        567   
 29     386        407        526        288        359        363        157   
 30     187        531        771        322        386        576        248   
 31     175        218        249        256        275        209        244   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr asc1 auck bahr bogt braz brmu brus cas1 casa chat coco cro1 dav1 dgar fair flin fort gode gol2 guam hart hob2 iisc irkt kely kerg kiru kokb kosg kour kwj1 lhas madr mali mas1 mcm4 mdvo mkea noto nrc1 nyal pama pert pie1 rcm6 reyk sant shao stjo tidb usud wtzr wuhn yar1 yell

[Mailed From: [email-masked]]