Subject: [IGSREPORT-3820] Wk 0907 JPL Analysis Report
From: D C Jefferson
Date: Tue, 10 Jun 1997 10:54:05 PDT

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IGS Electronic Report    Tue Jun 10 10:54:05 PDT 1997      Message Number 3820
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Author: D C Jefferson
Subject: Wk 0907 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0907 (DAYS 145-151, DATES 1997 May 25 - May 31)
******************************************************************************

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/0907.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09077.sum         This text file.
jpl09077.erp         Earth rotation parameters for GPS week 907.
jpl09077.snx         Ground station coordinates for GPS week 907, SINEX format.
jpl0907[0-6].sp3     GPS ephemerides for GPS week 907, sp3 format.
jpl0907[0-6].tro     Ground station troposphere estimates for GPS week 907.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

According to IGS Mail Message 1609, the antenna at HART has been repositioned.
We continue to exclude HART from our list of constrained (fiducial) sites in
this week's processing.  Also, although used in our analyses on days 145, 150,
and 151, this site has been removed from our SINEX file for this week.

A clock reset of about 13 microseconds was detected for GPS23 at approximately
15:50 UT on day 147.

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: ONSA (not ALGO) used as reference clock day 145.
WARNING: PIE1 (not ALGO) used as reference clock day 146.
WARNING: Data from NOTO, TROM excluded day 145.
WARNING: Data from SNI1, TROM excluded day 146.
WARNING: Data from KERG, NYAL, TROM excluded day 147.
WARNING: Data from SNI1 excluded day 148.
WARNING: Data from LHAS, STL3 excluded day 151.

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 907 (1997 May 25 - May 31)
     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
50593.50 -10020  49659  -410737  2174    4    3     8      8 37 10 24  280  241 
50594.50  -9792  49876  -412882  2117    3    3     8      8 37 10 24  280  232 
50595.50  -9538  50115  -414999  2117    3    3     8      8 37  9 24  280  227 
50596.50  -9280  50288  -417138  2161    3    3     8      8 37  9 25  271  203 
50597.50  -9046  50492  -419308  2179    3    3     8      8 37 11 25  258  215 
50598.50  -8848  50699  -421483  2170    3    3     8      8 37 10 25  275  195 
50599.50  -8611  50892  -423633  2130    3    3     8      8 37 11 25  298  207 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 907:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 907 (1997 May 25 - May 31)
      97  5 25   97  5 26   97  5 27   97  5 28   97  5 29   97  5 30   97  5 31
prn   3d rss (cm)
  1      15         12         21         17         20         22         12   
  2      10         12          9         14          9         10         16   
  3      18         23         27         23         19         16         19   
  4      10         10         12         12         10         11          9   
  5      35         16         12         12         22         23         26   
  6      14         14         17         10         17         12         15   
  7      23          9         14         11         11         12          7   
  9      16         16          8         19         10         23         17   
 10       8          9         10         12         14         10          6   
 14       8         14         13         16         11         11          8   
 15      15         10         16         17          8          8          6   
 16      15         13         11         12          7         10          7   
 17       8         10         10         10          9          9         14   
 18       6         12         13         10         10          8          8   
 19       5         12          7         10         14          8          6   
 21      14         11         17         18         16         12          8   
 22      11         15         18          8          9          6         12   
 23      21         26         20         26         12         16         16   
 24       9         11          9         14         10         13         22   
 25      11         17         13         13          7         14         12   
 26      14          9          7          8          9          7         12   
 27       8         10          5         11          9          8          8   
 29                                        8         14         10          7   
 30      40         26         15         13         21         19         16   
 31      10         14         12         12         11          5          6   
_______________________
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 907 (1997 May 25 - May 31)
 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    201.        2.82        47.2        4.16        2.81    
ANKR   1.9    144.       -.147        55.0        4.55        2.74    
ASC1   7.0    99.3        .474        68.2        5.91        1.77    
AUCK   4.0    85.6        1.06        42.0        4.27        2.77    
BAHR   7.0    .478        130.        53.0        5.30        3.92    
BOGT   1.9    228.        2.22        59.2        6.50        1.67    
BRAZ   1.9    95.0       -.301        56.5        5.49        2.24    
BRUS   2.9    .253        4.90        60.7        4.77        2.97    
CAS1   6.9    14.6        .268e+04    43.0        5.95        1.84    
CASA   1.0    .229e+06    924.        41.0        6.00        2.72    
CHAT   3.0    110.       -.314        79.7        5.35        2.66    
COCO   6.9    124.       -.179e+04    35.9        6.03        2.78    
CRO1   5.0    236.       -.242        54.1        6.08        2.08    
DGAR   7.0    107.        .475        58.0        6.92        1.84    
FAIR*  7.0    .110        .776        34.9        4.74        2.31    
FORT   4.7    22.5        .580        51.8        6.06        3.16    
GOL2*  7.0    21.0        .724        48.1        5.03        3.04    
GUAM   7.0    145.        .470        88.8        7.18        2.29    
HART*  2.8    17.8        4.17        52.9        5.00        2.90    
HOB2   3.0    86.2        1.47        45.1        5.00        2.63    
IISC   7.0    86.7        .477        70.4        6.05        2.44    
IRKT   6.8    10.2        .415        65.0        5.15        2.90    
KERG   4.9    118.        125.          .         6.03        2.62    
KIT3   3.0    215.        1.35        82.3        5.66        2.00    
KOKB*  6.8    112.        .495        77.7        4.88        1.72    
KOSG*  7.0    8.06       -4.97        43.1        4.00        2.54    
KWJ1   7.0    139.        .480        67.0        7.61        1.77    
LHAS   4.6    .109e+05    1.81        67.8        5.00        2.14    
MAC1   3.9    82.6       -.280        29.5        4.00        2.59    
MAD2   1.0    .594e-01   -1.80        93.0        6.00        2.17    
MADR*  6.8    1.05        .727          .         6.90        2.18    
MALI   7.0    23.4       -426.          .         9.35        2.39    
MAS1   6.0    107.        .787        44.2        4.88        2.32    
MCM4   6.9    90.9        .490        32.4        4.46        2.06    
MDVO   1.0    .443        772.        70.0        6.00        2.77    
MKEA   6.0    .103        .302        48.1        5.53        2.65    
MOIN    .9    113.       -.585e-01    66.0        7.00        1.67    
NLIB   1.0    821.        4.67        45.0        4.00        2.49    
NOTO   1.0    1.54       -1.31        42.0        4.00        2.69    
NRC1   1.0    .759e-01   -.438e-01    54.0        4.00        2.53    
OHIG   6.8    .191e+04    .547        54.7        5.00        1.88    
ONSA   1.0    .           .           38.0        4.00        2.02    
PERT   7.0    .233e+04   -8.21        58.3        6.13        2.65    
PIE1   1.0    .           .           53.0        5.00        2.62    
RCM6   1.0    97.8       -.806e-01    67.0        7.00        2.69    
REYK   5.0    81.9       -.236        58.5        6.40        2.08    
SANT*  6.8    462.        .910        40.1        5.57        2.10    
TAHI   4.3    416.       -.146        81.1        7.68        2.30    
THU1   7.0    73.1        .480        44.1        5.59        2.62    
TID2*  2.7    .955e-01   -3.65        35.5        5.00        2.66    
TSKB   1.0    .986       -.250        46.0        5.00        3.38    
USUD   6.0    42.2        1.01        37.3        4.87        2.88    
WTZR*  3.9    561.        .659        60.2        4.25        2.42    
WUHN   3.0    .814e+05   -.135e+04    51.8        6.00        2.68    
YAR1*  7.0    2.87       -5.78          .         4.91        2.44    
YELL*  7.0    101.        .186        45.4        4.73        1.55    
PRN01  7.0    81.3        21.0        53.5        5.87        2.12    
PRN02  6.6    81.7       -367.        58.8        5.73        2.33    
PRN03  7.0    80.9        18.2        54.0        6.00        2.46    
PRN04  6.6    80.8        29.9        53.1        5.74        2.10    
PRN05  6.7    82.0        98.5        58.2        5.31        2.40    
PRN06  7.0    82.6        .464        54.0        6.00        2.64    
PRN07  7.0    81.0        747.        56.3        5.73        2.08    
PRN09  6.9    84.9       -39.0        53.8        5.60        2.33    
PRN10  7.0    80.3        8.90        56.3        5.60        2.37    
PRN14  7.0    82.5        19.5        55.3        5.59        2.36    
PRN15  6.7    3.61        430.        55.8        5.73        2.30    
PRN16  7.0    81.4        13.9        56.8        5.31        2.38    
PRN17  6.8    81.0       -149.        54.5        5.45        2.41    
PRN18  7.0    80.6        .996        49.7        5.60        2.40    
PRN19  7.0    82.5        204.        51.5        5.45        2.18    
PRN21  7.0    81.0        57.0        58.3        5.74        2.39    
PRN22  6.8    79.5        395.        53.3        5.31        2.35    
PRN23  6.9    .116e+04    6.38        54.5        6.00        2.22    
PRN24  6.6    79.9        514.        54.0        6.17        2.24    
PRN25  7.0    80.9       -4.87        51.1        5.87        2.19    
PRN26  7.0    81.9       -179.        54.4        5.59        2.46    
PRN27  7.0    78.8        30.5        51.9        5.45        2.52    
PRN29  4.0    71.9        24.6        55.5        5.52        2.53    
PRN30  6.7    81.2       -57.5        55.9        5.74        2.29    
PRN31  7.0    80.6        387.        55.5        5.30        2.27    
_______________________
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  5 25   97  5 26   97  5 27   97  5 28   97  5 29   97  5 30   97  5 31
prn   3d rss (cm)
  1     316        422        222        215        231        244        258   
  2     645        795       1606        561        426        475        572   
  3     485        468        244        235        384        388        231   
  4     757        804        699        779        784        500        942   
  5     337        567        353        272        223        199        344   
  6     538        487        644        486        342        417        396   
  7     434        406        243        229        421        439        244   
  9     246        206        279        261        211        223        532   
 10     413        251        337        411        422        535        356   
 14     569       1834       1281        332        324        459        622   
 15     705        294        241        279        339        392        252   
 16     302        237        243        254        452        368        902   
 17     369        287        341        559        357        448        484   
 18     429        312        364        961        972        384        670   
 19    1018       3216        186        338        487        763        501   
 21     415        454        292        167        183        420        470   
 22     427        648        560        465        344        621        420   
 23     685        912        521        560        465        672        485   
 24     235        280        290        733        401        333        221   
 25     229        398        585        306        268        336        404   
 26     143        185        210        209        499        260        346   
 27     571        468        372        268        380        257        360   
 29                                      218        603        774        498   
 30    1114        492        700        569        556        603        417   
 31     429        358        517        418        404        217        242   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr asc1 auck bahr bogt braz brus cas1 casa chat coco cro1 dgar fair fort gol2 guam hart hob2 iisc irkt kerg kit3 kokb kosg kwj1 lhas mac1 mad2 madr mali mas1 mcm4 mdvo mkea moin nlib noto nrc1 ohig onsa pert pie1 rcm6 reyk sant tahi thu1 tid2 tskb usud wtzr wuhn yar1 yell

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