Subject: [IGSREPORT-7174] Wk 1060 JPL Analysis Report
From: David C Jefferson <[email-masked]>
To: [email-masked], [email-masked]
Date: Tue, 16 May 2000 09:56:16 -0700 (PDT)

******************************************************************************
IGS Electronic Report   16 May 09:56:17 PDT 2000      Message Number 7174
******************************************************************************

Author: D C Jefferson

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 1060 (DAYS 121-127, DATES 2000 Apr 30 - May 06)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

D C Jefferson, Y E Bar-Sever, M B Heflin, 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/1060.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl10607.sum         This text file.
jpl10607.erp         Earth rotation parameters for GPS week 1060.
jpl10607.snx         Ground station coordinates for GPS week 1060, SINEX format.
jpl1060[0-6].sp3     GPS ephemerides for GPS week 1060, sp3 format.
jpl1060[0-6].tro     Ground station troposphere estimates for GPS week 1060.
jpl1060[0-6].clk     GPS and ground station clocks for GPS week 1060, RINEX.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

GPS SYSTEM UPDATE
-----------------
According to a United States Press Release included in IGS Mail Message 2816,
Selective Availabilty (SA) was disabled at midnight on day 122 (May 1, 2000).  
The RMS clock noise of GPS clock solutions in our engineering data summary
has  dramatically decreased.  Values this week are around 45 ns because they
include a mixture of SA-on/SA-off days; we expect these will be on the order
of 1-5 ns beginning next week (1061), which is completely SA-free.

GENERAL
-------
We continue to exclude data from IGS stations that do not employ Dorne-Margolin
style antennae (see IGS Report #6260).

A large clock discontinuity (reset) of about 109 microseconds was detected
for PRN03 at approximately 17:20 on day 124.

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: ALGO (not USNO) used as reference clock days 122-125.
WARNING: Data from PRN15 and PRN18 excluded the entire GPS week 1060.
WARNING: Data from PRN23, PRN27, PRN29, PRN30 excluded day 121.
WARNING: Data from PRN17 excluded day 123.
WARNING: Data from PRN02, PRN11, PRN17, PRN24 excluded day 124.
WARNING: Data from PRN02, PRN10, PRN25 excluded day 126.
WARNING: Data from PRN02, PRN22 excluded day 127.
WARNING: Data from AMMN, GLSV, GOL2, HNPT, KOUR, MAD2, NANO, TID2, WTZT                  excluded day 121.
WARNING: Data from AMMN, GOL2, HNPT, MAD2, NANO, TID2, WTZT excluded day 122.
WARNING: Data from AMMN, DGAR, GLSV, GOL2, KELY, MAD2, TID2, WTZT excluded day           123.
WARNING: Data from GOL2, HARV, MAD2, TID2 excluded day 124.
WARNING: Data from CIT1, GOL2, MAD2, TID2 excluded day 125.
WARNING: Data from AMC2, GOL2, MAD2, TID2 excluded day 126.
WARNING: Data from GOL2, MAD2, TID2, WTZT excluded day 127.

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 1060 (2000 Apr 30 - May 06)
version 2           
     MJD   XPole   Ypole  UT1R-UTC   LODR Xsg Ysg UTsg LOsg Nr Nf Nt   Xrt   Yrt
         10**-6" 10**-6"      .1us .1us/d 10**-6" .1us .1us/d          10**-6"/d
51664.50   88814  337675   2253705  10710  41  47  191  191 42  0 21   621  -630
51665.50   89388  337295   2242847  11006  30  34  161  161 42  0 25   291  -716
51666.50   89966  336938   2231810  11067  34  38  166  166 42  0 24   290  -305
51667.50   90031  336540   2220675  11204  35  40  193  193 42  0 21   -63  -477
51668.50   89863  335736   2209338  11470  30  35  155  155 42  0 25  -647 -1316
51669.50   89354  334287   2198079  11048  35  42  178  178 42  0 22  -365  -538
51670.50   89014  333419   2187001  11107  34  41  171  171 42  0 23  -404  -423
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 1060:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE               GPS week 1060 (2000 Apr 30 - May 06)
      00  4 30   00  5  1   00  5  2   00  5  3   00  5  4   00  5  5   00  5  6
prn   3d rss (cm)
  1       8          5          9         14          9          9          5   
  2      28         24         34                                               
  3       5          5          4          8         12         11          5   
  4       9         13          8         10          9         13         12   
  5       8         12          6         10         16         16         15   
  6      16         10         10         10         24         19         14   
  7      15         13          9          8         11         14         10   
  8       6         11          6          6          7         13         11   
  9       6          9          9         24         19         11          8   
 10      10          8          6         14         12                     8   
 11      12          8          4                     8         14         17   
 13       7         14          5         11         10         12          9   
 16      10          9         10         11          7         12          6   
 17       7          8                               28         18          7   
 19       6          6         11         15          8         14         19   
 21      10          9          8          8         11         11          8   
 22       9          9          6         10         14         11              
 23                  8         11         10          7         16         12   
 24      10         12          7                    10         10          6   
 25       6          6          7         16         16                    14   
 26       6         11          7         17         13         13          9   
 27                 12          6          7          8         13         10   
 29                 10          9         12         12         11          8   
 30                  9         15         23         16         12          8   
 31       7          6          8         15         16         10          5   
_______________________
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 1060 (2000 Apr 30 - May 06)
 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*  6.7    .105       -2.99        39.1        5.37        3.20    
AOA1   1.0    22.8        .544e-02    73.0        5.00        2.67    
AREQ*  4.9    .236e+05    85.4        28.9        5.43        3.57    
ARTU   3.9    72.7       -.764e-01    35.2        4.80        2.71    
ASC1   6.8    113.       -.136e-01    86.9        6.91        2.53    
BAHR   6.9    .547        449.        34.7        4.74        2.98    
CAS1*  1.0    10.9       -.171e-02    28.0        4.00        .947    
CHAT*  6.0    68.7       -.986e-03    90.6        5.37        3.01    
CIC1   3.8    103.       -.289e-01    65.4        4.68        2.76    
CRO1   6.0    .140       -.419        40.6        6.24        2.91    
DAEJ   2.0    3.29        681.        65.0        5.56        2.78    
DAV1*  5.5    33.1       -.500e-02    53.1        3.77        .845    
DGAR   5.0    .650e+06    252.        33.3        6.85        3.44    
EISL   3.9    36.6       -.690e-02    79.6        5.49        2.71    
FAIR*  6.9    .761        .159        28.3        5.32        1.84    
FORT*  5.9    96.0       -.170e-01    95.1        7.09        1.67    
GALA   6.9    62.3       -.116        32.5        5.45        4.02    
GUAM*  6.8    64.1       -.150        45.2        7.98        3.35    
HARK*  7.0    8.08        310.        65.5        5.30        3.31    
HOB2*  3.0    .151       -16.2        39.3        5.00        3.15    
HOLB   1.0    59.4        353.        38.0        5.00        3.47    
HRAO   3.0    1.46        297.        76.8        4.70        3.35    
IRKT*  5.9    .172       -.402        70.5        5.00        2.80    
JAB1   6.9    .114e+06   -3.78        60.1        5.49        3.18    
JAMA   1.0    30.0       -.838e-01    57.0        7.00        3.41    
JPLM   1.0    15.3        229.        53.0        4.00        3.02    
KELY   4.9    60.1        .119e-02    67.3        6.00        1.33    
KERG*  7.0    1.69        12.9        48.6        5.61        3.10    
KOKB*  6.9    .203       -2.48        42.3        5.97        3.41    
KOUR*  2.9    59.8       -.102        43.8        7.38        4.50    
MAC1*  6.5    55.3       -.102        33.5        4.62        1.96    
MAG0    .8    23.0       -.605e-01    44.0        5.00        2.47    
MALI   6.1    .335e+05   -213.          .         8.27        1.36    
MAS1*  6.9    2.29       -.316        29.5        5.48        3.82    
MCM4*  1.9    .244e+05    134.        55.5        5.00        .957    
MDO1*  1.0    19.9       -4.81        64.0        6.00        2.70    
NKLG   7.0    .289e+06    503.        76.1        7.85        1.73    
NOTO   1.0    .678e-01    93.0        68.0        6.00        3.14    
NOUM   6.9    .285e+06    474.        80.2        5.47        1.92    
NTUS   6.7    150.       -.106e-01    69.2        7.46        2.09    
NYA1   5.8    .122       -.243        33.2        4.47        1.45    
OHIG*  6.7    .670e+06    25.0        47.9        4.83        2.47    
ONSA*  6.9    20.3       -.513e-01    43.5        4.92        2.50    
PETP   3.0    88.0       -.941e-01    42.1        6.11        3.01    
POL2   5.0    78.1       -.121e-01    65.5        4.71        2.74    
RIOG   1.0    55.7       -.938e-01    16.0        4.00        2.16    
SANT*  6.7    39.3        .122        29.0        5.16        2.51    
SELE   2.0    58.5        .116e-01    65.8        4.00        2.74    
STJO   5.0    2.79        .401        43.9        5.16        3.10    
SYOG   1.0    .291e+06    494.        43.0        6.00        1.70    
THTI   7.0    .289e+06    498.        72.8        6.20        2.85    
TID1   3.8    .110       -.351        29.8        5.54        3.01    
TIXI   2.9    89.9       -.880e-01    43.1        4.00        1.77    
TOUL   1.0    .464       -.547        71.0        5.00        2.90    
TRAB   2.0    .372e+05   -.859        49.5        6.07        2.14    
TSKB*  6.9    1.81        .698        67.0        4.09        3.04    
USNO   2.6    .           .           45.7        5.67        3.60    
USUD   2.0    .612       -.458        62.4        4.55        2.48    
WTZR*  6.9    1.57        1.75        55.3        5.19        2.93    
WUHN   4.9    46.4       -.143e-01    80.6        5.64        2.72    
YAR1*  6.8    522.        .500        66.1        3.64        2.02    
YELL*  7.0    109.        .389        43.5        4.53        1.46    
ZECK   2.0    64.1       -.414e-02    72.5        5.00        2.31    
PRN01  7.0    46.5        127.        54.0        5.31        2.37    
PRN02  3.4    59.3       -209.        52.5        6.52        2.22    
PRN03  6.9    .991e+04    64.2        54.2        5.16        2.56    
PRN04  7.0    46.3        783.        58.5        6.07        2.17    
PRN05  6.6    44.6        248.        57.1        5.60        2.32    
PRN06  7.0    47.0        1.76        53.4        5.62        2.48    
PRN07  7.0    44.9        159.        58.6        6.20        2.52    
PRN08  7.0    44.6        703.        54.8        5.16        2.15    
PRN09  7.0    45.2       -42.8        61.1        5.82        2.43    
PRN10  6.0    49.2        50.5        56.9        5.55        2.32    
PRN11  6.0    48.1        324.        62.0        5.18        2.45    
PRN13  7.0    47.2       -717.        56.6        5.45        2.31    
PRN16  7.0    45.1        195.        57.5        5.31        2.15    
PRN17  5.0    50.3       -254.        55.8        5.93        2.66    
PRN19  7.0    47.0        165.        55.4        5.15        2.59    
PRN21  7.0    46.7        7.93        55.0        5.16        2.50    
PRN22  5.8    49.9        333.        55.2        5.72        2.44    
PRN23  6.0    37.9        9.78        58.7        6.18        2.60    
PRN24  6.0    50.2        714.        56.7        5.87        2.44    
PRN25  6.0    49.6        5.42        54.3        5.18        2.57    
PRN26  7.0    46.1        395.        53.3        5.49        2.26    
PRN27  6.0    35.8        18.1        55.0        5.00        2.17    
PRN29  6.0    36.1        591.        54.3        5.71        2.64    
PRN30  5.8    37.6       -19.6        56.9        5.55        2.36    
PRN31  7.0    46.9        1.85        52.2        5.66        2.40    
_______________________
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
      00  4 30   00  5  1   00  5  2   00  5  3   00  5  4   00  5  5   00  5  6
prn   3d rss (cm)
  1     447        563        471        332        507        330        427   
  2     633        696        669                   822                         
  3     197        189        415        522        434        554        270   
  4     270        248        261        727        543        556        320   
  5     521        390        529        928        350        586        539   
  6     528        502        478        473        446        424        427   
  7     292        232        548        386        370        330        262   
  8     353        352        319        393        271        258        178   
  9     246        272        253        198        228        562        555   
 10     432        308        224        450        204                   364   
 11     336        246        323                   310        222        243   
 13     277        433        404        376        258        389        528   
 16     455        507        327        616        486        489        539   
 17     256        434                              444        586        495   
 19     289        481        331        462        418        282        480   
 21     242        251        341        210        338        640        458   
 22     297        454        331        480        323        465              
 23                488        379        490        607        523        195   
 24     479        882        564                   332        488        445   
 25     526        537        268        473        410                   493   
 26     469        293        194        242        248        250        215   
 27                535        407        482        573        483        419   
 29                362        330        298        403        394        597   
 30                285        551        832        382        538        758   
 31     462        429        358        280        220        222        367   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo aoa1 areq artu asc1 bahr cas1 chat cic1 cro1 daej dav1 dgar eisl fair fort gala guam hark hob2 holb hrao irkt jab1 jama jplm kely kerg kokb kour mac1 mag0 mali mas1 mcm4 mdo1 nklg noto noum ntus nya1 ohig onsa petp pol2 riog sant sele stjo syog thti tid1 tixi toul trab tskb usno usud wtzr wuhn yar1 yell zeck