FTS Report on DOY 280

I.  The following are clock offsets, in microseconds between the clocks
at each DSN complex and each complex relative to UTC(USNO).  The offset
is a mean of readings using several GPS space vehicles in common view.

                SPC10     SPC40     SPC60     SPC40     SPC60
                MINUS     MINUS     MINUS     MINUS     MINUS
 MJD   DOY      USNO      USNO      USNO      SPC10     SPC10

56562  270      0.165    -0.768     1.041    -0.932     0.879
56563  271      0.162    -0.746     1.057    -0.907     0.898
56564  272      0.167    -0.723     1.069    -0.889     0.905
56565  273      0.171    -0.702     1.082    -0.873     0.912
56566  274      0.176    -0.680     1.093    -0.855     0.920
56567  275      0.177    -0.658     1.108    -0.835     0.933
56568  276      0.182    -0.642     1.118    -0.823     0.938
56569  277      0.183    -0.619     1.129    -0.801     0.949
56570  278      0.190    -0.598     1.142    -0.787     0.955
56571  279      0.198    -0.572     1.158    -0.769     0.962
56572  280      0.197*   -0.553*    1.169*   -0.750*    0.974*
56573  281      0.201*   -0.532*    1.181*   -0.732*    0.983*
Values derived from linear least squares extrapolation or interpolation are indicated by (*) next to the time offset. 

II.  Frequency Offsets from linear least-squares fits on time-offsets over the period from 56562 to 56571
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(USNO)   |    0.426  |    0.034    |   2.642   |
|   SPC40 RELATIVE TO UTC(USNO)   |    2.468  |    0.025    |   1.965   |
|   SPC60 RELATIVE TO UTC(USNO)   |    1.453  |    0.018    |   1.407   |
|   SPC40 RELATIVE TO SPC10       |    2.051  |    0.037    |   2.844   |
|   SPC60 RELATIVE TO SPC10       |    1.024  |    0.038    |   2.983   |
 -----------------------------------------------------------------------

III.
Comments: SPC 40 GPS receiver A failed on DOY 256 (MJD 56548) /1138 UCT. SPC 40 data since DOY 257 (MJD 56549) come from GPS receiver B.

NOTES: All DSN data are from the new multichannel receivers.
SPC 10 and SPC 60 offsets are commonviewed with USNO and with each other.
SPC 40 offsets are all-in-viewed with USNO and with SPC 10. 

FTS Contacts: Connie Dang (626)305-6194 :: Linh La (626)305-6184



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