FTS Report on DOY 182

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

56464  172     -0.235     0.305    -0.852     0.540    -0.613
56465  173     -0.216     0.295    -0.830     0.511    -0.610
56466  174     -0.194     0.285    -0.804     0.480    -0.607
56467  175     -0.175     0.162@   -0.780     0.337@   -0.601
56468  176     -0.154     0.148    -0.754     0.302    -0.597
56469  177     -0.131     0.134    -0.729     0.266    -0.596
56470  178     -0.108     0.127    -0.703     0.235    -0.590
56471  179     -0.091     0.115    -0.681     0.208    -0.583
56472  180     -0.070     0.114    -0.652     0.183    -0.581
56473  181     -0.050     0.099    -0.629     0.149    -0.576
56474  182     -0.028*    0.093*   -0.604*    0.123*   -0.572*
56475  183     -0.007*    0.084*   -0.579*    0.095*   -0.568*
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 56464 to 56473
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(USNO)   |    2.404  |    0.019    |   1.487   |
|   SPC40 RELATIVE TO UTC(USNO)   |   -0.961& |    0.037&   |   2.881&  |
|   SPC60 RELATIVE TO UTC(USNO)   |    2.897  |    0.016    |   1.263   |
|   SPC40 RELATIVE TO SPC10       |   -3.289& |    0.028&   |   2.166&  |
|   SPC60 RELATIVE TO SPC10       |    0.487  |    0.017    |   1.313   |
 -----------------------------------------------------------------------

III.
Comments: 
@ On DOY 175/0100 UTC, SPC 40 cable maintenance may have caused the Master Clocks to experience a time drift of about 100 nanoseconds.
& SPC 40 frequency offset was calculated from MJD 56468 thru 56473.

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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