FTS Report on DOY 184

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

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     -0.031     0.087    -0.607     0.118    -0.573
56475  183     -0.013     0.075    -0.582     0.089    -0.567
56476  184      0.011*    0.068*   -0.556*    0.059*   -0.563*
56477  185      0.031*    0.058*   -0.531*    0.029*   -0.559*
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 56466 to 56475
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(USNO)   |    2.359  |    0.025    |   1.955   |
|   SPC40 RELATIVE TO UTC(USNO)   |   -1.139& |    0.039&   |   3.064&  |
|   SPC60 RELATIVE TO UTC(USNO)   |    2.870  |    0.020    |   1.581   |
|   SPC40 RELATIVE TO SPC10       |   -3.460& |    0.036&   |   2.780&  |
|   SPC60 RELATIVE TO SPC10       |    0.499  |    0.017    |   1.291   |
 -----------------------------------------------------------------------

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 offsets 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



                                  Page 1