FTS Report on DOY 357

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

57369  347     -0.286     0.877     0.700     1.164     0.988
57370  348     -0.304     0.885     0.706     1.189     1.011
57371  349     -0.325     0.895     0.714     1.219     1.040
57372  350     -0.345     0.908     0.722     1.252     1.067
57373  351     -0.363#    0.916     0.728     1.278#    1.091#
57374  352      0.078     0.925     0.735     0.847     0.657 
57375  353      0.058     0.935     0.740     0.877     0.682
57376  354      0.033     0.939     0.744     0.906     0.711
57377  355      0.016     0.945     0.753     0.929     0.738
57378  356     -0.009     0.956     0.757     0.965     0.768
57379  357     -0.030*    0.966*    0.765*    0.992*    0.794*
57380  358     -0.052*    0.975*    0.771*    1.020*    0.822*
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 57369 to 57378
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(USNO)   |   -2.515  |    0.047    |   1.632   |
|   SPC40 RELATIVE TO UTC(USNO)   |    1.008  |    0.078    |   2.695   |
|   SPC60 RELATIVE TO UTC(USNO)   |    0.742  |    0.041    |   1.416   |
|   SPC40 RELATIVE TO SPC10       |    3.347  |    0.077    |   2.671   |
|   SPC60 RELATIVE TO SPC10       |    3.212  |    0.032    |   1.103   |
 -----------------------------------------------------------------------

III.
Comments: # An un-expected power outage at SPC 10 on DOY 351 (MJD 57373) necessitated the GPS receivers to be restarted. There was a time offset of about 42 nanoseconds. SPC10 frequency offsets were calculated from DOY 352.

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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