Bernese GPS Software Version 5.0 - Bernese GNSS Software

14.3 Clock RINEX Utility in Bernese GPS Software
Figure 14.7: Program input panel for clock jump detection in program CCRNXC.
If the reference clock shall be chosen in the CCRNXC program run (e.g., from one of
the station clocks – the recommended procedure) all reference clock candidates have to
remain in the processing, see options “DEFINE A LIST OF CLOCKS TO BE PROCESSED”
in panel “CCRNXC 2: Clock/Epoch Selection for Processing”.
Reference Clock Selection in CCRNXC
A list of potential reference clocks has to be selected in option “REFERENCE CLOCK SELEC-
TION” in panel “CCRNXC 5: Select a New Reference Clock for Output File”. Successively each of
these clocks is used as reference clock and the complete clock solution is aligned to this
reference clock candidate. The polynomial degree for the alignment is specified in option
“Polynomial degree for alignment” in panel “CCRNXC 5: Select a New Reference Clock for Output
File”. All clocks are then fitted by a polynomial of the same degree and the mean RMS is
computed. That reference clock candidate is selected as the reference which leads to the
smallest mean fit RMS and at the same time is available for a maximum number of epochs
(optimally for all epochs).
14.3.5 Clock Jump Detection
A jump in a clock is a discontinuity in the clock value time series which may not be modeled
by a continuous function. In order to distinguish between the noise behavior of a clock and
a clock jump the size of the jump must be significantly bigger than the mean change of
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