[teqc] dumb clock questions

Lou Estey lou at unavco.org
Mon Aug 29 12:38:03 MDT 2005


Andrew,

We'll have to ask Jeff F.  In fact, Jeff will have to tell us why
clockprep fixes this situation.

--lou

> Lou--
> 
> I had sort of ruled out hardware since different receivers gave
> essentially identical results, but I guess there could have been something
> wrong with both setups.
> 
> Clockprep seems to fix the files.  I don't have any experience/expertise
> with it, but some of the output is below.  It seemed curious that all the
> offsets in range are close to, but not exactly 1 msec.  Do you know if
> this is normal?
> 
> [minera at pc81639 bdzg_issue]$ /goa/bin/Linux86/clockprep -i BDZG2230.05o -o
> bdzg2230.05o_cp
>   $Id: clockprep.f,v 3.16 2003/08/29 22:11:56 bai Exp $
>   Processing file BDZG2230.05o
>   Station name from RINEX header is BOUN
>   Testing file to determine how it was RINEXed
>   Have read record  7; time  5 8 11 20 57 30
>   Offset in range (msec):  0.981165555
>   Offset in phase (msec): -0.0188342586
>   Break in range but not phase
>   Have read record  58; time  5 8 11 21 10 15
>   Offset in range (msec):  0.985036078
>   Offset in phase (msec): -0.0149649448
>   Break in range but not phase
>   Have read record  111; time  5 8 11 21 23 30
>   Offset in range (msec):  0.982878444
>   Offset in phase (msec): -0.0171217501
>   Break in range but not phase
>   Have read record  164; time  5 8 11 21 36 45
>   Offset in range (msec):  0.974539691
>   Offset in phase (msec): -0.0254601811
>   Break in range but not phase
> ...
> etc, etc.
> 
> 
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