[Difx-users] How to do a clock-search?

Eskil Varenius eskil.varenius at chalmers.se
Fri Nov 27 07:49:55 EST 2020


Dear DiFX users,

I find myself wanting to explore a huge (1 second) space of possible 
clock offsets. Testing with spectral resolution 0.01 works fine, but 
only covers roughly +-50us. Trying the next power of 10, DiFX 2.6.2 runs 
but difx2mark4 fails, reporting

"fatal error: # visibilities (32000) exceeds array dimension (8192)"

Does anyone have a working method for how to clock-search the full 
1-second space?
(Shifting the clock_early values in VEX/v2d by 100us and stepping 
through using 0.01 resolution should work, but there must be a more 
elegant way?)

Kind regards

Eskil



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