[daip] APCAL issues.

[Chris Flatters]

Craig Walker <cwalker at aoc.nrao.edu> writes:

> At the moment, I am trying with solint=480 (=8hr) on a data set that is
> 16 hours long.  I get three solutions per station and the plots and
> times suggest that the middle one only used a very short segment of
> data.  I tried lengthening the solint and still get 3 solutions.
> I then tried shortening the interval to 300 sec.  From the plots, it
> looks like what is happening is that you get a 300 second solution, then
> a solution with about 2 points in it, then another 300 second solution,
> then another very short one ....  This should be the clue needed to 
> determine the problem.

APCAL was inserting a little solution interval between every pair of SOLINT
long solutions. This should be fixed when the midnight jobs runs.

 
> Does Trec need to be R,L pairs even if you only have one polarization?
> (I have both).  Are the elements of Trec based on antenna table antenna
> number, or on elements in ANTENNAS?  If the former (as I guess from the
> help file) the program cannot be used for more than 15 station
> observations.  That's a pretty bad limitation.

It needs alternating R and L entries but the L entries are just place holders
for single polarization data.


	Chris Flatters
	cflatter at nrao.edu