[daip] DTSIM - AIPS

[Leonia Kogan]

Good morning Alessandra,

Actually both you and me discovered that the adding of noise does 
present inside of DTSIM.
So DTSIM may work :) ?? including  the adding the Gaussian noise.
And as I understand you have handled the obvious DTSIM mistake 
(DTSYS*DGAIN instead of
DTSYS/DGAIN) using reciprocal of DGAIN as input:

"I actually simulated the data putting in DTSIM control file 1/DPFU instead

of DPFU (as it is written in the help file) and then checked that the 
fluctuations in flux produced were about the amount expected for that 
given Tsys, DPFU, bandwidth and AP. 
The two values agrees well if I use 1/DPFU. "

QUESTION:   DPFU is DGAIN, is not it?

Therefore DTSIM works at your hand. 

At this situation I would not like to change UVCON adding the D-term simulation.
The UVCON concept is too far from the DTSIM


Leonia





I consider simulation of the D-term at UVCON as a last option
Alessandra Bertarini wrote:
> Hello Eric,
>
> thank you for the reply.
>
> Leonia was mentioning a task he wrote (UVCON). Since DTSIM is not 
> mantained, would then, be possible to have D-term simulation incorporated 
> in UVCON?
>
> Many thanks.
>
> Regards,
> Alessandra
>
>   
>> DTSIM was an attempt, by someone who is no longer with NRAO and who left the
>> AIPS group not long after his work on DTSIM, to produce a complex data
>> simulator.  It was never finished or debugged so far as I know.  I suspect
>> that you will find it frustrating and difficult to make it work properly.  Of
>> course, you are welcome to try - but other examples of this person's coding
>> have proven beyond even my ability to debug.
>>
>> Eric Greisen
>>
>>
>>