[daip] Re: Request for help on CLCOR (fwd)

[Mark Reid]

Leonia,

On Tue, 3 Dec 2002, Leonia Kogan wrote:

> 
> Mark,
> 
> The following is the description of the test:
> 
> 1. VPLOT of the data (phase) with DOCALIB =-1 (no correction)
> 
> 2. SPLAT the data with DOCALIB=1 GAINUSE=4;
>    CL=4 was created by CLCOR, opcode 'atmo' The vertical delay column 
>    at the input file is positive.
>    So the SPLAT's output data simulate observation with 'shifted'
>    atmosphere.
> 
> 3. CLCOR to correct the virgin CL table (CL=2 = copy of CL1) of the 
>    SPLAT's output data.
>    opcode 'atmo'; 
>    The vertical delay column at the input file is negative
> 
> 4. VPLOT of the SPLAT's output data.
>    DOCALIB=1; GAINUSE=2;
>    The plots are coincide (as expected) with the VPLOT's plots 
>    of the origin data (DOCALIB=-1) (item #1)
> 
> This test proves the correct correction/application of the CL table
> created by CLCOR opcode 'ATMO'


     Unless I misunderstand your description of the test, it looks 
like you essentially use CLCOR to add in some atmospheric delay and
then subtract it out.   How does this test the sign convention for
the delays?

Mark