Help for TIMSCAL2RE

PURPOSE:

   TIMSCAL2RE is a program which calibrates TIMS data to ground radiance.  It
is similar to TIMSCAL2, except that it uses an input spectral emissivity
image, rather than a single emissivity spectrum, and that the only output
option is ground radiance.  The input is TIMS data which have already been 
calibrated to instrument radiance (in watts/...) with the program TIMSCAL,
plus a six channel emissivity image in the format produced by the TIMS suite
of programs.  The output is a data set of all six bands in two byte integer.

EXECUTION:

   The following is the execution statement format for TIMSCAL2RE:

	TIMSCAL2RE INP=(PIX,EMIS) OUT=CALPIX PARAMS

   where INP, OUT, and PARAMS are parameters discussed in their res-
pective parameter sections. 



OPERATION:

   TIMSCAL2RE takes as input the output dataset of TIMSCAL (IRAD mode, WATTS
units), plus an emissivity image in the format produced by TIMSEMIS or TIMSCAL2.
It uses LOWTRAN7 or MODTRAN (user selectable) to compute the 
atmospheric path radiance, transmittance, and ground reflected atmospheric 
radiance. These values are convolved with the TIMS instrument functions and 
the instrument perceived radiances to obtain ground radiance.  The formula 
used to compute ground radiance is:

        IRAD = [GRAD + (1.0-e)*L   ]*Trans + L
                                sky           path

   The units output for radiance images are in milliwatts/m**2/um/sr.
Output is in halfword (two byte signed integer) format. 


WRITTEN BY:  Ron Alley   July, 1995
             (based upon TIMSCAL2, origially written by  J. H. REIMER 1982)

COGNIZANT PROGRAMMER:  Ron Alley

REVISION: 1  1/18/96  rea  - Update to use MODTRAN3

PARAMETERS: