Overview: This directory contains codes that interface between COSP and
the instrument simulators.

Subdirectories hold the core of each simulator, as listed below. The interface
between COSP and each simulator is in this directory.   

Subdirectories:
actsim/:          LIDAR simulator source code
icarus/:          ISCCP simulator source code
MISR_simulator/:  MISR simulator source code
MODIS_simulator/: MODIS simulator source code
parasol/:         PARASOL simulator source code
quickbeam/:       RADAR simulator source code
rttov/:           RTTOV simulator interface (RTTOV source is NOT distributed with COSP!)