#DEFINITIONS:  -*-sh-*-

# ARTS setup file for fast ICI simulations
# 
# Basic setup (observation geometry, channel definitions) is a copy
# of ici.arts.
#
# This is a version with a reduced frequency grid (only 1-2
# frequencies per channel).
# The frequencies have been derived with atmlab's simulated annealing
# functionality from the Garand data set (42 atmospheric cases).
# Optimization was run by Antonin Verlet-Banide on 140609 for channel
# accuracies of ?K.
#
# Accuracy for the different channels:
# Channel RMS_err[K]  Max_err[K]
#    01   0.0036
#    02   0.0546
#    03   0.0897
#    04   0.0597
#    05   0.0708
#    06   0.0997
#    07   0.00722
#    08   0.0804
#    09   0.0763
#    10   0.0836
#    11   0.0755
#
# 2014-06-09 Jana Mendrok, Antonin Verlet-Banide

Arts2 {

# Observation geometry
# ---

MatrixSetConstant(sensor_pos, 1, 1, 817e3)
MatrixSetConstant(sensor_los, 1, 1, 135)


# Sensor response setup
# ---

# Initialization of sensor parameters
MatrixSet( sensor_description_amsu,
           [ 183.31e9,  7.00e9, 2000e6 ;
             183.31e9,  3.40e9, 1500e6 ;
             183.31e9,  2.00e9, 1500e6 ;
             243.2e9,   2.50e9, 3000e6 ;
             325.15e9,  9.50e9, 3000e6 ;
             325.15e9,  3.50e9, 2400e6 ;
             325.15e9,  1.50e9, 1600e6 ;
      	     448e9,     7.20e9, 3000e6 ;
      	     448e9,     3.00e9, 2000e6 ;
      	     448e9,     1.40e9, 1200e6 ;
      	     664e9,     4.20e9, 5000e6 ] )
sensor_responseSimpleAMSU

# Replace f_grid and sensor_response by optimized ones.
#  Also, sensor_response_f is reset to effective channel frequencies resulting
#  which from the chosen f_grid. this as a safety fix in case yApplyUnit is
#  used, gives largely wrong answers for the default sensor_response_f setting,
#  particularly for bands with large IF.
# (other parameters remain like initialized above).
ReadXML( f_grid, "instruments/ici/ici.f_grid_fast.xml")
ReadXML( sensor_response, "instruments/ici/ici.sensor_response_fast.xml")
ReadXML( sensor_response_f, "instruments/ici/ici.sensor_response_f_fast.xml" )

}