Level 2 Help for PHODEM

INP

File name of the input image (dummy)


OUT

File name for the output image(dummy)


PHO_FUNC

Photometric function :

This parameter selects the menu point for input the photometry task:
   1. to run the program without using a photometric function, you have 
      to select "NONE"'
   2. to read in the photometric function and its associated parameters
      from a photometric parameter file, you have to select "PAR_FILE" and
   3. to put in the parameter by yourself from the tutor mode, 
      you have to select the desired photometric function.

When returning to the highest level of the menu (i.e. the MDF-file) you will
see that the third selection point has been changed according to your input of
PHO_FUNC in this menu.


GECALDIR

Directories with geom. Calib. files

Default Logicals/Environments :

M94GEOCAL -   Directory with two complete sets of 
	      9 geometric calibration files
	      for HRSC and WAOSS 


GECALDAT

Creation date of the geometric calibration files

Default Logicals/Environments :
	HRSC_GEOCAL_DATE
	WAOSS_GEOCAL_DATE


BSPFILE

Trajectories data, SP-kernels

Default Logicals/Environments :
	HWSPICE_BSP


SUNFILE

Ephemeris data of the Sun and planets

Default Logicals/Environments :
	HWSPICE_SUN


BCFILE

Attitude data, C-kernels

Default Logicals/Environments :
	HWSPICE_BC


TSCFILE

Clock, SCLK-kernels

Default Logicals/Environments :
	HWSPICE_TSC


TIFILE

Instrument data, I-kernel

Default Logicals/Environments :
	HWSPICE_TI


TPCFILE

Planetary constants, PC-kernels

Default Logicals/Environments :
	HWSPICE_TPC


TLSFILE

Leapseconds, LS-kernel


PHO_PAR_FILE

This is a (dummy) name of a IBIS2-file containing parameters for 
some photometric functions.


ALBEDO

Albedo -  valid for the Lambert and Minnaert photometric functions.


EXPONENT

Exponent - the geometrical constant k of the Minnaert photometric function.


A_VEVERKA

Parameter of the Veverka, Squyres-Veverka and Mosher photometric functions.


B_VEVERKA

Parameter of the Veverka, Mosher, Squyres-Veverka and Buratti 
photometric functions.


C_VEVERKA

Parameter of the Veverka, Mosher, Squyres-Veverka and Buratti 
photometric functions.


D_VEVERKA

Parameter of the Veverka, Mosher, Squyres-Veverka and Buratti 
photometric functions.


E_BURATTI

Buratti's parameter for modification of the Veverka photometric function.


MO_EXP1

Modification of the coefficient k in the Minnaert part 
of Mosher's photometric function (goes along with MO_EXP2).


MO_EXP2

Modification of the coefficient k in the Minnaert part 
of Mosher's photometric function (goes along with MO_EXP1).


DEN_SOIL

Specific volume density of the soil.


W_SOIL

Single-scattering albedo of the soil particles. It characterizes the 
efficiency of an average particle to scatter and absorb light. 
One of the classical Hapke parameter.


HG1_SOIL

Parameter of the first term of the Henyey-Greenstein soil particle 
phase function.


HG2_SOIL

Parameter of the second term of the Henyey-Greenstein soil particle 
phase function.


HG_ASY_SOIL

Asymmetry parameter (weight of the two terms 
in the Henyey-Greenstein soil phase function).


LE1_SOIL

Parameter of the first term of the Legendre-Polynomial soil particle 
phase function.


LE2_SOIL

Parameter of the second term of the Legendre-Polynomial soil particle 
phase function.


H_SHOE

One of the classical Hapke parameter.
Parameter which characterizes the soil structure in the terms of porosity, 
particle-size distribution, and rate of compaction with depth (angular width 
of opposition surge due to shadowing). 


B_SHOE

One of the classical Hapke parameter. 
Opposition magnitude coefficient. The total amplitude of the opposition surge 
due to shadowing. It is the ratio of the light scattered from near the 
illuminated surface of the particle to the total amount of light scattered at 
zero phase : 
B_SHOE=S(0)/(W_SOIL*p(0))
with p(0) - soil phase function
S(0) - opposition surge amplitude term which characterizes the contribution of 
light scattered from near the front surface of individual particles at zero 
phase.
For a true, shadow-hiding opposition effect, 0<=B_SHOE<=1.
However, there are several other phenomena that may also cause a surge in 
brightness at small phase angles. These including the following:
1) The coherent backscatter or weak photon localisation due to multiply 
   scattered light.
2) An single-particle opposition effect caused by complex porous agglomerates 
   ( soil phase function )
3) Glory caused by sperical particles ( soil phase function )
4) Internal reflections of transparent particles ( soil phase function )
   These various phenomena may be large enough to increase the opposition surge 
   by more than a factor of 2. This possibility may be taken into account by 
   allowing B_SHOE to be greater than 1.
 


H_CBOE

Parameter of the coherent backscattering ( angular width of the opposition 
surge due to multiply scattered light).
H_CBOE=lambda/(2*pi*L)
lambda - wavelength
L - the free path of the phonon in the medium


B_CBOE

Opposition magnitude coefficient of the coherent backscattering 
(height of opposition surge due to multiply scattered light). 


THETA

Average topographic slope angle of surface roughness at subresolution scale.
One of the classical Hapke parameter. 


COOK

 Parameter of the Cook's modification of the old Hapke function.


TAU_ATM

Optical depth of the atmosphere.


W_ATM

Single scattering albedo of the atmospheric aerosols.


HG1_ATM

Parameter of the first term of the Henyey-Greenstein atmospheric phase function.


IRV_EXP1

Parameter of the Irvine photometric function.


IRV_EXP2

Parameter of the Irvine photometric function.


INC_ANG

Incidence angle in degree.


EM_ANG

Emission angle in degree.


PHAS_ANG

Phase angle in degree.


SAVE_PAR

This is the name for the TAE-parameter file containing all parameters 
needed to running the program. The default name is PHODEM.PAR.
A user-specified name can be given to that file. This is similar to the
SAVE command in the Tutor Mode.