Dimap 1.1.3 SPOTView Profile
<PHYSICAL_GAIN>Dimap_Generic 1.0

Raster to physical measure gain for the spectral band being described

Description :

This record provides the gain to apply to the data radiometric count in order to convert it to a real physical measure such as Illumination or height :

L = X/A + B

where:

  • L is the resulting physical value expressed in PHYSICAL_UNIT
  • X is the radiometric value at a given pixel location as stored in the raster file (unitless).
  • A is the gain (PHYSICAL_GAIN)
  • B is the bias (PHYSICAL_BIAS)
 
Example :
 
<Spectral_Band_Info>
   <BAND_INDEX>2</BAND_INDEX>
   <BAND_DESCRIPTION>XS2</BAND_DESCRIPTION>
</Spectral_Band_Info>

or

<Spectral_Band_Info>
   <BAND_INDEX>1</BAND_INDEX>
   <BAND_DESCRIPTION>XS1</BAND_DESCRIPTION>
   <PHYSICAL_UNIT>W.M-2.ST-1.uM-1</PHYSICAL_UNIT>
   <PHYSICAL_GAIN>0.708</PHYSICAL_GAIN>
   <PHYSICAL_BIAS>0.0</PHYSICAL_BIAS>
</Spectral_Band_Info>

or

<Spectral_Band_Info>
   <BAND_INDEX>1</BAND_INDEX>
   <BAND_DESCRIPTION>Elevation</BAND_DESCRIPTION>
   <PHYSICAL_UNIT>M</PHYSICAL_UNIT>
   <PHYSICAL_GAIN>10</PHYSICAL_GAIN>
   <PHYSICAL_BIAS>-10000</PHYSICAL_BIAS>
</Spectral_Band_Info>

or

<Spectral_Band_Info>
   <BAND_INDEX>1</BAND_INDEX>
   <BAND_DESCRIPTION>Magnetic intensity</BAND_DESCRIPTION>
   <PHYSICAL_UNIT>uTesla</PHYSICAL_UNIT>
   <PHYSICAL_GAIN>1.0</PHYSICAL_GAIN>
   <PHYSICAL_BIAS>0.0</PHYSICAL_BIAS>
</Spectral_Band_Info>

Datatype : t_PHYSICAL_GAIN (based on Real)

Real (based on xsd:double)

Possible parent(s)