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Contents
In the simplest case, the spectra have all the same resolution,
reference channel and reference value: they are aligned and the
channel mode (SET ALIGN CHANNEL) can be used. The intensity
(temperature) 
and weight 
of the output sum 
are
derived from a simple weighted mean of the input spectra:
On return, weight array can vary across the abscissae axis, e.g. in COMPOSITE mode the overlapping channels typically have a
double weight compared to the side channels.
Gildas manager
2014-07-01
![\fbox{
\begin{minipage}[t]{12cm}
\textsf{Averaged channel intensity and weight (...
...R(i) + w_T(i)} \\
w_S(i) & = & w_R(i) + w_T(i)
\end{eqnarray}\end{minipage}}](img35.png)